Updated Oct 2, 2026
How to check a California contractor's license
In California, contracting work needs a CSLB license unless the whole job is under $1,000, needs no building permit, and is done by someone who doesn't advertise as a contractor or hire help.
Look up the license
Enter the number from the quote, truck or website, or search by name. If they can't give you a number, that's your answer.
What does the status mean?
Does the class match the job?
C-36 is plumbing, C-20 is HVAC and C-10 is electrical. A B license is a general contractor who runs a whole remodel but usually subs out the trades. A roofer whose only class is C-33 (painting) is the wrong roofer.
Does the name match the business?
A license belongs to a person or a company. If the truck and the license show different names, ask why. It may be a DBA, or a borrowed license.
Check the bond and workers' comp
The record shows the bond ($25,000, required) and whether they carry workers' comp or claim an exemption for having no employees. A crew of four on an exemption is a red flag. If someone gets hurt on your property, it can become your problem.
What if something is off?
Ask the contractor first; there's usually a boring explanation. If there isn't, file a complaint with CSLB and don't sign until it's resolved.
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Sources
Contractors State License Board license check and classification pages, cslb.ca.gov, read Sep 30, 2026. Business and Professions Code §7048, the small-job exemption, as amended effective January 1, 2026, read on leginfo.legislature.ca.gov Oct 2, 2026. §7028 covers contracting without a license, and §7071.6 the $25,000 bond.