Cal. Business and Professions Code § 21669

(a) All swap meets which are conducted two or more times per calendar year on any premises or property owned or leased by any city, county, city and county, state, or any other local governmental agency, entity, or board, shall comply with all of the following procedures: (1) The swap meet operator shall have a valid business license. (2) The swap meet operator shall have a valid California seller’s permit number (State Board of Equalization sales tax number), if applicable. (3) The swap meet operator shall provide the state or local governmental entities described in this subdivision upon whose property the swap meet is being held, a certificate of insurance certifying that the swap meet operator maintains public liability and property damage insurance for the operation of the swap meet of at least two million dollars ($2,000,000), and that the policy names that governmental entity as an additional insured under the policy. (4) The swap meet operator shall provide the state or local governmental entity a hold harmless and idemnification agreement for his or her operation of the swap meet and activities and acts arising from that swap meet. (5) The swap meet operator shall comply with all other provisions of this article relating to swap meets. (b) State or local governmental entities shall not operate or manage a swap meet for profit in direct competition to a private enterprise, unless they comply with subdivision (a) of Section 21662.