(a) It shall be unlawful for any person or other entity whose business includes engaging in the selling, brokering or appraising of residential real property to discriminate against any person in making available such services, or in the performance of such services, because of race, color, religion, sex, handicap, familial status, or national origin.

(b) For the purposes of this section, the term appraisal means an estimate or opinion of the value of a specified residential real property made in a business context in connection with the sale, rental, financing or refinancing of a dwelling or in connection with any activity that otherwise affects the availability of a residential real estate-related transaction, whether the appraisal is oral or written, or transmitted formally or informally. The appraisal includes all written comments and other documents submitted as support for the estimate or opinion of value.

(c) Nothing in this section prohibits a person engaged in the business of making or furnishing appraisals of residential real property from taking into consideration factors other than race, color, religion, sex, handicap, familial status, or national origin.

(d) Practices which are unlawful under this section include, but are not limited to: