California Department of Consumer Affairs Bureau of Investigative Services
is the governing board that regulates locksmiths and issues licenses for a locksmith to operate in California. Anyone working as a locksmith or operating a locksmith service must be licensed by BSIS. A license must be issued in the name of any business or DBA. If a locksmith has more than one DBA they must have a valid license for each DBA. The license number must appear on all marketing materials, advertisements, etc.
You can check to see if a person or business holds a valid license by clicking on these links