Texas Local Government Code - LOC GOV'T § 352.018. Effect on Civil Actions

(a) An action taken by a county fire marshal in the investigation of a fire does not affect the rights of a policyholder or of any company regarding a loss caused by the fire.

(b) The result of an investigation by the county fire marshal of a fire may not be admitted in evidence in the trial of a civil action brought under the insurance policy.

(c) The statement of an insurance company, the company's officers, agents, or adjusters, or of a policyholder or the policyholder's representative, that is made to the county fire marshal or his representative with respect to the origin or cause or supposed origin or cause of the fire may not be admitted in evidence in or made the basis of a civil action for damages.