California Code, Health and Safety Code - HSC § 18210.7

(a) “Manufactured housing community” means any area or tract of land where two or more manufactured home lots are rented or leased, held out for rent or lease, or were formerly held out for rent or lease and later converted to a subdivision, cooperative, condominium, or other form of resident ownership, only to accommodate the use of manufactured homes constructed pursuant to the National Manufactured Housing Construction and Safety Standards Act of 1974 (42 U.S.C. Sec. 5401 and following) or mobilehomes containing two or more dwelling units for human habitation. The rental paid for a manufactured home shall be deemed to include rental for the lot it occupies.

(b) Notwithstanding subdivision (a), an area or tract of land zoned for agricultural purposes where two or more manufactured home lots are rented or leased, held out for rent or lease, or provided as a term or condition of employment to accommodate manufactured homes or mobilehomes used for the purpose of housing 12 or fewer agricultural employees, shall not be deemed a manufactured housing community.

(c) Notwithstanding subdivision (a), an area or tract of land shall not be deemed a mobilehome park if the structures on it consist of residential structures that are rented or leased, or held out for rent or lease, if those residential structures meet both of the following requirements: