Texas Property Code - PROP § 1.004. Preemption

(a) Unless expressly authorized by another statute, a municipality or county may not adopt, enforce, or maintain an ordinance, order, or rule regulating conduct in a field of regulation that is occupied by a provision of this code.  An ordinance, order, or rule that violates this section is void, unenforceable, and inconsistent with this code.

(b) For purposes of Subsection (a), a field occupied by a provision of this code includes an ordinance, order, or rule regulating evictions or otherwise prohibiting, restricting, or delaying delivery of a notice to vacate or filing a suit to recover possession of the premises under Chapter 24.