Permits and licensing · California
Renovation permits and contractor licences in California
California licenses contractors statewide through one body, the Contractors State License Board, which covers general building contractors and the specialty trades alike. State law exempts only small jobs, and never where a building permit is required. The Building Standards Commission publishes the Title 24 code, and every city or county building department enforces it and issues the permits.
Regulators and licensing bodies in California
These official bodies license contractors, oversee safety or issue permits in California.
Contractors State License Board (CSLB)
Protects California consumers by licensing and regulating the state's construction industry. It issues general engineering, general building, residential remodeling and specialty contractor licences.
California Building Standards Commission
Oversees development, adoption, approval, publication and implementation of California's building codes, published as Title 24 of the California Code of Regulations.
Trades that need a licence in California
General contracting and renovation
One state board licenses contractors in California. Licences are issued as general engineering (A), general building (B), residential remodeling (B-2) and specialty (C) classifications, and the classification has to match the work. Ask for the licence number and classification before you sign.
Sources:CSLB – Licensing classifications(opens in a new tab)Contractors State License Board (CSLB)(opens in a new tab)
Certified trades
The individual trades are specialty (C) classifications under the same board, not separate licensing bodies as in some other states. A contractor may only take on work its classification covers.
Sources:CSLB – Licensing classifications(opens in a new tab)
General contracting and renovation
State law exempts only work that is casual, minor or inconsequential below a contract value set in statute, and the exemption does not apply where the work requires a building permit, where it is part of a larger operation, or where contracts are split to get around the rule.
Sources:California Business and Professions Code, section 7048 – Small operations(opens in a new tab)
Consumer protection
CSLB's licence check shows complaint disclosure alongside the licence details, so you can see a contractor's record before you hire.
Sources:CSLB – Check a license(opens in a new tab)CSLB – Hire a licensed contractor(opens in a new tab)
Building and renovation permits in California
The building department of every city or county enforces the State Building Standards Code within its jurisdiction, so permits come from your local building department, not from the state. The 2025 California Building Standards Code (Title 24) took effect on January 1, 2026 and runs to December 31, 2028; it has twelve parts, including the Building, Residential, Electrical, Plumbing, Mechanical, Energy and CALGreen codes.
Sources:California Health and Safety Code, section 17960 – Local enforcement(opens in a new tab)California Building Standards Commission – Codes(opens in a new tab)
Permit information from large municipalities
Before you hire a contractor in California
Practical checks you can do yourself, using official tools where they exist.
Check the contractor's licence with CSLB, including the complaint disclosure it shows.
Official lookup: CSLB – Check a license(opens in a new tab)
Make sure the licence classification covers the work you are hiring for.
Official lookup: CSLB – Licensing classifications(opens in a new tab)
Read CSLB's guidance on choosing a contractor and on what a contract should contain.
Official lookup: CSLB – Hire a licensed contractor(opens in a new tab)
Ask your city or county building department whether your project needs a permit before work starts.
Official lookup: California Health and Safety Code, section 17960 – Local enforcement(opens in a new tab)
Confirm the contractor's licence and insurance with your state or county government, and get the work, materials and price in writing.
Official lookup: FTC – How to avoid a home improvement scam(opens in a new tab)
Sources for renovation permits and licences in California
Every fact on this page comes from these official sources.
- Contractors State License Board (CSLB)(opens in a new tab)
- CSLB – Licensing classifications(opens in a new tab)
- California Building Standards Commission(opens in a new tab)
- California Building Standards Commission – Codes(opens in a new tab)
- California Business and Professions Code, section 7048 – Small operations(opens in a new tab)
- CSLB – Check a license(opens in a new tab)
- CSLB – Hire a licensed contractor(opens in a new tab)
- California Health and Safety Code, section 17960 – Local enforcement(opens in a new tab)
- FTC – How to avoid a home improvement scam(opens in a new tab)
Find licensed pros
Compare local pros for the regulated trades in this guide, then confirm their licence with the regulator before you hire.
Renovation permits in other states
- Alabama
- Alaska
- Arizona
- Arkansas
- Colorado
- Connecticut
- Delaware
- District of Columbia
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
Planning a renovation?
Describe your project once and hear from local pros. Ask each one for their licence and permit details before you hire.