§20–707.

    (a)    In this section, “residential real estate–related transaction” means:

        (1)    the making or purchasing of loans or providing other financial assistance:

            (i)    for purchasing, constructing, improving, repairing, or maintaining a dwelling; or

            (ii)    secured by residential real estate; or

        (2)    the selling, brokering, or appraising of residential real property.

    (b)    (1)    A person whose business includes engaging in residential real estate–related transactions may not discriminate against any person in making available a transaction, or in the terms or conditions of a transaction, because of race, color, religion, sex, disability, marital status, familial status, sexual orientation, gender identity, national origin, or source of income.

        (2)    Paragraph (1) of this subsection does not prohibit a person engaged in the business of furnishing appraisals of real property from taking into consideration factors other than race, color, religion, sex, disability, marital status, familial status, sexual orientation, gender identity, national origin, or source of income.

    (c)    A person may not, because of race, color, religion, sex, disability, marital status, familial status, sexual orientation, gender identity, national origin, or source of income:

        (1)    deny a person access to, or membership or participation in, a multiple–listing service, real estate brokers’ organization, or other service, organization, or facility relating to the business of selling or renting dwellings; or

        (2)    discriminate against a person in the terms or conditions of membership or participation.