The Contractors State License Board (CSLB) protects consumers by licensing and regulating California's construction industry. There are more than 316,000 licensed contractors in the state, in 43 different licensing classifications. The CSLB administers examinations to test prospective licensees, issues licenses and investigates complaints against licensed and unlicensed contractors.
You can check the status of a contractor's license here.
SDair holds a license in several classifications. Our Contractor's License number is 955533, and may be checked via the link listed above.
We have the following classifications on our license
- B - General Contractor
- C20 - Warm Air Heating, Ventilating, and Air Conditioning
- C38 - Refrigeration


















