Texas Property Code - PROP § 24.004. Jurisdiction; Dismissal

(a) Except as provided by Subsection (b), a justice court in the precinct in which the real property is located has jurisdiction in eviction suits. Eviction suits include forcible entry and detainer and forcible detainer suits. A justice court has jurisdiction to issue a writ of possession under Sections 24.0054(a), (a-2), and (a-3).

(b) A justice court does not have jurisdiction in a forcible entry and detainer or forcible detainer suit and shall dismiss the suit if the defendant files a sworn statement alleging the suit is based on a deed executed in violation of Chapter 21A, Business & Commerce Code.