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Instant License Check

Enter the contractor license number:




Don't know the license number? Click Here


Find My Licensed Contractor

Need help in finding a contractor? You can now create your own specialized list of licensed contractors in your area.




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 44 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.

To quickly access one of CSLB’s Easy-Fill Forms, select from the buttons below:

Connect with Us Icon Connect With Us:

Instant License Check

Enter the contractor license number:





Don't know the license number? Click Here

Find My Licensed Contractor

Need help in finding a contractor? You can now create your own specialized list of licensed contractors in your area.




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