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California

Getting and keeping a CSLB license

California will not let you contract for a job worth 500 dollars or more without a CSLB license, and the classification you hold decides what you are allowed to sign for. These guides cover the experience the board accepts, the law and trade exams, the bond and the qualifying individual, renewal, and every A, B and C classification the board issues.

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63 guides on this

How to run the businessDo you need a licenseBPC 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.How to run the businessGet your CSLB licenseThe 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.How to run the businessCSLB experience requirementThe 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.How to run the businessContractor bond and qualifierA 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.After you qualifyCity business tax certificatesThe 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.Before you qualifyB General BuildingBPC 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.Before you qualifyB-2 Residential remodelingWhere 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.Before you qualifyC-17 GlazingWhat 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.Before you qualifyC-20 HVACThe 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.Before you qualifyC-21 Building moving and demolitionThe 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.Before you qualifyC-27 LandscapingThe 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.Before you qualifyC-28 Lock and securityThe 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.Before you qualifyC-35 Lathing and plasteringInside 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.Before you qualifyC-39 RoofingSigning 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.Before you qualifyC-42 Sanitation systemCalifornia 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.Before you qualifyC-46 SolarSince 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.Before you qualifyC-51 Structural steelOr 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.Before you qualifyC-53 Swimming poolOn 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.Before you qualifyC-57 Well drillingDepth 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.Before you qualifyC-61 Limited specialtyThe 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.Before you qualifyASB Asbestos certificationThe 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.How to run the businessCSLB license renewalActive 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.How to run the businessSole owner or LLCThe $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.After you qualifyWorkers comp and license statusBPC 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.After you qualifyHiring your first employeeA 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.After you qualifyInsurance certificates and endorsementsWhy 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.How to run the businessWhat to charge per hourLoaded 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.Before you qualifyA General EngineeringWhat 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.Before you qualifyC-2 Insulation and acousticalWhat 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.Before you qualifyC-4 Boiler and steamfittingThe 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.Before you qualifyC-5 Framing and rough carpentryWhy 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.Before you qualifyC-6 Cabinet and millworkHow 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.Before you qualifyC-7 Low voltage systemsWhere 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.Before you qualifyC-8 Concrete contractor licenseBank, 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.Before you qualifyC-9 Drywall and taping licenseThe 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.Before you qualifyC-10 Electrical contractor licenseThe 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.Before you qualifyC-11 Elevator and conveyance licenseSpecial 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.Before you qualifyC-12 Earthwork and paving licenseCaltrans 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.Before you qualifyC-13 Fencing contractor licenseThe $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.Before you qualifyC-15 Flooring and floor coveringCDTFA 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.Before you qualifyC-16 Fire protection licenseThe 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.Before you qualifyC-22 Asbestos abatementWhat 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.Before you qualifyC-23 Ornamental metalThe 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.Before you qualifyC-29 MasonryRead 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.Before you qualifyC-31 Construction zone traffic controlAlmost 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.Before you qualifyC-33 Painting and decoratingAnything 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.Before you qualifyC-34 PipelineTrench 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.Before you qualifyC-36 PlumbingCDTFA 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.Before you qualifyC-45 SignEvery 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.Before you qualifyC-47 General manufactured housingThe 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.Before you qualifyC-49 Tree serviceDefensible 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.Before you qualifyC-50 Reinforcing steelAn $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.Before you qualifyC-54 Ceramic and mosaic tileYou 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.How to run the businessCSLB law and trade examsLaw 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.How to run the businessStart a construction businessTen 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.How to run the businessInvoicing and payment applicationsWhat 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.After you qualifyBid ready checklistThe 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.Before you qualifyC-32 Parking and highway improvementFour 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.Before you qualifyC-38 RefrigerationA $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.Before you qualifyC-55 Water conditioningThe 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.Before you qualifyC-60 WeldingChapter 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.Before you qualifyHAZ Hazardous substance removalThe 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.Before you qualifyC-43 Sheet metalYou 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.

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