Cal. Bus. & Prof. Code § 26032

(a) The actions of a licensee, its employees, and its agents are not unlawful under state law and shall not be an offense subject to arrest, prosecution, or other sanction under state law, or be subject to a civil fine or be a basis for seizure or forfeiture of assets under state law if they are all of the following:
1. (1) Permitted pursuant to a state license.
2. (2) Permitted pursuant to a local authorization, license, or permit issued by the local jurisdiction, if any.
3. (3) Conducted in accordance with the requirements of this division and regulations adopted pursuant to this division.
(b) The actions of a person who, in good faith, allows his or her property to be used by a licensee, its employees, and its agents, as permitted pursuant to a state license and, if required by the applicable local ordinances, a local license or permit, are not unlawful under state law and shall not be an offense subject to arrest, prosecution, or other sanction under state law, or be subject to a civil fine or be a basis for seizure or forfeiture of assets under state law.