22 Tex. Admin. Code § 155.1
An appraisal performed by a person subject to the Texas Appraiser Licensing and Certification Act must conform with the "Uniform Standards of Professional Appraisal Practice" (USPAP) of the Appraisal Foundation in effect at the time of the appraisal.
Source Note:The provisions of this §155.1 adopted to be effective March 2, 1992, 17 TexReg 1232; amended to be effective March 1, 1997, 22 TexReg 1718.