Tex. Nat. Res. Code § 51.171
(a) This subchapter controls the purchase and lease of vacant land and the authority of the commissioner and the board to:
Amended by Acts 2001, 77th Leg., ch. 1418, Sec. 1, eff. Sept. 1, 2001.
Acts 2005, 79th Leg., Ch. 874 (S.B. 1103), Sec. 1, eff. June 17, 2005.