Cal. Health & Safety Code § 114367

The governing body of a city, county, or city and county that is designated as the enforcement agency, as defined in Section 113773, may authorize, by ordinance or resolution, within its jurisdiction the permitting of microenterprise home kitchen operations in accordance with this chapter. If a governing body of a city, county, or city and county authorizes the permitting of microenterprise home kitchen operations, the authorization shall apply to all areas within its jurisdiction, including being applicable to all cities within a county that authorizes microenterprise home kitchen operations, regardless of whether each city located within the jurisdiction of the county separately authorizes them.