Cal. Civ. Code § 910-2-8-6

Sec. 6. (a) In the investigation of complaints, the director will consider the implementation of fair housing policies and practices provided in this section as evidence of compliance with the prohibitions against discrimination in advertising under IC 22-9.5.
(b) All advertising of residential real estate for sale, rent, or financing should contain an equal housing opportunity logotype, statement, or slogan as a means of educating the home-seeking public that the property is available to all persons regardless of race, color, religion, sex, handicap, familial status, or national origin. The choice of logotype, statement, or slogan will depend on the type of media used (visual or auditory) and, in space advertising in regularly printed media such as newspapers or magazines, on the size of the advertisement. Section 7(b) of this rule provides suggested use of the logotype, statement, or slogan and size of the logotype. Section 7(c) of this rule contains examples of the suggested Equal Housing Opportunity logotype, statement, or slogan.
(c) Human models in photographs, drawings, or other graphic techniques may not be used to indicate exclusiveness because of race, color, religion, sex, handicap, familial status, or national origin. If models are used in display advertising campaigns, the models should be clearly definable as reasonably representing majority and minority groups in the metropolitan area, both sexes, and, when appropriate, families with children. Models, if used, should portray persons in an equal social setting and indicate to the general public that the housing is open to all without regard to race, color, religion, sex, handicap, familial status, or national origin, and is not for the exclusive use of one (1) such group.
(d) Where the Equal Housing Opportunity statement is used, the advertisement may also include a statement regarding the coverage of any federal or local fair housing or human rights ordinance prohibiting discrimination in the sale, rental, or financing of a dwelling.
(e) All publishers of advertisements, advertising agencies, and firms engaged in the sale, rental, or financing of real estate should provide a printed copy of their nondiscrimination policy to each employee and officer.
(f) All publishers of advertisements and advertising agencies shall:
(1) post a copy of their nondiscrimination policy in a conspicuous location wherever persons place advertising; and
(2) have copies available for all firms and persons using their advertising services.

(g) All publishers should publish at the beginning of the real estate advertising section a notice such as that appearing in section 7(d) of this rule. The notice may include a statement regarding the coverage of any local fair housing or human rights ordinance prohibiting discrimination in the sale, rental, or financing of a dwelling.