From Consumer Wiki
There are no requirements to be licensed as an auctioneer or auction company in California. However, auction companies and auctioneers will need to obtain the proper business license and are required to have a $20,000 bond on file with the California Secretary of State. The Secretary of State's bond filing fee is $30.00.
The California Department of Insurance, Licensing Section, provides information about companies that are licensed in California to sell surety bonds.
Business license information should be obtained from local city or county offices (i.e. the City Revenue Division or Business License and Fictitious Business Names Units). Complaints about auction-related matters should be referred to the local District Attorney.
Secretary of State
Special Filings and Trademark Unit
1500 11th Street, 2nd Floor,
Sacramento, CA 95814