Texas Tax Code - TAX § 41.67. Evidence

(a) A member of the appraisal review board may swear witnesses who testify in proceedings under this chapter. All testimony must be given under oath.

(b) Documentary evidence may be admitted in the form of a copy if the appraisal review board conducting the proceeding determines that the original document is not readily available. A party is entitled to an opportunity to compare a copy with the original document on request.

(c) Official notice may be taken of any fact judicially cognizable. A party is entitled to an opportunity to contest facts officially noticed.

(d) Information that was previously requested under Section 41.461 by the protesting party that was not delivered to the protesting party at least 14 days before the scheduled or postponed hearing may not be used or offered in any form as evidence in the hearing, including as a document or through argument or testimony. This subsection does not apply to information offered to rebut evidence or argument presented at the hearing by the protesting party or that party's designated agent.

(e) The chief appraiser may not offer evidence or argument at a hearing on a protest in support of a reason for modifying or denying an application other than a reason stated in a notice delivered to the applicant under Section 11.45(d) or (e), 23.44(d), 23.57(d), 23.79(d), 23.85(d), 23.95(d), or 23.9805(d) unless the chief appraiser: