Cal. Bus. & Prof. Code § 21660
It is the intent of the Legislature in enacting this article to require the reporting of personal property exchanged, sold, or offered for sale or exchange at swap meets, flea markets, and open-air markets, and information regarding vendors selling or displaying new merchandise, for the purpose of ensuring that swap meet, open-air market, and flea market operators and vendors are in complete compliance with all state laws and regulations applicable to displaying, offering for sale, selling, and exchanging new and previously owned merchandise.
This article shall apply to operators and vendors at swap meets, flea markets, and open-air markets unless the merchandise or the transaction is specifically exempt under this article and shall not be superseded or supplanted by any provisions or ordinances or charters of any city, county, or city and county, nor supplemented by any local ordinances or charters or provisions. Nothing contained in this article shall be deemed to affect the land use and zoning regulatory power of a local agency, nor be construed to require any local agency to permit swap meets, flea markets, or open-air markets if local land use or zoning regulations prohibit those operations.
Any transaction that is regulated by this article shall not be subject to the provisions of Article 4 (commencing with Section 21625), regulating transactions in identifiable secondhand tangible personal property. No person, partnership, or corporation shall be considered a "secondhand dealer" within the meaning of Section 21626 because of activities regulated by this article.
Article 5 (commencing with Section 21650) of this chapter shall not apply to operators or vendors at swap meets, flea markets, or open-air markets.
Ca. Bus. and Prof'l. Code § 21660