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Instant License Check

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Welcome to 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 290,000 contractors in 43 different license classifications.

Our online services and information are organized into the following categories:

Click on one of the above links or view our “Popular Pages.” Visit “Instant License Check” to learn whether a contractor license is in good standing with CSLB.

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