(1) to refuse to sell, rent, or lease or to offer for sale, rental, or lease any real property to any person or group of persons or to negotiate for the sale, rental, or lease of any real property to any person or group of persons because of race, color, creed, religion, national origin, sex, gender identity, marital status, status with regard to public assistance, disability, sexual orientation, or familial status or represent that real property is not available for inspection, sale, rental, or lease when in fact it is so available, or otherwise deny or withhold any real property or any facilities of real property to or from any person or group of persons because of race, color, creed, religion, national origin, sex, gender identity, marital status, status with regard to public assistance, disability, sexual orientation, or familial status; or