(a) A person certified or licensed under this chapter may not sign or endorse an appraisal unless the appraisal is substantially produced by that person.
(b) For purposes of this section, an appraisal is substantially produced by a person who contributes in a material and verifiable manner to the research or analysis that results in the final opinion of value expressed in the appraisal.
Official text of the Texas Occupations Code as published by the Texas Legislative Council.