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Welcome to the Contractors State License Board

The Contractors State License Board (CSLB) protects California consumers by licensing and regulating the state's construction industry. CSLB was established in 1929 and today licenses about 285,000 contractors in 45 different classifications.


Expedited Licensure Application Processing for Service Members Enrolled in Skillbridge

Home Improvement Payment Reminder

Contractors (including solar contractors) performing home improvement work or work in declared disaster areas may not accept more than 10% of the contract price or $1,000, whichever is less, as a down payment on a home improvement contract (including for a solar energy system). Except for this limited down payment, IT IS AGAINST THE LAW FOR A HOME IMPROVEMENT CONTRACTOR TO COLLECT PAYMENT FOR WORK NOT YET COMPLETED OR FOR MATERIALS NOT YET DELIVERED.

Solar Energy System Contracting Tips

If you’re considering installing a residential solar energy system, there is important information you need to consider so you can be “Solar Smart.” More details can be found on CSLB’s Solar Smart page.

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