A homeowner offers $1,500 to redo a bathroom vanity and some tile, and the work looks simple enough to take on a handshake. In California, doing that job without a contractor license is a misdemeanor. It can also forfeit your right to sue for payment, even if the work was flawless and the client is simply refusing to pay.
For firms that bid public works, the stakes rise. A missing or mismatched license can sink a low bid at award, expose the firm to penalties, and hand a competitor grounds for a bid protest. The Contractors State License Board (CSLB) answers the same handful of questions every day. What follows covers them in the order a growing firm runs into them. Fees and rules change, so confirm current figures with CSLB before you file anything.
Where the license requirement starts and what skipping it costs
Beginning January 1, 2025, AB 2622 raised the minor work exemption from $500 to $1,000. Any job where labor and materials together reach $1,000 or more requires a license. The higher exemption applies only when the work does not need a building permit. Unlicensed operators working under the exemption must also say in their advertising that they are not licensed.
The exemption cannot be gamed by splitting a job. A handyman who quotes $850 to replace one section of fence, with no permit required, is within the exemption. If the same handyman quotes $2,400 to rebuild the whole fence, he needs a license, and breaking that $2,400 into three invoices does not change the answer.
The penalties are steep. Under Business and Professions Code Section 7028, a first offense for contracting without a license can bring up to six months in jail, a fine of up to $5,000, or both. CSLB can separately issue administrative citations of up to $15,000. Section 7031 is often the provision that does the most damage. An unlicensed contractor cannot sue to collect for the work, and the client can sue to recover money already paid.
Choosing the classification that matches the work you bid
CSLB sorts licenses into three groups. Class A, General Engineering, covers fixed works that require specialized engineering knowledge, such as grading, paving, pipelines and bridges. Class B, General Building, covers structures built for shelter or occupancy. Class C, Specialty, covers more than 40 individual trades, including C-10 Electrical, C-36 Plumbing, C-20 Warm-Air Heating, Ventilating and Air-Conditioning, C-39 Roofing and C-33 Painting and Decorating.
The B license has limits that trip people up. A general building contract must involve at least two unrelated trades, unless the work is framing or carpentry. A B contractor generally cannot take a single-trade job unless it also holds that C classification or subcontracts the work to a properly licensed specialty contractor. A newer option, B-2 Residential Remodeling, covers non-structural remodeling of existing homes involving three or more unrelated trades.
The common mistake is chasing the broadest license instead of the right one. A firm that does mostly roofing is usually better served by a C-39, which matches its actual work. On public works, the awarding agency will specify the classification the prime contract requires, and subcontractors need their own appropriate classifications. Read the bid documents before you decide which license to pursue or add.
Qualifying on experience and getting through the application
Every license needs a qualifying individual who shows at least four years of journey-level experience or higher within the last 10 years. That experience can come from work as a journeyman, foreman, supervising employee, contractor or owner-builder. Education, apprenticeship or technical training can be credited for up to three of those years, but at least one year must be hands-on practical experience. Someone with direct knowledge of your work, such as a former employer, a fellow employee or a union representative, must certify it on the application.
Vague experience descriptions are a frequent reason applications get sent back. A line like "installed 200-amp residential panels and ran branch circuits" tells the reviewer what you actually did. A bare job title like "electrician" does not. The sequence below is the path most applicants follow.
- Pick your classification using CSLB's published classification descriptions.
- Choose your entity: sole owner, partnership, corporation or limited liability company. Register a corporation or LLC with the Secretary of State first.
- File the Application for Original Contractor License with the $450 application fee.
- Complete Live Scan fingerprinting once CSLB sends instructions. Expect roughly $50 to $90 in Department of Justice, FBI and rolling fees, depending on the site.
- Pass the Law and Business exam and your trade exam. CSLB will tell you how to schedule.
- File your $25,000 contractor's bond and proof of workers' compensation coverage or an exemption.
- Pay the initial license fee: $200 for a sole owner, $350 for other entities.
Plan on two to four months from submission to license, depending on CSLB's backlog and how quickly you schedule exams. CSLB posts current processing times. An application becomes void 18 months after CSLB accepts it, so don't let it stall. Exam waivers are available in some cases, for example when the qualifier has held the same classification within the past five years. The waiver is requested on the application, and CSLB decides whether you meet the conditions.
Bonds, insurance and what they actually cost you
Since January 1, 2023, the contractor's license bond has been $25,000. You do not put up $25,000. You pay a surety an annual premium that is a fraction of the bond amount, and the rate depends heavily on your credit and business history. Shop it with more than one surety or broker.
Workers' compensation is where firms most often get caught. If you have employees, you need coverage. Some classifications, including C-39 Roofing, must carry it even with no employees, and the list of classifications covered by that rule has grown in recent years. Check CSLB's current requirements for your classification instead of relying on what applied when you first got licensed.
LLCs carry extra obligations. In addition to the license bond, an LLC must post a $100,000 bond for the benefit of workers and maintain liability insurance. The required insurance amount scales with the number of people listed on the license. Confirm the current amounts with CSLB before you choose an LLC structure, because they affect your overhead from the first day.
What public works adds on top of the CSLB license
A CSLB license is the entry ticket, not the whole requirement. Section 7028.15 makes it a misdemeanor to submit a bid to a public agency without the proper license. Awarding agencies typically require the license number and classification on the bid form. Some federally funded projects allow licensure at award rather than at bid opening, so read the bid documents and ask the agency if the timing is unclear.
Public works also requires separate, annual contractor registration with the Department of Industrial Relations. This applies to primes and to subcontractors at every tier, and the DIR sets the current fee. Certified DBE, WBE and SBE firms should keep license status, DIR registration and certification current at the same time. A lapse in any one of the three can make you unusable to a prime that is counting on you to meet a participation goal.
The practical move this week is to look up your own license on CSLB's website. Confirm the classification, bond and workers' comp information match what you think is on file, then put the renewal and DIR registration dates on the office calendar before the next bid deadline arrives.
