22 Tex. Admin. Code § 1.213
Architectural construction documents for any alteration or addition to an existing building involving structural changes which require the professional services of a registered professional engineer in accordance with Texas Civil Statutes, Article 3271a, the Texas Engineering Practice Act, or which involve exitway changes affecting the building's egress by more than 50 building occupants shall be prepared under the supervision of an architect unless excepted in accordance with §1.211 of this title (relating to Privately Owned Buildings).
Source Note:The provisions of this §1.213 adopted to be effective March 16, 1990, 15 TexReg 1151; amended to be effective April 4, 2000, 25 TexReg 2810.