40 Tex. Admin. Code §§ 819.121–819.136 § 819.125

(a) It is unlawful to discriminate based on race, color, disability, religion, sex, national origin, or familial status by making, printing, or publishing, or causing to be made, printed, or published, any notice, statement, or advertisement with respect to the sale or rental of a dwelling that indicates any preference, limitation, or discrimination, or an intention to make any such preference, limitation, or discrimination. (b) The prohibitions in this section shall apply to all written or oral notices or statements by a person engaged in the sale or rental of a dwelling. Written notices and statements include any applications, flyers, brochures, deeds, signs, banners, posters, billboards, electronic communications, or any documents used with respect to the sale or rental of a dwelling. (c) Discriminatory notices, statements, and advertisements include, but are not limited to: (1) using words, phrases, photographs, illustrations, symbols, or forms that convey that dwellings are available or not available to a particular group of individuals based on race, color, disability, religion, sex, national origin, or familial status; (2) expressing to agents, brokers, employees, prospective sellers or renters, or any other individuals a preference for or limitation on any potential buyer or renter based on race, color, disability, religion, sex, national origin, or familial status; (3) selecting media or locations for advertising the sale or rental of dwellings that deny particular segments of the housing market information about housing opportunities based on race, color, disability, religion, sex, national origin, or familial status; and (4) refusing to publish advertising for the sale or rental of dwellings or requiring different charges or terms for such advertising based on race, color, disability, religion, sex, national origin, or familial status.