From Consumer Wiki
Operating a business requires either a city or county license. Individuals seeking to operate a business must apply to the office having jurisdiction over the zone where the individual resides when outside the city or county.
Information regarding business licenses and permits is available at the Calgold web-site:
The California License Handbook and California Permit Handbook are now available on-line only:
The California License Handbook is reference point to identify State requirements. State agencies, departments, and offices responsible for processing and monitoring State mandated licensing requirements are included with contact information.