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Stucco is not a finish in California, it is the wall: going out on your own with a C-35
You can run a straight screed across a two story gable, mix by feel, and float a corner that still looks right ten years later. That craft is not what you sell once your name is on the contract. What you sell is a wall assembly somebody else specified, that an inspector judges as a system, and that in much of this state has to keep embers out of a building.
That is the distance between a plasterer and a C-35 Lathing and Plastering contractor. The plasterer applies the coats. The contractor signs for the assembly, on a schedule and at a price they set. This page leads with the two things that decide whether that works: the fire zone envelope and the residential contract.
Inside a fire hazard severity zone, your wall is a code assembly
Chapter 7A of the building code governs the exterior envelope in a fire hazard severity zone. Defensible space runs 100 feet from the structure, with an ember-resistant zone within 5 feet of it. California builds to Title 24 rather than the I-Codes, and the edition your job is judged against is fixed by the permit application date, not by the day your crew shows up.
Here is why that is your trade rather than somebody else's problem. Plaster over lath is one of the assemblies a designer reaches for when Chapter 7A has to be answered, so the exterior you apply is not decoration hung on a structure, it is the part chosen to resist ignition. On a rebuild the question always arrives in the same form: does what you are installing match the assembly on the drawings, down to the accessories and the barrier behind the lath.
Two consequences most bidders miss. The 5 foot strip at the base of the wall is the zone the code cares about hardest, and it is exactly where this trade stacks lath, parks the mixer and drops sand. And local amendments need express findings filed with the Commission, so the detail the next city over accepted is not automatically the one this plan checker passes. Read the approved plans, not the last job.
Framed properly, this is the strongest market this trade has had in a generation. Rebuild work is a specified, inspected assembly, and a contractor who talks about the wall as a system is not compared per square foot with the crew that turns up with a hopper. Building in a California wildfire zone covers the envelope side.
Three coats, four bills: the contract is your cash plan
C-35 revenue that is not tract work is residential repair, remodel and rebuild, which puts it under the home improvement contract rules in the BPC s.7159 family. Those rules cut against the way this trade spends money, because plaster is front loaded on labor and material and back loaded on the coat the customer can see.
- Written contract required above $500.
- Down payment capped at the lesser of $1,000 or 10 percent of the contract price.
- Payments may not run ahead of the value delivered.
- Prescribed headings and type sizes are mandatory.
- Right to cancel of three business days, with longer periods for some buyers and after a declared disaster.
- Change orders written and signed before the extra work starts.
Run it on a job. A full tear-off, re-lath and three coat exterior on a 1954 house, contract price $46,000.
| The question | The answer | Why |
|---|---|---|
| Legal down payment | $1,000 | The cap is the lesser of $1,000 or 10 percent, and 10 percent here is $4,600 |
| That as a share of the job | 2.2 percent | The number your cash plan is built around |
| When you bill lath and scratch | As each stage is delivered | Payments may not run ahead of value delivered |
| Owner wants a heavier texture in week two | Written, signed change order first | Before the extra work starts, not at the final invoice |
Two point two percent is what you start a $46,000 job on, in a trade where the scaffold, the lath, the accessories and the biggest labor push all land before the color coat goes on. The fix is a progress schedule in stages the customer can see: barrier and lath, scratch, brown complete and cured, color and final walk, each billed as it is delivered and written into the contract at the kitchen table. The home improvement contract rules is the page to read before you print a contract pack.
The declared disaster line catches contractors chasing rebuild work, because the cancellation period is longer there, and a template bought out of state does not carry it. That turns a signed job into one that walks in week two.
Change orders deserve their own habit, because the scaffold is up and the mixer is running, so every crack on the far elevation looks free from the ground. Getting paid for extras has the wording.
On tract and commercial work you are a sub, and the protections change shape. Serve the preliminary notice within 20 days of first furnishing (Civ. Code s.8204) on every job, because a late one still protects the 20 days before service and everything after. The prime pays you within 7 days of receiving the progress payment your work sits in (BPC s.7108.5), and may withhold no more than 150 percent of a disputed amount. The California lien deadline calculator dates the rest from your completion date.
What the C-35 covers, and where it stops
The classifications sit in the 16 CCR 832 family, and work outside the class you hold is not permitted. The C-35 is lath and accessories, exterior cement plaster and stucco, interior and veneer plaster, ornamental plaster, and the repair of all of it.
| The work the customer asks for | The classification |
|---|---|
| Lath, stucco, interior plaster, patching and repair | C-35 |
| Gypsum board hung, taped, finished and textured | C-9 drywall |
| Painting and coating the wall you just floated | C-33 painting and decorating |
| Brick, block, stone and structural masonry | C-29 masonry |
| The framing and sheathing the lath goes onto | C-5 framing and rough carpentry |
If the customer wants the siding fixed, two windows swapped and the exterior redone under one contract, that is a license question. A general building contractor taking a prime contract needs at least two unrelated building trades or crafts under BPC s.7057(a), which is why stucco contractors add a B or take the B-2 residential remodeling route rather than hand away the rest of the job.
The pairing that shows up most alongside a C-35 is C-9 drywall, because one crew finishes an interior and an exterior, and a company that does both is not idle when half the market is slow. C-33 painting and decorating is the other, since on repair work the plaster and the coating are one decision made by one customer.
Four years on the wall, the exam, and the money to open
CSLB wants four years of journey-level experience within the last ten (16 CCR 825), with education creditable for up to three of them. Journey-level counts as journeyman, foreman, supervising employee or contractor, so what counts here is the years you set up the wall, called the mix and the accessories, ran a crew and handed off a finished elevation. Certification is the bottleneck in a trade with this much movement between employers, so line up the contractors and foremen who can sign for each stretch before you file. What CSLB counts as experience has the certifier list.
Two exams, Law and Business at about 115 questions and the trade exam at about 100, multiple choice and closed book at a PSI test center, calibrated per version rather than against a fixed percentage. Working plasterers get caught by the written form of what they do by hand: assembly and barrier detail, accessories and control joints, estimating arithmetic and plan reading. The two exams is the study map.
Opening costs stay small, which is why this class is a real route out of somebody else's truck. It is $450 for the original application, then $200 to issue as a sole owner or $350 otherwise, biennial renewal at $450 or $700 with no continuing education, and the $25,000 license bond under BPC s.7071.6, with a further $100,000 employee and worker bond on the LLC route under BPC s.7071.6.5. Workers compensation goes in before anybody else is on the scaffold, because the license is suspended by operation of law the day cover lapses, with no warning and no grace. The application sequence, the bond and the qualifier, workers comp and choosing the entity run in that order.
One Title 8 note belongs to this trade specifically: plastering works off scaffold, and fall protection starts above 7.5 feet, which is most of the elevations you bid. Behind it sits a written Injury and Illness Prevention Program produced within 5 business days of a request, and tailgate meetings at least every 10 working days.
Where a C-35 finds work
Residential repair and rebuild is the fastest lane, and the contract above decides whether you keep the money. Tract and multifamily runs through generals: building permits published by Los Angeles, San Francisco, San Diego and Sacramento show those jobs as they are pulled, and CEQAnet filings surface the larger ones at environmental review, long before anybody takes bids. Public work is the third. Prevailing wages apply over $1,000, you and every listed subcontractor must be DIR registered to bid with registration renewing July 1, certified payroll goes in electronically at least monthly, and school work goes to DSA rather than the city. Where work is starting in California covers the feeds and what to charge builds the rate.
Bid the assembly, not the yardage
Take the last rebuild elevation you ran for somebody else and write down what the barrier, the lath, the accessories and the cure actually cost in hours. Then look at the square foot number it was bid at. That gap is why the name on the contract drove the newer truck.
On AEC Stack there is no monthly subscription. The platform fee is 2.5 percent of each invoice processed through the platform, so the quoting and the invoicing earn their keep on jobs that actually pay.
Open a working business file and write your next residential quote with the down payment cap, the stage billing and the change order rule already in it.
Keep going
Where this happens on AEC Stack
Set the business upIncorporation, CRA accounts, WSIB, trade licensing and insurance, in order, tracked to done.The dates that cost California contractors money
One email a month. The lien deadline and prompt payment and retention arithmetic this site already does for you, the dates it turns on, and every new guide the day it goes up.
- California lien deadline calculator: The 20-day preliminary notice, and what a recorded Notice of Completion does to your 90 days. It compresses them to 30 or 60.
- California prompt payment and retention calculator: Two clocks, not one. Progress payments from the demand, and retention from completion rather than from your final invoice.
- Every new guide the day it goes up. 88 are live for California right now, the most recent being "Do you need a license" on 20 August 2026.