Tex. Finance Code § 351.009

(a) To discover a violation of this chapter or Section 32.06 or 32.065, Tax Code, or to obtain information required under this chapter or Section 32.06 or 32.065, Tax Code, the commissioner or the commissioner's representative may investigate the records, including books, accounts, papers, and correspondence, of a person, including a property tax lender, who the commissioner or the representative has reasonable cause to believe is violating this chapter or Section 32.06 or 32.065, Tax Code, regardless of whether the person claims to not be subject to this chapter or Section 32.06 or 32.065, Tax Code.

(b) For the purposes of this section, a person who advertises, solicits, or otherwise represents that the person is willing to make a property tax loan is presumed to be engaged in the business described by Section 351.051.