From Consumer Wiki
The California Department of Consumer Affairs, California Architects Board (CAB), administers exams, licenses, and regulates architects. Complaint responsibility includes competence in construction or structural design of a building and practicing without a license.
Department of Consumer Affairs
California Architects Board 2420 Del Paso Road, 1st Floor, Suite 105
(916) 574-7284 (fax)
Publications available: Consumer's Guide to Hiring an Architect