Tex. Civil Practice and Remedies Code § 15.0115: LANDLORD-TENANT.

(a) Except as provided by another statute prescribing mandatory venue, a suit between a landlord and a tenant arising under a lease shall be brought in the county in which all or a part of the real property is located.

(b) In this section, "lease" means any written or oral agreement between a landlord and a tenant that establishes or modifies the terms, conditions, or other provisions relating to the use and occupancy of the real property that is the subject of the agreement.

Added by Acts 1995, 74th Leg., ch. 138, Sec. 2, eff. Aug. 28, 1995.