Cal. Civil Code § 782

(a) Any provision in any deed of real property in California, whether executed before or after the effective date of this section, that purports to restrict the right of any persons to sell, lease, rent, use, or occupy the property to persons having any characteristic listed in subdivision (a) or (d) of Section 12955 of the Government Code, as those bases are defined in Sections 12926, 12926.1, subdivision (m) and paragraph (1) of subdivision (p) of Section 12955 and Section 12955.2 of the Government Code, by providing for payment of a penalty, forfeiture, reverter, or otherwise, is void. (b) Notwithstanding subdivision (a), with respect to familial status, subdivision (a) shall not be construed to apply to housing for older persons, as defined in Section 12955.9 of the Government Code. With respect to familial status, nothing in subdivision (a) shall be construed to affect Sections 51.2, 51.3, 51.4, 51.10, 51.11, and 799.5 of this code, relating to housing for senior citizens. Subdivision (d) of Section 51, Section 4760, and Section 6714 of this code, and subdivisions (n), (o), and (p) of Section 12955 of the Government Code shall apply to subdivision (a).