Who is AEC Stack for?

Anyone ready to start or run their own construction business. Tradespeople, project managers, engineers, entrepreneurs — if you have industry experience and want to be your own boss, this is built for you. No knowledge of incorporation, licensing, or compliance required.

What kind of business can I start with AEC Stack?

General contracting, subcontracting, specialty trades like electrical, plumbing, HVAC, roofing, concrete, framing, demolition, landscaping, and more. Engineering firms, project management consultancies, construction technology companies. If it's in the built environment, you can build it here. Every business type has its own licensing, insurance, and registration requirements built in.

What's included in AEC Stack?

Everything you need to go from idea to first bid and beyond. Incorporation, CRA registration (HST, payroll, corporate tax), WSIB, trade licensing, insurance, safety compliance, banking, accounting, payroll, and bid readiness. Then keep going with CRM, pipeline management, quoting, invoicing, compliance tracking, and project matching. Your whole operation, end to end.

I already have a business. Can I still use AEC Stack?

Yes. Upload your existing documents — incorporation papers, insurance certificates, licenses, registrations — and get a complete picture of where you stand. See what's in place, what's missing, and close the gaps. Your business gets fully onboarded with a complete operational profile.

Where is AEC Stack available?

Ontario, Canada right now. Every regulation, license, and registration requirement is built deep for the province. Expanding across Canada — each new market gets the same depth of regulatory knowledge.

How is AEC Stack different from hiring a lawyer and accountant?

A lawyer helps you incorporate. An accountant files your taxes. Neither one gets you licensed, insured, compliant, bidding on work, and managing a pipeline. With AEC Stack you handle the full picture yourself — incorporation through operations, project matching, and team management — without needing to hire an office manager, compliance tracker, or bookkeeper.

AEC Stack: The Back Office of a Proper Construction Business

Live across Canada. Built deepest for Ontario.

Start. Run. Grow. Your Construction Business.

Incorporation. Operations. Pipeline. Quotes. Invoicing. Contracts. The whole back office, one platform.

You've been building everyone else's dream. It's time to build yours. Your name on the business. Your rules. Your reputation.

How It Works

Pick what kind of company to build: general contracting, electrical, plumbing, HVAC, roofing, concrete, framing, demolition, landscaping, engineering, or any AEC specialty.
Set up your entire company in a few clicks: incorporation, CRA registration, WSIB, trade licensing, insurance, safety compliance, banking, payroll, and bid readiness.
Bid on opportunities matched to you: 446,000+ open opportunities in Ontario right now. Someone is going to win them. Why not you?
Deliver the job: drawings read and measured for you (takeoffs on scanned or vector sets), specs turned into work registers and submittal logs, code and conformance checks against the set, schedules that build themselves with what-if sandboxes, and your crew running the job from the same set, office to field.
Invoice and get paid: invoices, change orders, and holdbacks from the same platform. AEC Stack earns a small percentage of invoices processed through it; there is no subscription.

Your company formed, your operations running, and projects matched to what you do. Takes minutes, not months.

Everything You Need to Go From Idea to First Bid

Incorporation: file your Ontario or federal articles, set up directors, share classes, and corporate structure
CRA Registration: get your Business Number, HST/GST, payroll accounts, corporate income tax
WSIB: register for workers' compensation and set up your rate group
Trade Licensing: ESA/ECRA, TSSA, HCRA/Tarion, Skilled Trades Ontario, municipal business licenses
Insurance: source CGL, builders risk, professional liability, equipment, commercial auto, umbrella policies
Safety Compliance: meet OHSA requirements, Working at Heights, WHMIS, COR certification
Operational Setup: set up banking, accounting, payroll, Construction Act obligations
Bid Readiness: build your prequalification package, bonding capacity, estimating setup, land your first contract
CRM & Pipeline: manage your clients, track deals, send quotes, collect on invoices
Project Delivery: takeoffs from your drawings (scanned or vector), spec-to-work-register extraction, submittal logs, code and conformance checks, CPM schedules with what-if sandboxes, crew management with field photos and notes
Adviser: ask questions, forward bid packages, manage your week from your truck

This Is How Much Opportunity Is Waiting For You

Right now. In Ontario. For people who do exactly what you do.

$262B+ in active projects: the size of the pie you're about to take a slice of
446K+ open opportunities that someone is going to win
100K+ professionals mapped across Ontario's construction industry
11,000+ industry events where your next client is standing
500K+ new leads entering the market every month

The construction market in Ontario alone is worth over $262 billion. There's more work than there are companies to do it. The only thing standing between you and your share is getting started.

Already Have a Business?

Upload your existing documents (incorporation papers, insurance certificates, licenses, registrations) and see exactly where you stand. What's in place, what's missing, what needs renewing. Close the gaps and get your full operation running on one platform.

How-To: Running a Contracting Business in Ontario

49 step-by-step walkthroughs of the outcomes that keep a contracting business alive: finding work, pricing jobs, invoicing, getting paid, holdback, and the paperwork in between. Each guide is downloadable as a complete kit.

Where work is starting: A live feed of Ontario employers who just pulled a building permit or won a contract, filtered to your trade. A permit is earlier than a job ad: read the signal like an estimator, track it in one click, and get a weekly heads-up by email.
Find open Ontario tenders: Public tenders are scattered across MERX, Biddingo, Bids and Tenders and dozens of buyer portals, each with its own login. Get the live Ontario ones in one list: search the thing you build, read a record in a minute, and track a bid onto your pipeline board in one click.
Start your business in Ontario: The eight setup stages in order, from incorporation through CRA, WSIB and licensing to bid ready: walk the three-step wizard to a live name check and an all-in filing price with government fees included, free and with no account, nothing filed until you authorize and pay.
How much to charge: Price one real job end to end: every cost on its own line, markup you set on purpose, Ontario HST applied for you, holdback split into what you bill now and what waits, and one list of every quote out with its status and value. Demo business, no signup.
Invoice and get paid on time: Build the invoice straight from an accepted quote, with HST at 13 percent and the 10 percent Construction Act holdback computed for you. Send it with a timestamped record, log partial cheques, and put every held-back dollar on a countdown.
Get your 10% holdback back: Take the 10% off every invoice automatically, on the pre-tax value, so your client sees what is payable now. Record each release date once, and every held dollar lands in one tracker that turns red the day you are allowed to collect it.
Sole prop or incorporate: Three paths priced on one screen: $100 for an Ontario sole proprietorship, $400 for an Ontario corporation, $300 federal, with the government filing fees inside each number. Fill the whole registration in, right to the review screen, before any account is needed.
Get WSIB sorted: WSIB is the paper a site asks for before it asks anything else. See where it sits in your setup, what the clearance certificate costs before you meet the bill, and where the account number lives so you can answer the next general contractor who asks in under a minute.
We file it for you: One checkbox hands over the Articles of Incorporation and the four CRA program accounts. See the exact wording you authorize, which steps stay yours, what the all-in price covers, and the one panel every number lands in afterwards.
Hear about work early: Transmission lines, environmental filings, rezonings and agency capital plans are projects announcing themselves years ahead. Get them filtered to your trade and region, grouped by how far in front of the bid each one sits.
What an hour costs you: The wage is roughly half what a worker costs. Add the employer side, the truck, the tools and the insurance, divide it across the hours you can actually invoice, and get a floor under your rate before the quote goes out.
Change orders that get paid: The extra was agreed in a hallway and refused three months later. Raise it in a minute, send it to the client from your own business, and let them approve it where they read it, so the yes has a time stamp on it.
Surviving net 60: Materials and payroll go out weeks before the money comes in. Bill against a schedule of values as the work happens, see what is outstanding against what is genuinely late, and keep the holdback out of the number you think you have.
When a client will not pay: Five steps in the order that costs least: check whether they ever opened it, send the reminder from your business, read the statutory dates, put it in writing, then pick the remedy that matches the amount.
Prompt payment clocks: Ontario gives the payer 28 days to pay a proper invoice and 14 to dispute it, and gives you 7 to pay your own subs once you are paid. Put in one date and every deadline it sets is counted, with the section it comes from.
Construction liens in Ontario: Sixty days to preserve, ninety more to perfect, and the clock starts on your last day on site rather than on your invoice. Get your date first, then decide whether a lien is the right instrument at all.
Receipts out of the shoebox: Filing a $47 receipt costs more attention than the $47 is worth on the day, so it waits until January. Photograph it in the parking lot, check what was read off it, and claim the HST you paid instead of losing it.
Did I make money this month: The bank balance is a mix of last month's invoices, next month's HST and a deposit on a job that has not started. Read the month, split it by job, and learn the difference between a job losing money and a job you have not invoiced yet.
HST without the surprise: Nobody writes to tell you that you crossed the threshold. Register on time, charge it on the whole invoice, keep the collected money separate, and read your return on the CRA's own line numbers before you sit down with your accountant.
Admin by email: Logging in to answer a one line question costs more than the question is worth, so it waits until night. Your business has an email address: ask it what is outstanding and the answer comes back with your own invoices, jobs and calls in it.
Dealing with Skilled Trades Ontario: Nothing gets Skilled Trades Ontario to answer the phone faster. What you control is knowing your own expiry dates early enough to act, and building a dated paper trail while you wait rather than after you have lost.
Finding a sponsor: Your hours only count if an employer signs you up, and almost nobody advertises the position. Work from the public record of who just pulled a permit in your trade and your city instead of a queue with no front.
Challenging the C of Q: The assessment is a documentation exercise, and what stops people is a work history written in the wrong language. Get the hours, the scope and the people who will confirm them down while you still can.
Provisional C of Q expiring: If you have just opened the notice and your stomach dropped, start here. Book the seat before you study, count backwards from the seat rather than forwards from today, and get your options from STO in writing.
The bid-ready checklist: Incorporating is the starting gun, not the finish line. Ten stages generated for your trade, the next three things to do at the top, and a percentage that moves for the right reasons.
What going out on your own costs: Two numbers decide this and only one gets discussed. The setup fees are hundreds. The gap between doing the work and being paid for it is thousands, and it is the one that closes businesses.
Clearances and certificates: The request always arrives on a Friday for a Monday start. Keep every expiry in one place sorted by what runs out first, renew on the warning rather than the deadline, and let clients see the ones you choose.
The licences your trade needs: There is no single contractor licence in Ontario, which is why every answer online contradicts another. Who regulates what, why your personal certificate is not the company licence, and the order that avoids dead time.
Insurance without the guesswork: Twenty minutes of vocabulary before the call beats shopping three brokers with the wrong question. What each coverage actually does, what additional insured means, and the five questions that find the gap.
Assumptions you can defend: Every argument about a quote is two people remembering a conversation. Two short paragraphs on the quote itself, scope and exclusions, turn that into a comparison of documents.
Every job on one board: Ask a contractor what they are chasing and you get three jobs and a pause. The pause is where a quote sits for five weeks. One board with the money on each column, and a fifteen minute weekly habit.
Charge for the estimate: Somebody wants a boiler sized or a panel schedule laid out, and what they are buying is your judgement. Put the design fee on the quote as its own line, credited against the contract, and make paying it a single tap.
C of Q, then what: Your ticket lets you do the work. Something else entirely lets you sell it. Read the Last Mile guide for your code to the end, find out whether your trade needs a contractor licence, and look around a working business before you file anything.
First public bid: Public work is not harder work, it is work with a filing cabinet attached. See what is actually open with closing dates, then find you already hold a controlled document library with the company profile and prequalification package in it.
Run it from Claude: By year three the estimating has become the job and the billing waits for Saturday. Connect AEC Stack to Claude and the errands around the estimate happen by asking, from the van, with nothing changed until you confirm it.
Going independent, priced: WSIB, CPP at both halves, income tax, HST after $30,000, insurance and plates all arrive together. Add up your real monthly overhead, run it through a six-month cash forecast, and get the number that has to go on top of your rate.
Win rate and your price: A win rate is a score, not a diagnosis. Put the size of what you lose next to the size of what you win, read the reasons you lost, and check what the wins actually made before you come down on price.
When they say no to an extra: You found the condition, somebody nodded, and now the answer is no with the gear already installed. Raise the extra in writing, get a refusal with a reason attached, and answer that reason with a linked revision instead of starting again.
Marketing on schedule: Marketing slides at exactly the wrong moment: you are busiest when the pipeline is full, then it empties and you start from a cold account. A ready-to-post pack every morning, written from your own city, pipeline and won jobs.
Bring your business: You registered something, started charging, got work. Then a builder asked for a certificate you did not have. Drop your documents in, have the numbers read out of them, and land on a compliance checklist with what you already satisfy already ticked.
One place, not five tools: Contractors build their own spreadsheets because every app was missing the thing that makes construction different, and because a monthly bill for something that still needs a workaround is infuriating. Holdback, per-job profit and the T5018, in one place, with no monthly bill.
Team access: What would fix a contractor’s admin is almost never a feature. It is a person: a bookkeeper, an office manager, a partner who already does the invoicing. Three roles, an email address, and an accountant export that means they never need a login at all.
Send your own quote: Most contractors who price well already have a spreadsheet that took years to get right. Software arrives and asks them to abandon it. Upload the file instead, have the lines read out of it, and choose whether the client opens your document or the platform version.
Brand, website, documents: The decision takes a sentence. The admin that follows takes a fortnight: a logo, a colour picked in a hurry, a website that never gets finished, and documents written the night before a builder asks for them. One press produces all three, in one brand.
Know if they read it: An evening on a price, then silence, and no way to tell whether it landed in spam or was read and rejected. Send the proposal as a page instead of an attachment and it reports back: what they read, for how long, and what they skipped.
Get on GC bid lists: There is no register to sign and no form to fill. Work arrives because somebody at a builder has your name in front of them. Find the person, send them something worth keeping, and be able to answer the prequalification package when it comes.
One screen every morning: The worst part of running a contracting business is the twenty minutes before the work, spent reconstructing what happened yesterday. A briefing written each morning from your own invoices, deals and books, ranked so the top card is the one that matters.
Books that stand up: The fear is being asked a question about your own business and not being able to answer it. The way out is records made as the work happens, by the system that raised the invoice, so there is nothing to reconstruct in March.
Try it as a working business: An empty trial account tells you nothing. Pick your trade and land in a business partway through its year: money in play, an invoice fourteen days overdue, change orders on a live job, books that balance.

Last Mile to Certificate of Qualification: Ontario Apprentice Trade Guides

41 operator-level guides for Ontario apprentices closing in on their C of Q exam: exam prep, post-qualification union pathways, and the path to journeyperson status. Written from the apprentice's seat, not from STO's website.

309A Electrician: Closing out hours, booking the C of Q exam, exam prep, exam day, and the ESA / Master Electrician / LEC path that sits on top of the 309A certificate.
309C Electrician (D&R): Residential and rural scope, exam booking and prep, ESA Master Electrician path, the 309C → 309A upgrade route, and going owner-operator.
306A Plumber: Closing out hours, booking the C of Q exam, exam prep, plus the post-cert plumbing layers — municipal Master Plumber licensing, backflow prevention, TSSA gas tickets, and the UA pathway.
307A Steamfitter: C of Q exam prep and booking for the steamfitter trade, plus the regulatory layer — TSSA pressure piping, CWB and ASME welding qualifications, and the UA pathway into industrial mechanical contracting.
308A Sheet Metal Worker: C of Q exam prep and booking for the sheet metal trade, plus the post-cert layers — SMACNA standards, TAB certification, CWB welding, and the SMART union pathway through commercial HVAC and architectural work.
308R Residential Sheet Metal: C of Q exam prep and booking for the residential HVAC sheet metal trade, plus the TSSA gas-ticket pairing, the 308R → 308A upgrade route, and the path to owner-operator residential HVAC contracting.
313A Refrigeration & A/C: C of Q exam prep, the Ozone Depletion Prevention (ODP) card, CSA B52, TSSA jurisdiction over industrial refrigeration, the refrigerant transition (CO2, ammonia, hydrocarbons), and the heat-pump market.
313D Residential A/C: C of Q exam prep for the residential A/C and heat pump trade, plus the ODP card, manufacturer dealer programs, geo-exchange / IGSHPA certification, and the 313D → 313A upgrade route.
427A Sprinkler & Fire Protection: C of Q exam prep, NFPA 13/14/20/24/25, NICET certification ladder, the Ontario Fire Code, the Office of the Fire Marshal, and the path to fire protection contracting.
434A Powerline Technician: C of Q exam prep for utility powerline work, plus the utility employment landscape (Hydro One, LDCs, OPG, private contractors), live-line and helicopter specialty certifications, storm response, and the PWU/IBEW union pathways.
339A Mobile Crane Op 1: C of Q exam prep for mobile crane operation (>16,000 lbs), load charts, rigging, critical lifts, CSA Z150, the Ministry of Labour inspection process, and the IUOE Local 793 / OETIO union pathway that defines the trade.
339B Tower Crane Op: C of Q exam prep for tower crane operation, the operational realities (cab life, signal-only lifts, wind limits), CSA Z248, climbing systems and erection, and the IUOE Local 793 / OETIO pathway that defines the trade.
339C Mobile Crane Op 2: C of Q exam prep for boom truck and picker truck operation (16,000–30,000 lb capacity), the owner-operator independent path, the 339C → 339A upgrade route, CDL pairing, and the IUOE Local 793 / OETIO pathway.
403A General Carpenter: C of Q exam prep for the broadest construction trade — residential framing through commercial formwork through finish work — plus the voluntary-credential value question, mandatory safety tickets, HCRA residential builder path, and the UBC union pathway.
451A Drywall, Acoustic & Lathing: C of Q exam prep for steel-stud framing, drywall installation, acoustic ceilings, exterior sheathing, and fire-rated assemblies — plus manufacturer certifications, the 453A finisher dual-credential path, and CDCO union dispatch.
449A Roofer: C of Q exam prep for low-slope and sloped roofing, plus the manufacturer-certified installer ecosystem (Carlisle, GAF, Soprema, IKO, Firestone, Sika Sarnafil), Toronto Green Roof Bylaw work, solar PV integration, and the Roofers Union pathway.
401A Brick & Stone Mason: C of Q exam prep for brick, stone, CMU, and specialty masonry, plus heritage / restoration market access, hardscape and SRW manufacturer certifications, silica control, and the IUBAC Local 2 union pathway.
244G Concrete Finisher: C of Q exam prep for concrete placement, finishing, decorative, and polished concrete, plus the ACI certification ladder, decorative and polished concrete growth markets, and the OPCMIA Local 598 union pathway.
426A Construction Millwright: C of Q exam prep for industrial machinery installation, plus the 426A vs 433A distinction, CWB welding qualifications, manufacturer training (Atlas Copco, Sandvik, ABB, Siemens), CSA Z460 LOTO, and the UBC Millwrights’ Locals union pathway.
404C Painter (Commercial & Residential): C of Q exam prep for residential, commercial, and institutional painting plus surface prep, MPI Skilled and Master Tradesperson certifications, lead/asbestos protocols, manufacturer training, and the IUPAT DC 46 union pathway.
404D Painter (Industrial): C of Q exam prep for industrial protective coatings — abrasive blasting, two-component epoxies and urethanes, immersion service, fireproofing — plus AMPP / NACE / SSPC certifications, manufacturer approved-applicator programs, and IUPAT industrial division pathway.
452A Reinforcing Rodworker: C of Q exam prep for rebar placement, post-tensioning, and concrete reinforcement, plus the Ironworkers Union pathway, CSA W186 rebar welding, post-tensioning manufacturer certifications, and the Red Seal "Ironworker — Reinforcing" designation.
420A Ironworker (Structural & Ornamental): C of Q exam prep for structural steel erection, precast, mass timber, and ornamental ironwork, plus CWB welding qualifications, the Ironworker (Generalist) combo with 452A, and the Ironworkers Union pathway.
636B HEO Excavator: C of Q exam prep for excavator operation across construction, mining, forestry, demolition, and pipeline work, plus GPS / machine control specialty, owner-operator paths, and the IUOE Local 793 / OETIO pathway.
636A HEO Tractor Loader Backhoe: C of Q exam prep for TLB operation across residential, utility, landscape, and small commercial work, plus the most accessible HEO owner-operator path, year-round snow / construction revenue mix, and the IUOE Local 793 / OETIO pathway.
453A Drywall Finisher & Plasterer: C of Q exam prep for taping, joint compound, plaster, and heritage restoration, plus GA-214 levels of finish, the 451A + 453A small-shop ownership combo, manufacturer certifications, and CDCO / OPCMIA union pathways.
455A EIFS Mechanic: C of Q exam prep for exterior insulation finish systems, plus building science fundamentals, manufacturer approved-applicator programs (Sto, Dryvit, BASF/Senergy, Adex), and the path to commercial EIFS specialty contracting.
448A Floor Covering Installer: C of Q exam prep for carpet, resilient, hardwood, and laminate flooring across residential, commercial, and institutional settings, plus ASTM moisture testing, manufacturer-certified installer programs, NWFA and CFI credentials, and accessible owner-operator paths.
241A Terrazzo, Tile & Marble Setter: C of Q exam prep for ceramic, porcelain, large-format tile, marble, granite, terrazzo, and waterproofed wet-area systems, plus TCNA / TTMAC methods, Schluter / Mapei / Laticrete certified installer programs, NTCA CTI credential, and IUBAC Local 31.
253A Heat and Frost Insulator: C of Q exam prep for mechanical insulation on pipes, ducts, vessels, and equipment plus the asbestos abatement specialty pairing, TIAC and manufacturer certifications, and the HFIAW union pathway into industrial insulation work.
253H Hazardous Materials Worker: C of Q exam prep for asbestos, mould, lead, mercury, PCB, and biological hazard removal — plus Ontario Reg. 278/05 and 490/09 framework, Type 1/2/3 certifications, IICRC AMRT, EACO standards, and the LIUNA / HFIAW union pathway.
244H Restoration Mason: C of Q exam prep for heritage masonry restoration — repointing with lime mortars, stone matching and dressing, Dutchman repairs, conservation principles — plus ACO and Ontario Heritage Trust training, manufacturer specialty programs, and the IUBAC heritage division.
401R Refractory Mason: Apprenticeship completion guide for the industrial refractory trade — STO does not issue a C of Q for 401R. Covers logbook close-out, Apprenticeship Completion Certificate, industrial customer base (steel, cement, glass, petrochemical, power gen), and specialty career path.
428A Construction Boilermaker: C of Q exam prep for boilers, pressure vessels, tanks, and structural plate work in industrial settings, plus ASME Section IX welding qualifications, CSA B51, TSSA pressure equipment, API inspector certifications, and the Boilermakers Local 128 union pathway.
424A Architectural Glass & Metal: C of Q exam prep for storefront, curtain wall, entrance systems, skylights, and specialty glazing — plus Kawneer / EFCO / YKK AP manufacturer certifications, AAMA standards, high-rise specialty, and the IUPAT Glaziers union pathway.
450A Construction Craft Worker: C of Q exam prep for the broad-skill construction labourer trade across residential, ICI, infrastructure, mining, and railway sites — plus specialty certification stacks (asbestos, scaffolding, mobile equipment), and the LIUNA Local pathway.
637C Concrete Pump Operator: C of Q exam prep for boom pumps, line pumps, and placing booms — plus power line proximity rules, ACPA CPO certifications, manufacturer training (Putzmeister, Schwing, Concord, REED), and the most accessible specialty equipment owner-operator path.
296A Native Residential Construction: Apprenticeship completion guide for the First Nations residential construction trade — STO does not issue a C of Q for 296A. Covers logbook close-out, Apprenticeship Completion Certificate, Indigenous trades organizations (AABO, CCAB), Indigenous procurement frameworks, and First Nations housing career path.
244K Precast Concrete Erector: Apprenticeship completion guide for the precast concrete erection specialty trade — STO does not issue a C of Q for 244K. Covers logbook close-out, Apprenticeship Completion Certificate, CPCI / PCI standards, CWB welding pairing, the 420A / 244K relationship, and specialty erection career.
244L Precast Concrete Finisher: Apprenticeship completion guide for the precast finishing specialty trade — under review by STO with no C of Q exam. Covers logbook close-out, the 244L scope, cross-trade certification path to 244G Cement Finisher, and the practical implications of the trade's under-review status.
636C HEO Dozer: Closing out the 636C Heavy Equipment Operator (Dozer) apprenticeship — 2,260 hours, two levels of school, the C of Q exam, OHSA mobile equipment and Mines Regulation content, GPS / machine-control specialty, IUOE Local 793 / OETIO, and the Red Seal endorsement.

Idea to First Bid: Starting a Construction Business in Ontario

11 comprehensive guides covering incorporation, registration, licensing, insurance, compliance, and bid readiness for new construction businesses in Ontario.

Incorporation: Named vs numbered companies, Ontario vs federal incorporation, directors, share structure, and the step-by-step filing process.
CRA Registration: Business Number, HST/GST, payroll deductions, corporate income tax: every CRA account your construction company needs.
WSIB & Provincial: WSIB registration, rate groups, clearance certificates, EHT, and Ontario employer health obligations for construction.
Trade Licensing: Skilled Trades Ontario, ESA/ECRA electrical licensing, TSSA, HCRA/Tarion, and municipal permits for construction trades.
Insurance: CGL, builders risk, professional liability, equipment coverage, and umbrella policies. The full insurance stack for construction.
Safety Compliance: OHSA duties, mandatory training, health & safety program, COR certification, and Ministry of Labour inspections.
Operational Setup: Business banking, construction-specific accounting, payroll setup, trust obligations under the Construction Act, and day-to-day operations.
Bid Readiness: Prequalification packages, bid documents, bonding, estimating, and how construction companies actually get work.
ISO Compliance: ISO 9001, 14001, 45001, implementation roadmaps, and how management systems help you win larger contracts.
Business Email: Google Workspace, Microsoft 365, Zoho Mail, email forwarding — every option compared with step-by-step DNS setup instructions.
Custom Domain: Register your own domain, point DNS to your AEC Stack website, and go from yourcompany.aecstack.com to yourcompany.ca.

How-To: Running a Construction Business in the UK

22 step-by-step walkthroughs of the outcomes a UK contractor is actually judged on: winning work off Contracts Finder and Find a Tender, pricing with CIS and the VAT reverse charge in the number, applications for payment, getting a pay less notice beaten, and getting retention released.

CIS gross payment status: Gross payment status means the main contractor pays your invoice in full instead of holding 20% of the labour. This is the business, turnover and compliance tests with the paragraph of Schedule 11 beside each one, the arithmetic on £180,000 of labour a year, and the 90 days and 30 days that decide what happens if HMRC moves to cancel.
Claim CIS deductions back: A subcontractor paid under deduction hands HMRC 20% of every pound of labour before a single expense is counted. This is both routes to getting it back, sole trader through box 38 of the Self Assessment return and limited company through the Employer Payment Summary month by month, with the arithmetic worked end to end and the filing detail that decides whose record the money lands on.
Become a CIS contractor: The first time you pay someone else for construction work you become a CIS contractor. Register before that payment, verify through HMRC, work the deduction off labour only, issue the statement within 14 days and file the CIS300 by the 19th, including the nil return that came back on 6 April 2026.
VAT reverse charge: The exact wording HMRC accepts on a reverse charge invoice, the six conditions that switch it on, why CIS takes materials out of the deduction while the reverse charge keeps them in, and how to pull your input VAT back a month faster.
Zero-Rated and 5% VAT: UK construction runs four VAT positions at once, and the gap between 20% and 5% on a £60,000 conversion is £9,000 on your customer's price. Tell on sight whether a job is 0%, 5% or 20%, with the Schedule and the paragraph of Notice 708 beside each rate, and know which four documents let you hold it.
MTD for CIS Subcontractors: Your one Self Assessment return becomes four quarterly updates and a final declaration, and the test that catches you is turnover, not profit. Work out which step of the staircase you are on, what each update actually contains, and where your CIS deductions land.
Cost of going self-employed: An itemised 2026 setup bill in pounds, from the £36 CSCS card to the van, plus the month by month cash flow that shows why you need about £10,000 behind you before the first application gets paid.
What an hour costs you: Take a £280 day rate apart: 185 billable days, £15,220 of van, tools and pension, and £30,337 landing at £14.45 an hour. Then see what a priced job does to the same year.
Find UK construction tenders: The UK has four national tender feeds, not one, sitting on top of several hundred buyer-run portals. This is what each system covers, the value band a small firm can actually win in, and the three filters that turn the alerts into something worth opening.
Find work from planning: Your council's weekly planning list names schemes six to eighteen months before anyone tenders them, and it names the agent to ring. Learn to read application types, decision notices and pre-commencement conditions, then spot the section 80 demolition notice, the CIL commencement notice and the building control filing that mean a spade is about to go in.
Approved contractor lists: A main contractor will not read your price until you are through prequalification. This is the real structure behind SSIP, CHAS, the Common Assessment Standard and Constructionline's tiers, which single certificate a firm your size actually needs, what each costs in 2026, and the document pack that satisfies all of them at once.
Social value in a tender: Social value is a published marking scheme, not a CSR essay, and the Cabinet Office's own guide says volumes are not evaluated. Work out what those marks are worth in pounds of price, then write the answer that scores.
Which contract to sign: Pick a named contract for the job in front of you, priced: JCT Home Owner at £40, Minor Works 2024 at £100, Intermediate at £178, or your own written terms. Includes the five clauses that decide whether you get paid, and the 14 day cancellation right that can turn a finished job into an invoice you cannot send.
CDM on a Domestic Job: CDM 2015 applies to every domestic job, and regulation 7 hands the homeowner's client duties to the builder the day work starts, with nothing signed. Which dutyholder you became, the one-page construction phase plan that satisfies it, and the F10, RIDDOR and Fee for Intervention deadlines that follow.
Pay Less Notice Deadlines: Under section 111 of the Construction Act, a payer who serves neither a payment notice nor a pay less notice by the days the Act fixes must pay the notified sum in full on the final date for payment, whatever the work was worth. This guide counts both deadlines end to end from a real application date, shows how your own application becomes the notified sum under section 110B(4), and sets out why the payer has to pay first before it can adjudicate the true value.
Start an Adjudication: The statutory right to refer a construction dispute at any time and get a binding decision in 28 days: crystallising the dispute, the notice of adjudication, the nominating bodies and their fees, the referral, the capped low value route, and enforcement in the TCC.
Getting retention released: Retention is deducted at 5% and comes back in two halves, at practical completion and at the certificate of making good. This is how each release date works, why a subcontractor's clock runs off the main contract, and how to turn a retention application into a notified sum the payer has to pay.
The Retentions Ban: The Commercial Payments Bill proposes to end cash retentions in construction. What clauses 11 to 16 actually say, the three dates they set running, the 50% penalty in section 113E, and how to price and paper a job while retention is still being taken.
Late Payment Interest: Statutory interest at 8% over base and the £40, £70 or £100 fixed sum apply to every late business invoice by force of the Late Payment of Commercial Debts (Interest) Act 1998, whether or not your contract says so. This is the rate, the day the clock starts, the arithmetic on a real £14,800 subcontract valuation, the line to paste onto your invoices, and what the letter before claim, Money Claim Online and the winding-up route each cost.
No Lien, Four Routes Instead: England, Wales, Scotland and Northern Ireland have no construction lien, no mechanics' lien and no holdback trust. This is the four routes that do work, ranked by how fast the money moves: suspension on seven days' notice under section 112, adjudication decided in 28 days under section 108, statutory interest and the fixed sum under the Late Payment of Commercial Debts (Interest) Act 1998, and the court routes with their real fees. Plus the three near-lien devices that exist in English law, a counted date sequence from 31 May 2026, and a decision table matching debt size, age and payer solvency to a route.
Suspending for Non-Payment: Section 112 of the Construction Act lets an unpaid subcontractor stop work on seven days' notice, charge the payer for demobilising and remobilising, and take the lost programme time back. This is the notice, the preconditions in order, and the arithmetic counted from a real date.
When a Homeowner Will Not Pay: A domestic job that goes wrong is the most common non-payment situation a small UK builder faces, and section 106 of the Construction Act specifically excludes them from the statute every article is about. This is what the exclusion takes away, what the Consumer Rights Act 2015 and the Consumer Contracts Regulations 2013 hand you instead, how to build a stage payment ladder that leaves you one stage exposed, and the four recovery routes with their real fees.

Cards and Tickets: Getting Qualified to Work on UK Sites

5 guides to the credentials a UK site actually asks for: which CSCS card fits you, the NVQ route for someone who learned on the job rather than at college, and the scheme registrations that gate a trade, from Gas Safe to Part P to F-Gas.

Which CSCS card: CSCS issues thirteen cards in six colours and the wrong one gets you turned away at the gate. This is every colour with the qualification that unlocks it, the CITB test that goes with it, and two costed routes from no card to on site in five days or twenty-four.
NVQ Without an Apprenticeship: Fifteen years on the tools and no paper. Get the NVQ Level 2 or 3 that unlocks a Blue or Gold card by being assessed on your own jobs: OSAT, EWPA and the portfolio route, what the assessor wants as evidence, and a costed six-month sequence from first phone call to card in hand.
Trained Abroad, UK Card: The Ecctis Industry Skills Statement is the document CSCS actually asks for, not the Statement of Comparability everyone buys first. £435 plus VAT, thirty working days, and a Provisional card that keeps you earning while it runs.
Part P Self-Certification: The three items of domestic electrical work that are notifiable in England, why Wales still counts kitchens and gardens, and what NICEIC or NAPIT registration costs against the building control route. Includes what the EAS assessment actually consists of and what changes on 1 October 2026.
Gas Safe registration: Gas is the one UK trade where working without the ticket is a criminal offence. The ACS certificates, the managed learning route from a standing start, the annual fee, and the five-year clock that decides whether you keep working, costed end to end.

Setting Up: Starting a Construction Business in the UK

5 guides covering Companies House registration, HMRC and the Construction Industry Scheme, VAT, the insurance a main contractor asks to see, CDM duties, and getting onto approved lists.

Set up a UK company: Incorporation is one registration out of six, and the other five sit with HMRC. The whole sequence in order: what Companies House needs, what each HMRC registration is triggered by, what it costs, and the diary dates that follow.
Sole Trader or Limited: Which structure leaves more in your hand at £48,000 and at £120,000 of profit, worked end to end on 2026-27 rates, plus the CIS cash-flow difference that decides it for most one-van subbies.
Register for CIS: An unregistered subcontractor has 30% taken off their labour instead of 20%, and the difference sits with HMRC until the tax return is filed. This is the registration that stops it, the UTR you need first, and how to keep a contractor's verification from putting you back on 30% anyway.
Registering for VAT: Work out the exact month your rolling twelve month turnover tips over £90,000, what to invoice while you wait for the number, and why the reverse charge usually ends the Flat Rate Scheme case for a construction business.
Public and Employers' Liability: Pick a public liability limit you can defend to a main contractor, and know whether the £5m employers' liability the 1969 Act makes compulsory has to cover the labour-only lad on day rate. Every cover a UK contractor meets, with the statute or the JCT clause behind it.

How-To: Running a Contracting Business in Florida

34 walkthroughs of what actually decides whether a Florida contractor gets paid and what they are licensed to take on: the 45-day Notice to Owner and the rest of the chapter 713 lien chain, the 12A-1.051 fork that decides who pays sales tax on your materials, the DWC-250 workers' comp exemption in the order that makes it stick, the CILB and ECLB credentials trade by trade from roofing and air conditioning to the thirteen new specialty categories, prompt payment and retainage on private and public work, the tax calendar behind having no state income tax, and the open Florida jobs posted in Miami-Dade and Orlando this week.

Florida Notice to Owner: Know which of your Florida jobs need a Notice to Owner, what date day 45 lands on for each, and how to serve it so the postmark is the date of service. Miss it and the whole receivable has no lien behind it.
Record the lien by day 90: Run the whole Chapter 713 chain on a live Florida job: 90 days from your own final furnishing to record the Claim of Lien, one year to enforce it, and 60 days once a Notice of Contest is served. Every date is counted from your job facts and cited to the statute.
Florida notice of commencement: Know whether the job in front of you needs a notice of commencement, who records it, and why your first inspection will not happen until a copy reaches the building department. Includes the 90 day void rule and the $5,000 threshold that replaced $2,500.
Sales tax on Florida contracts: Sort any job into the Rule 12A-1.051 fork, write the itemized-before-work-begins clause that keeps the tax on the customer's side, and add your delivery county's surtax with the $5,000 single-item cap. Two tables, one worked $215,000 job, and the DR-15 filing band s.212.11 actually puts you in.
Start a Florida contracting business: Pick LLC or sole proprietor knowing that in Florida construction the entity choice decides whether a workers' comp exemption is available to you at all, file at Sunbiz for the real $125, and get 1 May on a clock before the non-waivable $400 late fee exists.
Florida workers comp exemption: Take the exemption in the order Florida checks it: entity active on Sunbiz, member recorded at 10% ownership, then the $50 DWC-250 filed electronically. Includes the 3-officer cap, the two-year midnight expiry, and the missed annual report that silently kills the certificate.
Get your Florida license: You pick the class, sort your own jobs into the six commercial areas the rule names, pass three tests at 70 percent, and clear the financial rule that half the internet still gets wrong. Then 31 August 2026 goes in a clock with its fourteen CE hours split out.
Florida qualifying agent: Florida licenses people, not companies, so this walks the s.489.119 qualification: the $50 filing, the affidavit sentence you actually swear to, what joint and equal liability reaches, and the 60 day clock that stops an entity contracting when its qualifier leaves.
Florida invoices and releases: Bill Florida draws in USD with the Rule 12A-1.051 tax fork already settled, sign only the two s.713.20 lien releases, and get the final payment affidavit into the owner's hands five days before you would ever file suit.
Miami-Dade and Orlando permits: Filter this week's Miami-Dade County and Orlando building permits to your trade and value band, read a permit line the way an estimator does, and make a call that names the permit number.
Price a Florida job: Price a Florida job off a cost floor that already carries the 6% state tax and the delivery county's 2026 surtax, with the $5,000 single item cap applied and a markup that produces the margin you meant to keep.
The Florida residential contract: Four short blocks decide whether a homeowner's attorney has anything to work with: the s.489.1425 recovery fund statement, the s.713.015 lien law warning, your license number on every offer, and a three business day cancellation rule applied only to the jobs it attaches to.
Storm and insurance roofs: Put the s.489.147 blocks on your signature page and every storm contract you sign stands up. The two different 10-day owner rights, the deductible rules that carry a $10,000 fine or a felony, and one pipeline for a forty-roof month.
Public job bond claims: Public property in Florida carries no lien, so the s.255.05 payment bond is your security. Run the chain: Notice to Contractor inside 45 days of commencing, sworn Notice of Nonpayment inside its window, suit inside the year.
The Florida handyman line: Florida has no handyman license to get. Two tests decide whether a job is yours without one: whether it needs a permit, then whether the aggregate price clears $2,500. Plus the statute that puts painting, flooring and handyman services outside licensing entirely.
Find Florida construction bids: Filter 2,148 live Florida contract awards, tenders and building permits down to your trade and your county in one sitting. Public records, published by the government that issued them, surfaced the week they appear.
Florida electrical license: Electrical is licensed by the ECLB, a different board from the CILB with its own pathways and its own CE. Rule 61G6-5.003 sets alternative routes rather than one number of years, which is why the answer you were given was probably the wrong one for you.
Florida roofing license: The certified roofing contractor license is what makes a storm month worth working: one credential, all 67 counties, and the s.489.147 rules that scare everyone else become the moat around the roofers who read them.
Florida HVAC license: Florida writes air conditioning as Class A, Class B and Class C, and the class you need is decided by the equipment you actually put in. The one most changeout contractors qualify for is not the one they are waiting on.
Client will not pay in Florida: The unpaid Florida invoice has a ladder already built for it: the notice, then the claim of lien or the bond claim, then the sworn affidavit. Most balances clear at rung two, and the ones that do not are the jobs where nobody filed rung one.
Florida pool contractor license: Florida issues commercial, residential and servicing pool contractor licenses as three separate credentials, and the servicing route runs on one supervised year plus a 60-hour course rather than four years of hours.
Florida prompt payment: Florida has charged interest on late construction payment since 1992, on private work and public work alike, and on most jobs the statute is simply never switched on. It runs from a written request you can send this afternoon.
Florida plumbing license: The Construction Industry Licensing Board counts person-hours, not birthdays, which changes the answer to how far away your plumbing contractor license is. What counts, what does not, and the exams at the end of it.
LLC or sole proprietor in Florida: Everywhere else this is a tax question you can leave open. In Florida construction it is a workers compensation question, it is settled the day you file, and one of the two answers cannot be bought back later.
Florida deposit rules: Florida does not stop you taking money up front. Section 489.126 attaches two duties to the deposit once it passes a threshold, and a contractor who runs them on purpose is the one who keeps getting deposits.
Florida contractor tax calendar: No state income tax on what you draw, and in exchange a short list of dates: the DR-15 sales tax return, the RT-6, the tangible personal property return, the local business tax receipt, and the Sunbiz report with the $400 teeth.
Your first Florida public job: A county or school job pays differently, secures differently and taxes differently from private work. What to have ready before you mobilise on your first public job, including the bond notice that has to go in within 45 days.
Florida specialty licenses: Screen enclosures, marine docks, structural masonry, window and door, garage doors, plaster and lath and seven more became state certified categories under HB 1383. What that replaces, and who gets in without sitting the exam.
Florida insurance certificates: The certificate of insurance and the workers compensation position are the two documents that actually get checked, and in Florida they are also a condition of holding the license at all under s.489.115(5).
Florida retainage: The 10 percent retainage clause that half the Florida payment pages still print stopped governing new contracts some time ago. What the cap is now, when it releases, and how to invoice for it instead of waiting.
Florida mold license: A contractor license does not cover mold remediation over ten square feet, however senior it is. In the humidity state that is a line item on a large share of restoration jobs, and it is currently leaving your own jobs.
Get on Florida GC bid lists: A general contractor bid list is a spreadsheet on one estimator machine, and getting added is a four minute clerical act that happens the moment somebody has a complete folder on you. Here is the folder.
Florida bid-ready checklist: The compliance clerk emails on Tuesday for twelve documents and the bid is due Thursday. Four of them take a week to obtain. Assemble the package before you need it and every tender after that is an afternoon of work.
Florida Building Code 9th Edition: Applications accepted before the switchover stay under the 8th Edition for the life of the permit, and applications after it do not. That makes the date you walk into the building department a pricing decision on every job that straddles it.

How-To: Running a Contracting Business in Texas

38 walkthroughs of what a Texas contractor is judged on: which trades the state licenses and which the city does, the monthly notice that traps the owner's money and the lien affidavit deadlines that land on the 15th, prompt payment and the 10 percent retainage, sales tax and the franchise tax, and getting onto a general contractor's bid list.

Texas has no contractor license: Texas does not issue a general contractor license: GC, framing, roofing, painting, concrete, drywall and flooring are state-unregulated on purpose. Only electrical and HVAC (TDLR), plumbing (TSBPE), irrigation (TCEQ) and fire sprinkler (TDI) are gated. The real gates are your city and the certificate of insurance.
Start a Texas construction business: Texas does not license general contractors or tax your income, so the gap between deciding and invoicing is a week of filing. Every stage in order with its cost: the $300 Certificate of Formation, the free sales tax permit, the 15 May franchise report, the comp choice, and what each big city charges to register.
Make the owner hold your money: A Texas sub or supplier who sends one page a month puts the owner on the hook for holding money back against the claim. Commercial notice is due the 15th of the third month after the work, residential the second, and the month worked is a bucket you can miss. Worked 2026 dates inside.
Texas lien dates that do not come back: Texas counts your lien deadline in whole months and lands it on the 15th, so settle your role once and the date falls out. Deadline table for original contractors and subs, commercial and residential, plus the five day copy rule under s.53.055 and the one year you get to sue under s.53.158.
Get paid in 35 days, or stop work: Texas Property Code Chapter 28 gives a private owner 35 days to pay your written payment request, then 1.5 percent a month on what is late. Ten days after one written notice you can suspend work without breaching the contract, and bill demobilization and remobilization before you come back.
Get your Texas retainage back: Texas makes the owner reserve 10 percent under Prop. Code s.53.101, through the job and for 30 days past completion. The retainage written into your own contract is a second claim with its own notice under s.53.057. Two piles, two notices, two clocks, with the dates counted for you.
When a Texas client stops paying: Five moves in order, cheapest first: the Chapter 28 interest line at 1.5 percent a month, the ten day letter that lets you stop work and bill remobilization, the monthly notice that makes the owner hold your money, the lien affidavit, then suit. Homestead jobs run their own path.
Bill the month, get paid in Texas: In Texas the month you did the work is a legal fact: lien notices count from it, so an invoice that blurs March into April costs you a notice. This is what goes on the face of a Texas invoice, from the sales tax election your contract already made to the ten percent shown as held instead of missing.
Stop eating the Texas sales tax: One line in your Texas contract decides who pays the sales tax: lump-sum makes you the consumer of the materials, separated makes you the seller. The table covers new construction, repair and remodel, residential and nonresidential, plus the five percent rule that can tax an entire $800,000 job.
What an hour costs you in Texas: Texas puts four lines on a payroll hour: Social Security, Medicare, FUTA after the state credit, and TWC unemployment on the first $9,000. A $30 hand costs $32.43 before workers comp, which Texas alone makes elective. Includes the billable-hour division and the 1099 crossover.
Price a Texas job: Build the number from five piles of cost, take margin with the divisor rather than the multiplier, and split the contract under Tex. Tax Code s.151.056 so profit sits in the untaxed labor line. Then price the cash gap the 10 percent statutory reserve opens.
The tax bill Texas does not send: No state income tax and no corporate income tax in Texas. Below $2,650,000 of revenue your franchise tax is zero and the only filing is Form 05-102 by 15 May. Miss it and a forfeited LLC loses the right to sue the GC sitting on your money.
Form the LLC: what $300 buys you: Texas does not license general contractors, so the entity is the one line you control. Form 205 costs $300 and takes an afternoon, the franchise tax report is free below $2,650,000, and a single member LLC files the same Schedule C you file today. Side by side, with a straight recommendation.
Workers comp is optional in Texas: Texas is the only state where a private employer can decline workers compensation. Subscribing buys the exclusive remedy under Labor Code s.408.001; going non-subscriber keeps the premium but strips three defences under s.406.033. Decision table, the DWC Form-005 calendar, and the GC clause that usually settles it.
Register in the right Texas city: Texas has no state contractor license, so the permit desk decides. Houston asks a general contractor for nothing and Austin is free, Dallas is $120 a year, Fort Worth is $168.75, and San Antonio wants $150 plus an FBI background check. Five cities, with the fees, the terms and what each one asks you to attach.
Your COI is the Texas license: Texas issues no contractor license, so the certificate of insurance decides whether you get on the job. Get the general liability limits Texas GCs ask for, the additional insured endorsement the certificate alone does not give you, and the state minimums for electrical, HVAC and plumbing under 16 TAC 73.40 and 16 TAC 75.40.
Where work is starting in Texas: Austin, Dallas and San Antonio publish every permit they issue, free and daily, with the scope, the declared valuation and the contractor of record on it. Read one like an estimator: what that job is worth to your trade, and how many weeks after the permit date your call is on time.
Find Texas construction bids: Texas posts public work across the ESBD, TxDOT lettings, school district portals, city and county pages, and university systems, each with its own login. This page maps all of it, then covers the three things that decide whether you can bid: CMBL registration, Chapter 2253 bonding, and free HUB certification.
Get on Texas GC bid lists: Texas issues no GC licence, so the bid list is the gate. Here is what a Texas prequal packet asks for, from the Comptroller certificate of account status to the EMR box a non-subscriber cannot fill, plus which estimator to call and when. Houston and DFW are two different lists.
Texas bid ready checklist: Twelve documents stand between you and a vendor number at a Texas general contractor, and five of them cost nothing. Certificate of Formation, EIN, W-9, certificate of account status, ACORD 25 endorsements, the comp answer, city registration, bonding capacity and HUB, each with who issues it and how long it takes.
Texas electrician license ladder: Texas counts the whole electrical ladder in hours worked: 4,000 for residential wireman on a $20 application, 8,000 for journeyman, 12,000 plus two years held for master. The top rung is the TECL, a business license you can hold in your own name. Every licensed rung renews annually on 4 hours of CE.
Master electrician: own the shop: Texas gates the master license at 12,000 hours, two years holding a journeyman license and one exam, for a $45 fee. The rung matters because a master can be assigned to just one electrical contractor, so every TECL in the state runs through somebody, and it may as well be your own company.
Journeyman electrician in Texas: Texas counts the electrical trade in hours, not semesters: 8,000 of on the job training under a master, with the exam open at 7,000. Plan the test date around the hour count and the card lands the week your hours do. The hours table, the annual 4 hour CE, and how to keep a record no employer can lose.
TECL: contract under your own name: The TECL is the Texas license that sits on the business, not the person: your company must be or employ a master electrician, carry $300k per occurrence under 16 TAC 73.40, and pay about $110 a year. Here is the filing, the startup cost table, and how to price the work so it pays for itself.
Texas plumbing license, rung by rung: Plumbing is the one Texas trade the state licenses on its own board, and the top rung is the right to contract with the public. Here is the full TSBPE ladder: 4,000 hours to tradesman, 8,000 to journeyman, three doors into master at a $25 fee, and the insurance certificate that makes you an RMP.
Become a Texas master plumber: Texas issues no license to a plumbing company. A plumbing business is a master plumber who holds the Responsible Master Plumber designation, so the $25 TSBPE exam application is the form for owning your own shop. Three qualifying routes, the real fees, and what a master on staff is worth.
Journeyman plumber in Texas: Texas journeyman plumber is 8,000 hours under a licensed plumber, 48 hours of board-approved classroom and the exam. The rung underneath it, Tradesman Plumber-Limited at 4,000 hours and 24 classroom hours, is a real licence for one-family and two-family dwellings that plenty of apprentices walk straight past.
RMP: plumb in your own name: Texas issues no plumbing company license. The Responsible Master Plumber designation attaches to you, and the only gate on top of your master license is a $300,000 general liability certificate filed with the board before you work. The filing order, the startup cost and how to price the work are all here.
Texas HVAC license: Class A or B: Texas licenses HVAC through TDLR as a class plus an endorsement, and the pair decides which jobs you can sign. Class B stops at 25 tons and 1.5 million BTU per hour; Class A has no ceiling and carries higher insurance under 16 TAC 75.40. Certify as a technician first and you reach the contractor license a year sooner.
Irrigation license: TCEQ, not TDLR: Landscape irrigation is licensed by TCEQ, not TDLR, and that one wrong search costs people weeks. Three credentials, $111 each, valid three years, with no experience requirement. Texas leaves landscaping unregulated, so a licensed irrigator can sell work the crew next door legally cannot.
Roofing in Texas without a license: Texas issues no roofing license, so you can be quoting re-roofs this month. What actually gates the work is the WPI-8 certificate across 14 first-tier coastal counties, the ASTM D7158 Class H shingle spec, and city registration that runs from free in Austin to $120 a year in Dallas.
Bid your own concrete work in Texas: Texas licenses electricians and plumbers, not concrete. What actually gates your first bid is a folder: city registration, a certificate with completed operations on it, commercial auto, and the comp decision. Plus the yield table, the pour date cash gap and the subgrade change order that concrete crews argue most.
The Texas framing sub they call first: Texas licenses no framers, so you can be on site next week. What the square foot bid has to include, labor-only versus turnkey, a lumber escalation clause a builder will sign, the three-draw schedule, and the 10 percent Tex. Prop. Code s.53.101 already holds for you.
Drywall and painting in Texas: Texas does not license drywall contractors or painters, so the quote decides the money instead of a board. What gates you is the city permit desk, the insurance certificate, the comp election, and the EPA lead rule on pre-1978 homes. Then the finish level table that stops a level 4 price buying level 5 work.
Texas Contractor Taxes: Texas levies no personal or corporate income tax, so a contractor's whole income tax year is federal. The four 2026 estimated dates, self-employment tax at 15.3 percent on 92.35 percent of profit, the safe harbor, the QBI deduction, and $145,000 worked to the check.
Running a 1099 crew in Texas: Texas has no state wage withholding and workers comp is elective, so a crew of subs is the normal shape. The kit that holds it: W-9 before the first check, the COI you actually read, Labor Code s.406.123 and DWC Form-083, and the 1099-NEC at $2,000.
Payment bonds on Texas public jobs: Texas mechanic's liens do not attach to public property, so a school, city or state job is protected by the prime's payment bond under Government Code Chapter 2253. Covers the $25,000 and $50,000 bond thresholds, the 15th-of-the-month notice sequence, day 61 suit rights, and the Miller Act on federal work.
Take the Texas hail work: Texas hail is a repair market with a season, and the state's own rules favor the local crew. The deductible ban in Bus. & Com. Code 27.02, the Chapter 58 deposit exemption for a one-year local address, the three-day cancellation that voids a rival's paperwork, and the labor tax exemption after a declared disaster.

How-To: Running a Contracting Business in California

22 walkthroughs of what decides whether a California contractor gets paid and stays licensed: the 20 day preliminary notice, mechanics lien and stop payment notice deadlines under the Civil Code, conditional and unconditional releases, retention and its release dates, the CSLB licence with its bond and qualifier, and the exams behind it.

Do you need a license: BPC s.7031 bars an unlicensed contractor from suing for the balance and lets the hirer recover everything already paid. Covers the $500 threshold in s.7048, the three exemptions people quote, and the classification trap that catches licensed contractors.
Get your CSLB license: The eight steps from classification to issue: four years of journey-level experience, the $450 application, two closed-book exams, the $25,000 bond, and the gap between an $1,100 sole owner start and $3,100 for a corporation.
CSLB experience requirement: The ten year window under 16 CCR 825 is measured back from the day you file, so waiting costs eligibility. Covers which roles count as journey-level, the three year education cap, who can certify, and the four ways a certification comes back rejected.
CSLB law and trade exams: Law and Business runs about 115 questions, the trade exam about 100, both closed book at PSI. The statute behind every subject, from the 20 day preliminary notice to the 45 day retention release, plus a $46,000 swing on one kitchen.
Contractor bond and qualifier: A surety pays your claimant, then collects the $25,000 back from you under the indemnity agreement. Covers the $100,000 LLC worker bond, the s.7071.9 qualifier bond, the 32 hour employment test, and the 90 days to replace a qualifier who leaves.
CSLB license renewal: Active renewal is biennial at $450 for a sole owner and $700 otherwise, with no continuing education. The risk is continuity: a comp lapse, a bond off file or a departed qualifier suspends the license, and BPC s.7141 ends it after five years.
Start a construction business: Ten steps in the order that stops one blocking the next, from classification to the first insurance certificate. The $450 application and $200 issue fee, the $25,000 bond, the CDTFA seller's permit, the city certificate, and twelve months of real dates.
Sole owner or LLC: The $800 minimum franchise tax, the LLC gross receipts fee from $900 to $11,790, CSLB fees of $200 against $350 to issue and $450 against $700 to renew, and the extra $100,000 worker bond, costed across two years of a $620,000 business.
Franchise tax and LLC fee: The $800 minimum every California entity owes, the LLC gross receipts fee tiers from $900 at $250,000 to $11,790 at $5,000,000, why each step is a cliff, and how to carry $6,800 a year as $200 a job in your overhead.
20 day preliminary notice: Civ. Code s.8204 gives you 20 days from first furnishing, and a late notice still protects the 20 days before service plus everything after. Who to serve, what s.8202 puts on the form, and how to prove you sent it.
Mechanics lien deadlines: 90 days from completion under Civ. Code s.8412 and s.8414, cut to 60 days and 30 days by a recorded notice of completion, then 90 days to sue under s.8460 and the s.8416 notice without which the lien is unenforceable.
Lien releases and waivers: The four statutory forms at Civ. Code s.8132 to s.8138, the two questions that pick one, why an unconditional release binds even if the check never clears, and how retention at 45 days and 10 days changes the timing.
Stop payment notice: How a stop payment notice intercepts undisbursed construction funds instead of attaching to the property, the 90, 60 and 30 day clock it shares with the lien on private work, and the payment bond required on public jobs over $25,000.
Get paid in 30 days: The owner owes the direct contractor within 30 days under Civ. Code s.8800 and the prime owes you within 7 days of receipt under BPC s.7108.5, with a disputed line capped at 150 percent of the amount actually in question.
Retention and release dates: Private retention is released by the owner 45 days after completion under Civ. Code s.8812 and passed down within 10 days under s.8814. Includes the worked calendar where a subcontractor lien window closes two days before the money is even due.
When a client will not pay: Five rungs in order, each with a California deadline: the dated demand, the stop payment notice, the lien at 30, 60 or 90 days from completion, and the 90 days to bring suit to foreclose under Civ. Code s.8460. Worked with real dates on one Riverside file.
Invoicing and payment applications: What each line on a California billing does: the license number under BPC s.7030.5, the jobsite address that sets the tax rate, retention as a deduction rather than a discount, and cumulative columns. Includes a $184,000 payment application that recovers a lost month.
Sales tax on materials and fixtures: Regulation 1521 makes you the consumer of materials and the retailer of fixtures on the same job. A worked HVAC contract moves the taxable measure from $76,200 to $99,000 on the contract form alone, plus the deemed profit trap on fixtures you fabricate yourself.
California home improvement contracts: The BPC s.7159 contract shape: the $500 written threshold, a down payment capped at the lesser of $1,000 or 10 percent, a stage schedule where money never runs ahead of value in place, and how to count the three business day cancellation window.
Change orders and extras: Written and signed before the extra work starts on residential jobs under BPC s.7159, the 150 percent cap on withholding a disputed amount (BPC s.7108.5), and the public works order of preference where agreement comes before force account.
What to charge per hour: Loaded labor cost per sold hour, the fixed stack including the $800 franchise tax and the biennial $450 or $700 CSLB renewal, escalation to the midpoint of construction, and why a 20 percent markup is only a 16.7 percent margin.
Where work is starting: Building permits, Caltrans advertisements and CEQAnet filings are all published before any invitation goes out. Read a permit status to know when to call, and use the 30 and 45 day CEQA review clocks to arrive years before a bid list exists.

Getting Licensed: California CSLB Classifications

48 guides, one per CSLB licence classification, from A General Engineering and B General Building through the C classifications: what work the classification lets you contract for, the four years of journey-level experience the board asks you to prove, the law and trade exams, and what the classification is worth once you hold it.

A General Engineering: What the A carries under 16 CCR 832, where it stops against a B, the DIR registration and prevailing wage gate on public work over $1,000, the payment bond over $25,000, and the four years of journey-level experience CSLB wants.
B General Building: BPC s.7057(a) lets a general building contractor take a prime contract only where the job needs two unrelated trades, so a single trade job belongs to a C. Covers the s.7031 exposure, the 7 day subcontractor payment clock, and the $450 plus $25,000 bond to get licensed.
B-2 Residential remodeling: Where B-2 stops and a full B starts under 16 CCR 832, why a bearing wall is the line, and the BPC s.7159 rules that cap your deposit at $1,000 on an $86,000 remodel. Plus the $450 application and the $25,000 bond.
C-2 Insulation and acoustical: What C-2 covers under 16 CCR 832, and why registered installation certificates gate permit closeout since the ECC Program replaced HERS on 1 January 2026. Includes the 82 degree indoor heat trigger, the 20 day preliminary notice, and the $450 plus $25,000 bond.
C-4 Boiler and steamfitting: The C-4 scope for boilers, burners, feedwater and steam mains, why hospitals permit through HCAI and schools through DSA, and how continuous special inspections set your weld schedule. Prevailing wage applies on public work over $1,000.
C-5 Framing and rough carpentry: Why a C-5 can prime single trade framing but needs a B the moment roofing and electrical sit in the same contract under BPC s.7057(a), plus the 90 to 30 day lien fork a recorded Notice of Completion opens under Civ. Code s.8414.
C-6 Cabinet and millwork: How CDTFA Regulation 1521 splits materials from fixtures and taxes a shop built cabinet on a cost price carrying deemed manufacturing profit, and how to build a delivery milestone payment schedule around the $1,000 deposit cap on a $60,000 kitchen.
C-7 Low voltage systems: Where low voltage stops and C-10 line voltage starts, why a fire alarm deferred submittal decides your start date, and how finishing last pushes retention to 45 days after completion under Civ. Code s.8812 with 10 days to pass it down.
C-8 Concrete contractor license: Bank, loose and compacted are three counts of the same dirt, and California has no standard method of measurement. Covers the Caltrans and Greenbook pay item families, the one acre SWPPP line, and the five foot trench permit.
C-9 Drywall and taping license: The burdened hour and the retention clock: 7 days for the prime to pay you under BPC s.7108.5, 45 days for private retention plus 10 more down the chain, the $500 home improvement rules, and four years of certified experience.
C-10 Electrical contractor license: The state electrician certification under Lab. Code s.3099 is not the C-10, and the two come from different agencies. Covers Title 24 energy documents, the ECC field verification change on 1 January 2026, the $450 application and the $25,000 bond.
C-11 Elevator and conveyance license: Special inspections as a condition of permit, deferred submittals that sit on your critical path, the 45 plus 10 day retention chain, and a lien window that drops from 90 days to 30 once a Notice of Completion is recorded.
C-12 Earthwork and paving license: Caltrans charges working days against the controlling activity, and a quantity moving more than 25 percent opens a price adjustment. Covers trench permits at 5 feet, SWPPP coverage at one acre, the $450 application and the $25,000 bond.
C-13 Fencing contractor license: The $500 licensing threshold under BPC s.7048, a down payment capped at the lesser of $1,000 or 10 percent, three business days to cancel, prevailing wage on public work over $1,000, and a city business tax certificate in every town you work.
C-15 Flooring and floor covering: CDTFA Regulation 1521 sorts what you install into materials, fixtures and equipment, and the sort decides whether tax lands on your cost or on the selling price. Plus the $1,000 deposit cap and 65 percent CALGreen waste diversion.
C-16 Fire protection license: The deferred submittal chain, special inspections as a permit condition, the DSA and HCAI review paths for schools and hospitals, and a lien window that can close four days before the owner has to release retention at 45 days.
C-17 Glazing: What a C-17 covers, plus the two code chapters settled at the order desk: Chapter 7A envelope rules inside a fire hazard severity zone and the Title 24 fenestration line, with four years of experience, two exams and a $25,000 bond.
C-20 HVAC: The C-20 route in California: four years, two exams, a $25,000 bond, and the field verification that moved from HERS to the ECC Program on 1 January 2026, where a registered certificate gates closeout and payment follows 30 days later.
C-21 Building moving and demolition: The C-21 scope and the three gates in front of the start date: the Cal/OSHA demolition permit, the hazardous materials survey and abatement, and CALGreen diversion at 65 percent, which is 312 of 480 tons on a real teardown.
C-22 Asbestos abatement: What a C-22 is worth in California: the CSLB classification, standing Cal/OSHA Division registration and certified workers, plus the 20 day preliminary notice and the lien window a recorded Notice of Completion cuts from 90 days to 30.
C-23 Ornamental metal: The C-23 scope, plus CDTFA Regulation 1521 and the deemed manufacturing profit on metal you fabricate yourself, special inspection on field welds and anchorage, and the $1,000 deposit cap on a $46,500 stair and rail package.
C-27 Landscaping: The C-27 route: four years, two exams, a $25,000 bond, the dig ticket before every trench, stormwater coverage at one acre of disturbance, and the 30 day lien window once a Notice of Completion is recorded on a job you just finished.
C-28 Lock and security: The C-28 route for a trade that crosses the $500 licensing threshold in BPC s.7048 several times a week, with the C-7 boundary, CASp reports as a lead source, 7 day sub payment under BPC s.7108.5 and the 150 percent withholding cap.
C-29 Masonry: Read the statement of special inspections before you price the block, because every continuous item puts an inspector on site while you grout. Covers the four dwelling seismic line, the $25,000 bond, two exams and 5 percent retention released 60 days after completion.
C-31 Construction zone traffic control: Almost all C-31 money is public, so DIR registration and a compliant certified payroll are the entry ticket. Covers the wage determination in force on the advertisement date, working days charged against the controlling activity, the 20 percent overhead cap and the half of one percent listing rule.
C-32 Parking and highway improvement: Four specification families measure the same stripe differently, and Caltrans final pay quantities are never remeasured. Covers escalating to the construction midpoint, the 20 percent path of travel cap on accessibility upgrades, and the 20 day preliminary notice on private lots.
C-33 Painting and decorating: Anything built before 1978 is a lead job under Cal/OSHA limits far stricter than the federal ones, and Chapter 7A governs the exterior in a fire hazard severity zone. Covers the $1,000 down payment cap on a $28,000 repaint, fall protection at 7.5 feet and the three day cancellation right.
C-34 Pipeline: Trench depth sets the cost: egress at 4 feet, cave-in protection and a Cal/OSHA permit at 5, stormwater coverage at one acre. Covers the 25 percent quantity swing that opens a price adjustment, the 150 percent withholding cap, and five weeks from progress invoice to money.
C-35 Lathing and plastering: Inside a fire hazard severity zone Chapter 7A specifies the wall you apply, with defensible space at 100 feet and an ember resistant zone in the first 5 feet. Covers the $1,000 down payment cap that starts a $46,000 re-stucco at 2.2 percent, fall protection above 7.5 feet and the $25,000 license bond.
C-36 Plumbing: CDTFA Regulation 1521 measures tax on your $1,500 cost under a lump sum contract or on the $2,400 selling price when the fixtures are stated separately, a $900 swing on one bathroom. Covers the Cal/OSHA trench permit at 5 feet, egress at 4 feet, CALGreen 65 percent waste diversion and the $25,000 bond.
C-38 Refrigeration: A $180,000 grocery subcontract at 10 percent retention parks $18,000, and it runs 55 days from your last day on site to your last dollar. Covers the 30 day lien window a recorded Notice of Completion leaves a sub, the indoor heat standard from 82 degrees and the $25,000 bond.
C-39 Roofing: Signing with the owner makes the clocks yours: a Notice of Completion recorded inside 15 days of your final cuts the lien window from 90 days to 60. Covers stage billing on a $38,000 reroof that starts on a $1,000 deposit, fall protection above 7.5 feet, and the Chapter 7A vents, eaves and valleys where the bid is won.
C-42 Sanitation system: California sends school work to DSA and hospitals to HCAI, and on-site wastewater to the county environmental health program, which writes its own soil evaluation, sizing and setbacks. Covers a $28,500 replacement where the biggest material buy lands before the first billable milestone, and the four milestones that get most of it paid inside three weeks.
C-43 Sheet metal: You fabricate, so CDTFA Regulation 1521 deems a manufacturing profit into the cost price of every fixture that leaves your shop, and the contract wording decides the tax base before you ever bill. Covers the 136 days from buying coil to retention landing, the 150 percent withholding cap, and Chapter 7A envelope work inside the 100 foot defensible space.
C-45 Sign: Every city you work in is a separate sign permit, a separate business tax certificate and a separate lead time, and the $500 threshold under BPC s.7048 means even a face swap needs the license. Covers the Cal/OSHA permit for work above 36 feet and the recorded notice of completion that cuts your lien window from 90 days to 30.
C-46 Solar: Since 1 January 2026 field verification runs through the ECC Program and a registered certificate gates permit closeout, which is why 16 days of documentation sit between the crew's last day and completion. Covers the 30 day owner payment clock, the 90 day lien window a recorded notice cuts to 60, and the $1,000 deposit cap.
C-47 General manufactured housing: The recorded certificate of installation is what turns a titled coach into real property a bank will mortgage, and everything below that floor is your permit. Covers the $500 license line, a down payment capped at the lesser of $1,000 or 10 percent, and a 90 day lien window cut to 60 by a recorded Notice of Completion.
C-49 Tree service: Defensible space runs to 100 feet from the structure with an ember-resistant zone in the first 5 feet, and on a district contract the wage determination in force on the advertisement date fixes your labor cost for three years. Covers the $500 line, the payment bond required above $25,000 and the six month clock to sue on it.
C-50 Reinforcing steel: An $8,000 inspection item caps the withholding at $12,000 under BPC s.7108.5, and the other $34,000 of a $46,000 progress payment is due within 7 days of the prime being paid. Covers the purchased weight that never comes back as a change order, retention at 45 days, and a 90 day lien window cut to 30 by a recorded Notice of Completion.
C-51 Structural steel: Or equal data is due within 35 days of award, while the shop drawings are still being detailed, and time related overhead is capped at 20 percent, so delay money belongs in the bid. Covers the statement of responsibility you sign before the first load, and a 30 day lien window on a trade that finished its work ten months before the building did.
C-53 Swimming pool: On an $86,000 pool the deposit is capped at $1,000, so the excavation, steel and gunite run on your money. Covers cave-in protection at 5 feet, egress at 4 feet, fall protection above 7.5 feet, and the county health file every public pool clears before it opens.
C-54 Ceramic and mosaic tile: You are the consumer on materials under CDTFA Regulation 1521, so the tax on a $3,780 tile allowance is your cost, and a client picking $19 porcelain over $9 adds $4,200 plus tax. Covers the 150 percent cap on withholding, 7 days from the prime contractor progress payment to yours, and the 30 day lien window once a Notice of Completion is recorded.
C-55 Water conditioning: The lesser of $1,000 or 10 percent binds, so a $6,400 whole house system carries a $640 deposit and three business days of cancellation before you install. Covers the $500 license threshold, the $25,000 bond, and where CDTFA Regulation 1521 puts you in the retailer seat.
C-57 Well drilling: Depth is the whole cost and nobody can price it from the surface, so the contract carries a stated base depth, a per foot rate above it and a change order signed at the sample tray. Covers the county well permit, the groundwater agency that can move a start date by months, and six months to sue on a public works payment bond.
C-60 Welding: Chapter 17 verifies your welder qualification records before it inspects a single weld, and a continuous inspection call means nobody welds on a day the inspector cannot attend. Covers the 20 day preliminary notice that still protects the 20 days before service, the 150 percent withholding cap and the $25,000 bond.
C-61 Limited specialty: The sentence you write on the application becomes the license, so a scope that names the surfacing supplied with your product bids two line items on a park job instead of one. There is no C-61 trade exam, only the 115 question Law and Business paper, four years of journey level experience, the $25,000 bond and the $500 line above which the work needs a license at all.
ASB Asbestos certification: The switch is 100 square feet of asbestos containing material: a 9 by 12 kitchen ceiling at 108 square feet is over the line, a 90 square foot bathroom floor is under it. The certification sits on the license you already hold, and it needs Cal/OSHA registration and trained workers behind it before your crew can stay in the room.
HAZ Hazardous substance removal: The removal item is bid as its own line and the certification is the eligibility check on the bidder, which is why the list stays short. Costs 40 hours of initial training plus an 8 hour refresher a year under 8 CCR 5192, and pays on a public clock with 5 percent retention released 60 days after completion and no lien behind it.

Setting Up: Starting a Contracting Business in California

18 guides covering the entity and the franchise tax, EDD employer registration, workers' compensation against licence status, the CDTFA seller's permit, DIR registration and certified payroll for public work, prevailing wage, Cal/OSHA's written safety and heat illness programs, and Title 24 and CALGreen on the job itself.

Workers comp and license status: BPC s.7125.2 suspends a license by operation of law on the day cover lapses, with no notice and no grace period. Covers the exemption certificate, the classifications that cannot use it, and an eleven day helper that put a $34,000 repaint outside BPC s.7031.
EDD employer registration: Registration is due within 15 days of paying more than $100 in wages in a quarter. The employer side is UI at 3.4 percent and ETT at 0.1 percent on the first $7,000, about $245 a year per person, plus the DE 9, DE 9C, DE 34 and DE 542 calendar.
Hiring your first employee: A three week countdown to a real Monday start: the EIN, comp bound with the certificate filed at CSLB, EDD registration, a written IIPP under 8 CCR 3203, and the I-9 within 3 business days. Plus daily overtime, meal periods and final pay.
Insurance certificates and endorsements: Why the additional insured endorsement matters more than the certificate, the $25,000 license bond and the $100,000 LLC worker bond beside it, and the workers compensation lapse that suspends a California license the same day with no grace period.
City business tax certificates: The city business tax certificate the permit counter asks for, why you register in every city you work in rather than where the truck sleeps, the field list that makes a new city fifteen minutes of typing, and what four days of registration cost a booked crew.
CDTFA seller permit: Regulation 1521 makes you the consumer of materials and the retailer of fixtures, so lighting, plumbing and cabinets put you on the retail side. The three question test, resale certificates at the supply counter, and a Q3 return due 31 October.
DIR registration and certified payroll: Lab. Code s.1725.5 and s.1771.1 make registration a bid qualification for you and for every sub over one-half of one percent of your bid, renewed every July 1, plus certified payroll under s.1776 and the 10 days you get to produce records.
California prevailing wage: The determination in force on the advertisement date governs the whole job under Lab. Code s.1773.2. Covers predetermined increases, what counts toward the hourly total under s.1773.1, the 8 hour daily overtime trigger, and the per worker per day penalties.
Caltrans and public works bids: How a bid item price is deemed full compensation, why final pay quantities are never remeasured, the 25 percent quantity swing, working days charged against the controlling activity, 5 percent retention and release 60 days after completion.
Bid ready checklist: The seven things an agency verifies before it reads your price: active license and classification, DIR registration for you and every listed sub, comp in force, named endorsements, security at 10 percent of the bid, and the one-half of one percent listing threshold.
Getting on GC bid lists: Under Pub. Contract Code s.4104 a sub performing more than one-half of one percent of the total bid has to be named in the envelope. Covers the prequalification pack, what a GC checks first, and why the useful call happens two weeks before bid day.
Cal/OSHA written safety program: Section 8 CCR 3203 gives every California employer a written Injury and Illness Prevention Program with eight required elements and five business days to produce it. Covers the one year record floor, tailgate meetings every 10 working days, and the Lab. Code s.6500 permits.
Cal/OSHA heat illness rules: Shade becomes mandatory at 80 degrees, high heat procedures switch on at 95, and water runs at a quart per person per hour under 8 CCR 3395. Includes the heat wave test, the 14 day acclimatization window and a July week costed out day by day.
Proposition 65 for contractors: The warning duty switches on at the tenth employee under Health and Safety Code s.25249.11(b). Covers the safe harbor sign content in 27 CCR 25600, the 60 day notice clock, and the $2,500 per day penalty arithmetic.
Title 24 and CALGreen: Which code edition binds a job is fixed by the permit application date under CBC s.1.1.8, an application lapses 180 days after filing, and CALGreen makes you divert 65 percent of construction and demolition waste by weight.
Accessibility upgrades and CASp: CBC s.11B-202.4 drags the path of travel into an ordinary tenant improvement, Exception 8 caps that spend at 20 percent of the adjusted construction cost, and the code fixes the six item order the money goes in. Plus what a CASp certificate buys under Civ. Code s.55.54.
Chapter 7A wildfire zone building: Chapter 7A and CRC s.R337 govern six exterior assemblies: Class A roof, ember resistant vents at 1/8 inch mesh, siding, glazing and decking within 10 feet. Plus the SFM 12-7A test numbers and the 100 foot defensible space under PRC s.4291.
SWPPP and stormwater pricing: The Construction General Permit switches on at one acre of disturbance, and an acre is 43,560 square feet counted across pad, haul route, stockpile and offsite trench. Who the discharger is, what QSD and QSP time costs, risk levels 1 to 3, and the bid lines.

Trade Playbooks — The Ontario Construction Trades, Mapped

43 construction trades and business types, each with a playbook: how to get into the trade (40 entry-path guides), licensing and certification requirements, a step-by-step "how to start a business" guide, and answers to common questions — for Ontario.

General Contracting — General contracting is not a certified trade in Ontario — there is no provincial "general contractor licence." What gates the work instead is municipal business licensing, building permits, and (for new homes) provincial home-builder licensing. Become a general contractor. How to start a general contracting business. General Contracting questions.
Residential Renovation — Renovation is one of the most accessible construction businesses to start because most cosmetic and non-structural work needs no provincial licence — but structural, electrical, plumbing, and HVAC scopes still require permits and certified trades. Become a renovation contractor. How to start a home renovation business. Residential Renovation questions.
New Home Building — Building new homes in Ontario is one of the few construction activities with a hard provincial licensing gate: you must be licensed by the Home Construction Regulatory Authority (HCRA) and enrol homes with Tarion for warranty coverage. Become a home builder. How to start a home building business. New Home Building questions.
Commercial Construction — Commercial construction has no special provincial trade licence, but the prequalification bar — bonding, $5M insurance, COR safety certification, and references — is what actually gates entry to the work. How to start a commercial construction business. Commercial Construction questions.
Industrial Construction — Industrial construction — plants, refineries, mines, power, and process facilities — is dominated by certified trades, owner safety qualification systems (ISN, Avetta, ContractorCheck), and heavy welding and pressure-equipment compliance. How to start a industrial construction business. Industrial Construction questions.
Electrical Contracting — Electrical is a compulsory trade and the most tightly licensed construction business in Ontario. To operate you need an ECRA/ESA Licensed Electrical Contractor (LEC) licence, which requires a designated Master Electrician. Become an electrician. How to start a electrical contracting business. Electrical Contracting questions.
Plumbing — Plumbing is a compulsory trade in Ontario. You need a 306A Plumber Certificate of Qualification to do the work, and many municipalities additionally require a Master Plumber licence to pull plumbing permits. Become a plumber. How to start a plumbing business. Plumbing questions.
HVAC & Refrigeration — HVAC/R is heavily regulated: the refrigeration and A/C mechanic trades (313A/313D) are compulsory, gas work needs a TSSA ticket, and handling refrigerant requires an ODP card. Become an HVAC technician. How to start a HVAC business. HVAC & Refrigeration questions.
Steamfitting — Steamfitter/pipefitter (307A) is a compulsory trade focused on industrial and commercial process and pressure piping — work that layers TSSA pressure-piping registration and ASME/CWB welding qualifications on top of the certificate. Become a steamfitter. How to start a steamfitting business. Steamfitting questions.
Sheet Metal Work — Sheet Metal Worker (308A) is a compulsory trade covering ductwork, architectural metal, and HVAC fabrication for commercial and industrial buildings; the residential installer stream is 308R. Become a sheet metal worker. How to start a sheet metal business. Sheet Metal Work questions.
Fuel Systems & Gas Fitting — Gas work in Ontario is regulated by the TSSA, not Skilled Trades Ontario. You need a gas technician/fitter certificate (G3, G2, or G1) scaled to the size of appliance you work on, plus a registered contractor. Become a gas fitter. How to start a gas fitting business. Fuel Systems & Gas Fitting questions.
Fire Protection & Sprinklers — Sprinkler & Fire Protection Installer (427A) is a compulsory trade. The business layers NFPA design standards, NICET certification, and Ontario Fire Code compliance on top of the trade certificate. Become a sprinkler fitter. How to start a fire protection business. Fire Protection & Sprinklers questions.
Elevator & Escalator — Elevating devices are among the most tightly regulated systems in Ontario. The mechanic trade is compulsory and the equipment is licensed and inspected by the TSSA throughout its life. Become an elevating devices mechanic. How to start a elevator business. Elevator & Escalator questions.
Concrete & Forming — Concrete work is not a compulsory trade in Ontario — there is no licence required to start — but ACI certification, the Cement Finisher (244G) credential, and silica-dust controls separate the credible operators. Become a concrete finisher. How to start a concrete business. Concrete & Forming questions.
Structural Steel — Structural steel erection is non-compulsory as a trade, but the work hinges on CWB welding certification and fall-protection/rigging compliance — the credentials owners and engineers actually check. Become an ironworker. How to start a structural steel business. Structural Steel questions.
Masonry — Masonry is a non-compulsory trade with a low licensing barrier to entry — the Brick & Stone Mason (401A) certificate is voluntary — so the differentiators are skill, silica controls, and restoration/heritage credentials. Become a mason. How to start a masonry business. Masonry questions.
Roofing — Roofing is non-compulsory — no provincial licence is required to start — which makes it accessible, but Working at Heights training is mandatory and manufacturer certifications gate the commercial warranty work. Become a roofer. How to start a roofing business. Roofing questions.
Waterproofing — Waterproofing — foundations, below-grade, decks, and building envelopes — is non-compulsory, but the completed-operations liability is severe, because failures show up as water damage years later. Become a waterproofing contractor. How to start a waterproofing business. Waterproofing questions.
Glazing & Curtain Wall — Architectural glass & metal technician (424A) is a voluntary trade, but curtain wall and storefront work is engineering-heavy and gated by manufacturer system certifications (Kawneer, EFCO, YKK AP). Become a glazier. How to start a glazing business. Glazing & Curtain Wall questions.
Insulation — Insulation spans residential spray foam and batt work through industrial mechanical insulation (253A) and EIFS exterior systems (455A) — none compulsory, but spray foam and EIFS rely on manufacturer applicator certification. Become an insulator. How to start a insulation business. Insulation questions.
Drywall & Plastering — Drywall is one of the most accessible construction businesses in Ontario — non-compulsory, low equipment cost — with the 451A (installer) and 453A (finisher) certificates voluntary but useful for commercial work. Become a drywaller. How to start a drywall business. Drywall & Plastering questions.
Painting & Finishing — Painting is the lowest-barrier construction business to start in Ontario — no licence, minimal equipment — but the industrial coatings niche (404D) is a credential-gated, higher-margin world of its own. Become a painter. How to start a painting business. Painting & Finishing questions.
Flooring Installation — Flooring — carpet, resilient, hardwood, tile — is non-compulsory and accessible, with manufacturer-certified installer programs and moisture-testing competency separating the warranty-grade contractors. Become a flooring installer. How to start a flooring business. Flooring Installation questions.
Demolition — Demolition is non-compulsory as a trade, but it is permit-, hazmat-, and notification-heavy: demolition permits, designated-substance (asbestos) surveys, and Ministry of Labour project notices all apply. Become a demolition worker. How to start a demolition business. Demolition questions.
Excavation & Grading — Excavation is non-compulsory but locate-and-safety-heavy: every dig needs utility locates through Ontario One Call, and trenching falls under strict O. Reg. 213/91 excavation and shoring rules. Become a heavy equipment operator. How to start a excavation business. Excavation & Grading questions.
Landscaping & Hardscaping — Landscaping and hardscaping is one of the easiest construction-adjacent businesses to start in Ontario — no trade licence — though pesticide application, tree work, and retaining walls bring their own certifications and permits. Become a landscaper. How to start a landscaping business. Landscaping & Hardscaping questions.
Road & Infrastructure — Roadbuilding and heavy civil work is non-compulsory as a trade but dominated by public tendering: MTO and municipal prequalification, bonding, traffic-control (book 7) compliance, and certified heavy-equipment operators. How to start a road and infrastructure business. Road & Infrastructure questions.
Utility Installation — Underground and overhead utility work — water, sewer, gas distribution, telecom, and powerline — is non-compulsory broadly, but powerline (434A) is its own certified trade and utility-owner qualification systems gate the work. Become a powerline technician. How to start a utility installation business. Utility Installation questions.
Environmental Remediation — Environmental remediation — contaminated soil, hazardous materials, spill response, and abatement — is non-compulsory as a trade but among the most regulated construction activities, governed by the MECP and strict hazmat rules. Become a remediation worker. How to start a environmental remediation business. Environmental Remediation questions.
Framing — Framing crews build the structure — walls, floors, and roofs — for builders and GCs, usually at piece rates per square foot. No licence is required; speed, crew, and a builder relationship are the business. Become a framer. How to start a framing business. Framing questions.
Finish Carpentry & Trim — Finish carpenters install the visible woodwork — trim, doors, stairs, built-ins, wainscoting. It is precision craft sold on portfolio, with one of the lowest startup costs in construction and strong renovation demand. Become a finish carpenter. How to start a finish carpentry business. Finish Carpentry & Trim questions.
Cabinetry & Millwork — Cabinet and millwork shops manufacture and install kitchens, vanities, closets, and commercial casework. Unlike site trades, this is a shop business — premises, machinery, and manufacturing workflow — with showroom-grade margins. Become a cabinetmaker. How to start a cabinetry and millwork business. Cabinetry & Millwork questions.
Deck & Fence — Deck and fence builders sell a finished product directly to homeowners — one of the most popular first construction businesses because the sales cycle is short, the jobs are repeatable, and the season is long enough to stack them. Become a deck builder. How to start a deck and fence business. Deck & Fence questions.
Low-Voltage & Data Cabling — Low-voltage shops install structured cabling, networks, security cameras, access control, and AV — the rare "electrical" business you can build without the five-year 309A apprenticeship, because much of the work sits outside the licensed electrical scope. Become a low-voltage technician. How to start a low-voltage cabling business. Low-Voltage & Data Cabling questions.
Fire Alarm & Life Safety — Fire alarm businesses live on recurring revenue: the Ontario Fire Code requires annual inspection and testing of fire alarm systems, so every commercial building is a repeat customer. The gate is CFAA technician qualification on top of the electrical layer. Become a fire alarm technician. How to start a fire alarm and life-safety business. Fire Alarm & Life Safety questions.
Solar PV Installation — Solar PV businesses design and install rooftop and ground-mount systems — riding net-metering, rising power prices, and battery storage. It is an electrical contracting business with an extra layer nobody else has: utility interconnection. Become a solar installer. How to start a solar installation business. Solar PV Installation questions.
EV Charger Installation — EV charger installers put Level 2 and DC fast chargers into homes, condos, and fleets — a young, fast-growing electrical specialty where navigating rebate programs is as much the product as the wiring. Become an EV charger installer. How to start a EV charging installation business. EV Charger Installation questions.
Drain & Sewer Services — Drain companies brand as drain companies, not plumbers: camera inspections, flushing, clog emergencies, and trenchless sewer replacement. It is equipment-heavy, emergency-priced, and one of the most franchise-contested niches in the trades. Become a drain technician. How to start a drain and sewer business. Drain & Sewer Services questions.
Concrete Flatwork — Flatwork crews pour and finish driveways, garage pads, sidewalks, and slabs — production concrete for builders and homeowners. It is volume work where scheduling around weather and the ready-mix truck is the skill. Become a concrete flatwork contractor. How to start a concrete flatwork business. Concrete Flatwork questions.
Decorative & Polished Concrete — Decorative concrete sells finishes, not just slabs — stamped and exposed-aggregate exteriors, polished floors for retail and warehouses, overlays and epoxy systems. It is the craft-margin side of concrete, sold on portfolio. Become a decorative concrete contractor. How to start a decorative concrete business. Decorative & Polished Concrete questions.
Flat & Commercial Roofing — Flat/low-slope commercial roofing is a different business from residential shingles: membrane systems (TPO, EPDM, mod-bit), manufacturer-certified warranties, property-manager clients, and service contracts that recur — with a much higher barrier and ceiling than steep-slope. Become a commercial roofer. How to start a commercial roofing business. Flat & Commercial Roofing questions.
Hardscaping & Interlock — Hardscapers build the hard parts of landscapes — interlock driveways and patios, retaining walls, steps, and outdoor living spaces. It is where landscaping's margin lives: high tickets, portfolio-driven sales, and craftsmanship that fails publicly if the base prep is wrong. Become a hardscaper. How to start a hardscaping business. Hardscaping & Interlock questions.
Snow & Ice Management — Snow and ice management is contract revenue in the dead season — plowing, salting, and sidewalk crews under seasonal or per-event contracts. The business is won on reliability and lost on slip-and-fall liability, which Ontario law has recently made more manageable. Become a snow and ice operator. How to start a snow and ice management business. Snow & Ice Management questions.

Profession Playbooks — The Ontario Built-Environment Professions

29 licensed and designated professions, each with a playbook: how to qualify (degree, experience, exams), the licence or designation, how to start a practice, and answers to common questions — for Ontario.

Architect — "Architect" is a legally protected title in Ontario — you cannot call yourself one, or offer architectural services to the public, without a licence from the Ontario Association of Architects (OAA). The path is a recognized degree, logged internship hours, and the ExAC exam. How to become an architect. How to start an architecture practice. Architect questions.
Professional Engineer — The P.Eng licence from Professional Engineers Ontario (PEO) is what lets you call yourself an engineer, take responsibility for engineering work, and stamp drawings. One licence covers all disciplines — civil, structural, geotechnical, mechanical, electrical, transportation — with you responsible for working only within your competence. This is the shared credential; for the actual businesses, see the discipline playbooks (structural, civil, geotechnical, mechanical, electrical, transportation). How to become a professional engineer. How to start an engineering firm. Professional Engineer questions.
Ontario Land Surveyor — Only a licensed Ontario Land Surveyor (O.L.S.) can legally perform cadastral (boundary) surveys, prepare legal survey plans, and give professional opinions on property boundaries. It is a tightly held, reserved-scope profession regulated by AOLS under the Surveyors Act. How to become a land surveyor. How to start a survey practice. Ontario Land Surveyor questions.
Quantity Surveyor — Quantity surveyors are the cost experts of construction — estimating, cost planning, contract administration, and claims. The title is not legally reserved, but the recognized credential is the PQS (Professional Quantity Surveyor) from the Canadian Institute of Quantity Surveyors (CIQS). How to become a quantity surveyor. How to start a cost consulting practice. Quantity Surveyor questions.
Construction Project Manager — Construction project management is the most accessible of the built-environment professions — there is no licence and no mandatory degree. The recognized credentials are Gold Seal Certification (Canadian Construction Association) and the globally recognized PMP, both earned mainly through experience. How to become a construction project manager. How to start a project management consultancy. Construction Project Manager questions.
Interior Designer — In Ontario the title "Interior Designer" is legally reserved — only Registered members of ARIDO may use it. Becoming one means an accredited degree, thousands of supervised hours, and the NCIDQ exam. How to become an interior designer. How to start an interior design practice. Interior Designer questions.
Urban Planner — Urban planners shape how land is used — zoning, development approvals, official plans, and growth policy. The recognized credential is the Registered Professional Planner (RPP), a protected designation from the Ontario Professional Planners Institute (OPPI). How to become an urban planner. How to start a planning consultancy. Urban Planner questions.
Home Inspector — Home inspectors assess a property's condition for buyers and sellers. Home inspection is one of the most accessible built-environment businesses to start — it is currently unregulated in Ontario — but the recognized, legally protected credential is the RHI (Registered Home Inspector) from OAHI. How to become a home inspector. How to start a home inspection business. Home Inspector questions.
Landscape Architect — Landscape architects design outdoor and public spaces — parks, streetscapes, campuses, green infrastructure, and site plans. "Landscape architect" is a protected title in Ontario; you earn it through an accredited degree, mentored experience, and the LARE — and it is a different profession from the landscaping trade. How to become a landscape architect. How to start a landscape architecture practice. Landscape Architect questions.
Energy Advisor — Energy advisors run home energy evaluations — the EnerGuide rating that unlocks retrofit rebates and proves new-build performance. It is one of the most accessible standalone businesses in the built environment, riding the home-retrofit and energy-rebate wave. How to become an energy advisor. How to start a home-energy advising business. Energy Advisor questions.
Building Envelope Consultant — Building envelope (building science) consultants design and diagnose the parts of a building that keep water, air, and heat where they belong — walls, roofs, windows, and the details between. It is a high-value specialty riding the building-performance and restoration wave. How to become a building envelope consultant. How to start a building envelope consulting practice. Building Envelope Consultant questions.
Building Code Consultant — Building code consultants and BCIN designers prepare the drawings and code analysis behind building permits — additions, renovations, change-of-use, and small buildings. Outside of architects and engineers (who are exempt), you need a BCIN and the Building Code exams to do it as a business. How to become a building code consultant. How to start a building code consulting practice. Building Code Consultant questions.
Facility Manager — Facility managers keep buildings running — maintenance, operations, vendors, energy, space, and safety. It is an unregulated field where credentials (IFMA's FMP and CFM) signal competence, and facilities-management services are a real standalone business hiring the trades we already serve. How to become a facility manager. How to start a facilities management business. Facility Manager questions.
Structural Engineer — Structural engineers design the bones of a building — foundations, framing, and load paths — and stamp the drawings that prove it will stand. It is one of the most in-demand engineering businesses, working alongside architects, builders, and developers on nearly every project. How to become a structural engineer. How to start a structural engineering firm. Structural Engineer questions.
Civil Engineer — Civil (land development) engineers design what makes land buildable — grading, roads, stormwater, water and sewer servicing, and the municipal approvals behind them. It is the engineering business closest to development: developers and municipalities are the clients. How to become a civil engineer. How to start a civil engineering firm. Civil Engineer questions.
Geotechnical Engineer — Geotechnical engineers figure out what the ground can carry — investigating soil and rock, designing foundations, and advising on excavation, slopes, and retaining. Almost every building and road needs one, and the work pairs an engineering practice with drilling and field testing. How to become a geotechnical engineer. How to start a geotechnical engineering firm. Geotechnical Engineer questions.
Mechanical (Building Services) Engineer — Building-services mechanical engineers design the systems that make buildings habitable — HVAC, plumbing, and fire protection. As an MEP discipline, they work on the design side alongside architects, while the mechanical trades install what they specify. How to become a mechanical engineer. How to start a mechanical engineering firm. Mechanical (Building Services) Engineer questions.
Electrical (Building Services) Engineer — Building-services electrical engineers design power distribution, lighting, fire alarm, and low-voltage systems for buildings. The "E" in MEP, they design and stamp what the electrical trade installs — and increasingly handle EV charging, solar, and smart-building systems. How to become an electrical engineer. How to start an electrical engineering firm. Electrical (Building Services) Engineer questions.
Transportation Engineer — Transportation engineers design and study how people and vehicles move — road design, traffic signals, and the Traffic Impact Studies that almost every development needs. Municipalities, MTO, and developers are the clients. How to become a transportation engineer. How to start a transportation engineering firm. Transportation Engineer questions.
Environmental Consultant — Environmental consultants assess and clean up the relationship between projects and the land — Phase I/II Environmental Site Assessments, contaminated-site work, Records of Site Condition, and designated-substance surveys. It is a distinct business from the remediation trade: consultants assess and sign off; contractors do the cleanup. How to become an environmental consultant. How to start an environmental consulting firm. Environmental Consultant questions.
Sustainability Consultant — Sustainability consultants help projects hit green-building and carbon targets — LEED and net-zero certification, energy modelling, and embodied-carbon analysis. It is a fast-growing advisory business riding building-performance codes, ESG, and decarbonization. How to become a sustainability consultant. How to start a green-building consulting practice. Sustainability Consultant questions.
Commissioning Provider — Commissioning providers verify that a building's systems actually perform the way they were designed — testing HVAC, controls, and electrical before handover and tuning them after. It is a quality-assurance business, required for LEED and increasingly demanded by owners and codes. How to become a commissioning provider. How to start a commissioning firm. Commissioning Provider questions.
Acoustics Consultant — Acoustics consultants manage sound and vibration — the noise studies that developments need for planning approval, and the room and building acoustics that make spaces work. It is a specialized, high-value niche with steady demand from developers and design teams. How to become an acoustics consultant. How to start an acoustics consulting firm. Acoustics Consultant questions.
Construction Materials Testing — Construction materials testing (CMT) firms are the quality control of the build — sampling and testing concrete, soils, asphalt, and steel in the field and the lab so engineers and owners know the work meets spec. It is a testing-and-inspection business that pairs naturally with geotechnical engineering. How to become a materials testing technician. How to start a construction materials testing business. Construction Materials Testing questions.
Building Condition & Reserve Fund Consultant — Building-condition consultants tell owners what shape a building is in and what it will cost to keep — Building Condition Assessments, Property Condition Assessments for transactions, and the Reserve Fund Studies that Ontario condos are legally required to commission. It is a building-engineering advisory business, not a real-estate one. How to become a building condition consultant. How to start a building-condition consulting practice. Building Condition & Reserve Fund Consultant questions.
Designated Substance & Hazmat Consultant — Designated-substance and hazmat consultants find what is hidden in a building before it is renovated or demolished — asbestos, lead, mould, silica, and other designated substances — and write the surveys the law requires before work starts. It is a distinct business from the abatement trade: consultants survey and specify; abatement crews remove. How to become a hazardous materials consultant. How to start a hazardous materials consulting practice. Designated Substance & Hazmat Consultant questions.
Geomatics & Drone Survey — Geomatics and drone-survey businesses capture the world as data — topographic surveys, drone mapping and volumes, 3D laser scanning, and GIS. It is the fast-growing, technology-driven side of surveying, distinct from the cadastral (legal boundary) work reserved to licensed Ontario Land Surveyors. How to become a geomatics technologist. How to start a geomatics and drone-survey business. Geomatics & Drone Survey questions.
BIM / VDC Consultant — BIM and VDC (Virtual Design & Construction) consultants run the digital backbone of modern projects — building information models, clash detection and coordination, 4D/5D, and scan-to-BIM. It is the technology-services business of construction, helping designers, builders, and owners deliver projects digitally. How to become a BIM consultant. How to start a BIM and VDC consulting business. BIM / VDC Consultant questions.
Heritage Consultant — Heritage consultants help projects navigate the past — Heritage Impact Assessments, Cultural Heritage Evaluation Reports, and conservation plans that development approvals increasingly require under the Ontario Heritage Act. It is a specialized advisory business at the intersection of planning, architecture, and history. How to become a heritage consultant. How to start a heritage consulting practice. Heritage Consultant questions.

Frequently Asked Questions

Who is AEC Stack for?: Anyone ready to start or run their own construction business. Tradespeople, project managers, engineers, entrepreneurs — if you have industry experience and want to be your own boss, this is built for you. No knowledge of incorporation, licensing, or compliance required.
What kind of business can I start?: General contracting, subcontracting, specialty trades like electrical, plumbing, HVAC, roofing, concrete, framing, demolition, landscaping, and more. Engineering firms, project management consultancies, construction technology companies. If it's in the built environment, you can build it here.
Already have a business?: Upload your existing documents — incorporation papers, insurance certificates, licenses, registrations — and see exactly where you stand. What's in place, what's missing, and close the gaps yourself.
How is this different from hiring a lawyer and accountant?: A lawyer helps you incorporate. An accountant files your taxes. Neither one gets you licensed, insured, compliant, bidding on work, and managing a pipeline. With AEC Stack you handle the full picture yourself — incorporation through operations, project matching, and team management — without needing to hire an office manager, compliance tracker, or bookkeeper.
Where is AEC Stack available?: Ontario, Canada right now. Every regulation, license, and registration requirement is built deep for the province. Expanding across Canada.
What do I need to get started?: Your area of expertise and your location. That's it. Read the 11 free guides at aecstack.com/guides to understand every step, or jump straight in.

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