Government Code §418.152

(a) Services or the taking or use of property shall be compensated only to the extent that: (1) the obligations recognized in this chapter are exceeded in a particular case; and (2) the claimant may not be considered to have volunteered services or property without compensation. (b) Personal services may not be compensated by the state or a subdivision or agency of the state except under statute or ordinance. (c) Compensation for property may be made only if the property was commandeered or otherwise used in coping with a disaster and its use or destruction was ordered by the governor or a member of the disaster forces of this state.