California Swap Meet and Flea Market Operator Guidelines: Compliance with State Law (Publication 111)

• Operators of swap meets, flea markets, or special events in California must keep written records of all sellers and obtain certain information from them, including their business name, mailing address, telephone number, driver’s license or state-issued ID, description of items sold, and seller’s permit number. If the seller is not required to hold a seller’s permit, they must provide a reason.

Source: cdtfa.ca.gov

Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.