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California - 2026 Contractor License Requirements
Official California contractor license lookup information, agency details, and homeowner notes for verifying a contractor before hiring.
About California contractor licensing
California has one of the strongest homeowner-facing contractor systems in the country. The Contractors State License Board, or CSLB, maintains a detailed public lookup that lets you confirm license class, bond, workers' compensation coverage, and disciplinary information before a project starts. For homeowners, California's system is unusually transparent and worth using carefully.
How licensing works in California
California requires statewide licensure for most construction work over the state's low threshold, and the license class matters. Class A covers general engineering, Class B covers general building, and Class C includes more than 40 specialty trades. CSLB also ties licensure to consumer protections such as a contractor bond, and workers' compensation coverage is required when the business has employees. For homeowners, that means the right question is not just whether a contractor is licensed, but whether the contractor holds the right class and current coverage for your project.
Project thresholds
California generally requires a CSLB license when the total project price, including labor and materials, is $500 or more.
What to verify in California
Use the CSLB Check a License tool and search by license number, business name, or personnel name. Confirm the license is active, review the class code, and check the bond section; California requires a contractor bond, and many homeowners also review workers' compensation status. The CSLB record may show complaint disclosures, personnel, address, and classifications. If a company is selling a whole-home remodel under one contract, make sure a Class B or appropriate specialty combination actually appears on the record.
State-specific tips
- › Ask for the CSLB number before the first meeting; in California, serious contractors usually provide it without hesitation.
- › For employee-based companies, check workers' compensation on CSLB instead of relying on a verbal claim that everyone is insured.
- › If a contractor only holds a C specialty license, confirm that the proposed contract does not exceed what that classification legally covers.
- › Use the bond information as a credibility check; California's $25,000 contractor bond is part of the consumer-protection framework.
- › For home improvement salesperson activity, verify the exact company and salesperson relationship when someone other than the owner is selling the job.
Free template
California Contractor Agreement Template
Download a free homeowner-contractor agreement template built for California law.
Building permits
California Building Permit Guides
Permit authority, fees, application process, and requirements for every county and city in California.
Frequently Asked Questions
- What work requires a licensed contractor in California?
- Any construction, alteration, improvement, or repair project with a combined labor and materials cost of $500 or more requires a CSLB-licensed contractor under Business and Professions Code §7028. This covers most home improvement work: additions, remodels, roofing, electrical, plumbing, HVAC, and fencing. Even below $500, specialty trade work — electrical, plumbing, and HVAC — requires its own licensed contractor regardless of project size.
- What is the difference between bonded, licensed, and insured?
- Licensed means the contractor has passed CSLB's experience and examination requirements and holds an active state credential. Bonded means the contractor carries a $25,000 Contractor's License Bond required by the CSLB — this provides limited recourse if a contractor fails to complete work or causes damage, up to the bond amount. Insured typically refers to general liability insurance and workers' compensation — the CSLB does not require general liability, so always ask for a certificate and verify it independently.
- Is there a dollar threshold below which I don't need a licensed contractor in California?
- Yes. Projects where the combined cost of labor and materials is under $500 are exempt from the CSLB licensing requirement. However, this applies to the total project value — a contractor cannot split a larger job into smaller invoices to avoid the requirement. Specialty trade work such as electrical, plumbing, and HVAC requires a licensed tradesperson regardless of the dollar amount.
- Can I do my own home improvement work without a licensed contractor in California?
- Yes. Under the owner-builder exemption in B&P Code §7044, homeowners can build or improve their own residence without holding a contractor license. To qualify, you must own the property and intend to occupy it — not build for resale. If you sell the property within one year of completion, California law requires you to disclose the owner-builder work to the buyer. Using this exemption more than twice in three years triggers a legal presumption that you are operating as an unlicensed contractor.
- What license does a general contractor need in California?
- California has three license classes. Class A (General Engineering Contractor) covers large infrastructure work such as grading, paving, and earthwork. Class B (General Building Contractor) covers most residential and commercial construction involving at least two unrelated trades — this is the license most homeowners encounter. Class C covers 44 specialty trades including electrical (C-10), plumbing (C-36), HVAC (C-20), and roofing (C-39). A Class B contractor can self-perform multiple trades on a single project; a Class C contractor is limited to their specific specialty.
- How do I verify a contractor's license in California?
- Use the CSLB License Check at cslb.ca.gov. Enter the contractor's name, business name, or license number. Confirm the license status is Active — not inactive, suspended, or expired — that the classification matches your project type, and that bond and workers' compensation coverage are current. The CSLB record also shows any disciplinary actions, citations, or judgments against the contractor; review these before signing anything.
- What does an active vs. inactive license mean in California?
- An Active license means the contractor is in good standing with the CSLB and legally permitted to work. An Inactive license means the license exists but the contractor cannot legally perform work — most often because their bond or workers' compensation insurance has lapsed. From a homeowner's perspective, an inactive license provides no more legal protection than no license at all. Always verify Active status immediately before hiring, not just when you first look them up.
- What insurance and bond does a licensed contractor need in California?
- Every CSLB-licensed contractor is required to carry a $25,000 Contractor's License Bond. Contractors with employees must also maintain workers' compensation insurance; those with no employees can file a Certificate of Exemption with the CSLB. The CSLB does not require general liability insurance, but you should always ask for a certificate of insurance, verify it directly with the insurer, and confirm it covers the full duration of your project.
- What happens if a contractor works without a license in California?
- Performing work over $500 without a CSLB license is a misdemeanor under B&P Code §7028, punishable by fines up to $5,000 and up to six months in jail. Under B&P Code §7031, an unlicensed contractor cannot sue to collect payment — even if the work was fully completed. A homeowner can also sue to recover all money already paid to an unlicensed contractor under the disgorgement provision in §7031(b), even after the project is finished. This protection only applies if the homeowner did not knowingly hire an unlicensed contractor.
- My contractor's license expired mid-project — what now?
- Once a CSLB license expires, the contractor is legally unlicensed for any work performed after the expiration date — the same rules as hiring an unlicensed contractor apply. Stop payments for work completed after the expiration date and ask the contractor to reinstate their license before continuing. Reinstatement can be verified on the CSLB License Check tool; the status must return to Active. If the contractor refuses or cannot reinstate, you may have grounds to recover payments for post-expiration work under B&P Code §7031.
- Am I liable if an unlicensed worker gets hurt on my property in California?
- Potentially yes. If an unlicensed contractor has no workers' compensation insurance and an employee is injured on your property, California law can treat the homeowner as the de facto employer — making you responsible for medical expenses and disability payments. This risk is eliminated when you hire a CSLB-licensed contractor: licensed contractors with employees are required to carry workers' comp, and you can verify current coverage on the CSLB lookup before work begins.
- How do I file a complaint against a contractor in California?
- File online with the CSLB at cslb.ca.gov/Consumers/Filing_A_Complaint/ or by calling 1-800-321-CSLB (2752). The CSLB can investigate, issue citations, suspend or revoke licenses, and order restitution against licensed contractors. For complaints involving unlicensed contractors, the CSLB's Statewide Investigative Fraud Team (SWIFT) handles enforcement. File as soon as possible — delays can affect your options, particularly for bond claims.