California contractor license reciprocity
California has reciprocity with Arizona, Louisiana, Mississippi, Nevada and North Carolina. It can waive the trade exam. (source: CSLB: Reciprocity (opens in a new tab))
Check a license on the CSLB website (official site, opens in a new tab)
How: Search by license number (digits only), business name or person name. For "John Smith Construction" type "Smith John Con". (source: CSLB Check a License (opens in a new tab))
Checked against official Contractors State License Board sources. See sources.
Reciprocity (license transfer)
- Arizona: Reciprocity agreement with CSLB. (source: CSLB: Reciprocity (opens in a new tab))
- Louisiana: Reciprocity agreement with CSLB. (source: CSLB: Reciprocity (opens in a new tab))
- Mississippi: Reciprocity agreement with CSLB. (source: CSLB: Reciprocity (opens in a new tab))
- Nevada: Reciprocity agreement with CSLB. (source: CSLB: Reciprocity (opens in a new tab))
- North Carolina: Reciprocity agreement with CSLB. (source: CSLB: Reciprocity (opens in a new tab))
- Reciprocity can waive the trade exam. The Law and Business exam is still required unless you passed it in the last 5 years. (source: CSLB: Application for original license (waiver) (opens in a new tab))
Sources and last verified
Last verified: . Next check due: . Every fact on this page links to one of these official pages.
- CSLB Check a License (opens in a new tab) (checked Oct 24, 2026)
- CSLB industry bulletin: AB 2622 implementation (opens in a new tab) (checked Oct 24, 2026)
- AB 2622 (Business and Professions Code 7048) (opens in a new tab) (checked Oct 24, 2026)
- CSLB "What You Should Know" pamphlet (older, says $500) (opens in a new tab) (checked Oct 24, 2026)
- CSLB Licensing Classifications (opens in a new tab) (checked Oct 24, 2026)
- CSLB: Before applying for a license (opens in a new tab) (checked Oct 24, 2026)
- CSLB: Experience for the exam (opens in a new tab) (checked Oct 24, 2026)
- CSLB: Applicants (opens in a new tab) (checked Oct 24, 2026)
- CSLB Fees (opens in a new tab) (checked Oct 24, 2026)
- CSLB: Qualifying for waivers (opens in a new tab) (checked Oct 24, 2026)
- Business and Professions Code 7065.1 (opens in a new tab) (checked Oct 24, 2026)
- CSLB: General renewal information (opens in a new tab) (checked Oct 24, 2026)
- CSLB: Bond requirements (opens in a new tab) (checked Oct 24, 2026)
- CSLB: Bond basics (opens in a new tab) (checked Oct 24, 2026)
- CSLB: Finding the right contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB: Contracts and binding agreements (opens in a new tab) (checked Oct 24, 2026)
- CSLB: Workers' compensation (opens in a new tab) (checked Oct 24, 2026)
- CSLB: LLC information (opens in a new tab) (checked Oct 24, 2026)
- CSLB: Before applying for HIS registration (opens in a new tab) (checked Oct 24, 2026)
- Business and Professions Code 7152 (opens in a new tab) (checked Oct 24, 2026)
- CSLB: Reciprocity (opens in a new tab) (checked Oct 24, 2026)
- CSLB: Application for original license (waiver) (opens in a new tab) (checked Oct 24, 2026)
- Business and Professions Code 7028 (opens in a new tab) (checked Oct 24, 2026)
- CSLB: After you file your complaint (opens in a new tab) (checked Oct 24, 2026)
- CSLB: Filing a complaint (opens in a new tab) (checked Oct 24, 2026)
- DIR Electrician Certification FAQ (opens in a new tab) (checked Oct 24, 2026)
- DIR electrician certification categories (opens in a new tab) (checked Oct 24, 2026)
- California Labor Code 108.2 (opens in a new tab) (checked Oct 24, 2026)
- EPA Section 608 technician certification (opens in a new tab) (checked Oct 24, 2026)
- 40 CFR Part 82 Subpart F (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: A General Engineering Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: B General Building Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: B-2 Residential Remodeling Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-2 Insulation and Acoustical Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-4 Boiler, Hot Water Heating and Steam Fitting Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-5 Framing and Rough Carpentry Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-6 Cabinet, Millwork and Finish Carpentry Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-7 Low Voltage Systems Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-8 Concrete Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-9 Drywall Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-10 Electrical Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-11 Elevator Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-12 Earthwork and Paving Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-13 Fencing Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-15 Flooring and Floor Covering Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-16 Fire Protection Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-17 Glazing Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-20 Warm-Air Heating, Ventilating and Air-Conditioning Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-21 Building Moving/Demolition Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-22 Asbestos Abatement Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-23 Ornamental Metal Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-27 Landscaping Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-28 Lock and Security Equipment Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-29 Masonry Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-31 Construction Zone Traffic Control Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-32 Parking and Highway Improvement Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-33 Painting and Decorating Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-34 Pipeline Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-35 Lathing and Plastering Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-36 Plumbing Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-38 Refrigeration Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-39 Roofing Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-42 Sanitation System Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-43 Sheet Metal Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-45 Sign Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-46 Solar Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-47 General Manufactured Housing Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-49 Tree and Palm Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-50 Reinforcing Steel Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-51 Structural Steel Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-53 Swimming Pool Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-54 Ceramic and Mosaic Tile Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-55 Water Conditioning Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-57 Well Drilling Contractor (opens in a new tab) (checked Oct 24, 2026)
- CSLB class description: C-60 Welding Contractor (opens in a new tab) (checked Oct 24, 2026)
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