Contractor Licensing in California: CSLB Classes and the Minor-Work Limit

California’s Contractors State License Board (CSLB) draws the line in one sentence: anyone who builds or alters a structure must be licensed “if the project requires a building permit or uses any additional workers or the total cost (labor and materials) of one or more contracts on the project is $1,000 or more.” If you are still working out whether a job needs a license at all, start with the method in Do I Need a Contractor License? This article is the California follow-up: which license, how to get it, and what working without one costs.

The classes: B, B-2, C and the D subcategories

The CSLB issues licenses by classification, under Business and Professions Code §7055: A (General Engineering), B (General Building), B-2 (Residential Remodeling) and C (Specialty). You may add as many classifications as you qualify for. For home-service work, the choice is usually among these four:

If you run a garage-door, pool-service or window-covering business, read the D-28, D-35 and D-52 definitions before you settle on a class. If you sell multi-trade remodels, compare the B-2’s three-trade rule with the B’s two-trade rule against the jobs you actually take.

The minor-work limit, read closely

The small-job exemption is §7048, last amended effective January 1, 2026. It applies only when every condition holds: under $1,000 for the whole project, labor and materials together; no building permit; no splitting the job into smaller contracts; no advertising as a contractor (under §7027.2, work under $1,000 may be advertised only with a statement that you are not licensed); and nobody employed “to perform, or assist in performing, the work.” Those conditions are set side by side with Florida’s and Arizona’s in Do I Need a Contractor License? Two of them catch people most often, the split invoice and the helper.

Say a handyman is asked to rehang four doors and patch the drywall around them for $1,400, and the homeowner suggests two invoices of $700. The split does not help: it is one project, and the exemption does not apply where the work is divided into contracts under $1,000. The same handyman working alone on a $600 fixture job that needs no permit, and not advertising as a contractor, is inside it. Bring a paid helper and he is not.

Getting licensed

• A qualifier. Every license needs a qualifying individual who meets the experience and exam requirements and is responsible for the construction operations: you, an officer of your corporation or LLC (the RMO), or a Responsible Managing Employee working at least 32 hours a week or 80 percent of the business’s operating hours, whichever is less (§7068). The CSLB adds that an RME qualifies only one active license, and nobody may qualify more than three firms in a year.
• Four years of experience. Within the last ten years, “at least four full years of experience at a journey level, or as a foreman, supervisor, or contractor” in the classification, certified by people who know the work. Accredited schooling or an approved apprenticeship can count, but not “for more than 3 years of the experience” (16 CCR §825).
• The exams. A trade exam for the classification and the Law and Business exam. §7065 waives the exam for a qualifier who passed it in the same classification, or qualified a license in good standing in it, within the past five years. New applicants also complete an open-book asbestos exam.
• The paperwork. Age 18 or older; Live Scan fingerprints, with $32 to the Department of Justice and $17 to the FBI plus the site’s own fee. Apply for one classification at a time when an exam is required.
• The fees. $450 to apply for one classification, then an initial license fee of $200 for a sole owner or $350 for any other business, paid after you pass.

The bond, insurance and workers’ comp

• The contractor’s bond. $25,000 (§7071.6), for consumers harmed by defective work and other license-law violations and for employees owed wages; the CSLB accepts a cashier’s check instead. A further $25,000 bond of qualifying individual applies when an RME qualifies the license, or an RMO who owns less than 10% of the voting stock.
• LLCs. A $100,000 employee/worker bond on top, and liability insurance of at least $1 million for five or fewer personnel of record, plus $100,000 for each additional one, up to $5 million.
• Workers’ comp. C-8 concrete, C-20 HVAC, C-22 asbestos abatement, C-39 roofing and C-61/D-49 tree service licensees must carry it “whether or not they have employees.” Others with no employees may file an exemption, which stops being valid when you hire. A lapse suspends the license, and work done while suspended counts as unlicensed. The CSLB’s Winter 2025 newsletter says the requirement for all contractors, originally scheduled for 2026, will now take effect in 2028. How states set these rules is in Workers’ Comp: When Your State Requires It.

What §7031 does to an unlicensed bill

The fines and jail terms for contracting without a license, under §7028 and the CSLB’s administrative citations, are summed up in the general licensing article linked above. The section that ends businesses is §7031, because it reaches money already earned:

• No suit to collect. A contractor cannot sue for pay on work that needs a license without alleging it was “a duly licensed contractor at all times during the performance of that act or contract,” whatever the merits.
• Money back. A customer who used an unlicensed contractor may sue “to recover all compensation paid.”
• No security. A security interest taken to secure payment is unenforceable.
• Little room for excuses. “Substantial compliance” is not available to someone never licensed in California; a court may find it only for a contractor who was licensed before the work, acted reasonably and in good faith, and fixed the problem promptly.

Say an unlicensed painter takes a $9,000 interior job, collects $6,000, and the customer refuses the last $3,000. Under §7031(a) the painter cannot sue for the $3,000. Under §7031(b) the customer can sue for the $6,000 already paid, though the walls are painted.

Once the license arrives, §7030.5 requires its number in your contracts, bids and advertising; what counts as an ad is in Your License Number in Ads. Then put the renewal date and the workers’ comp expiry in the same calendar, because a lapse in either can leave you working without a valid license.

General information, not legal or tax advice. Rules change and vary by state; check with the agency named above or a professional for your situation.