The Department of Revenue shall prescribe procedures and shall set standards for the work to be done under this program. Any contract for services required by a county pursuant to the appraisal of property under this division shall be approved by the Department of Revenue, and the work required to be performed shall not be considered finished until the standards of work applied and performed have been inspected and approved by the Department of Revenue.
Ala. Code § 40-7-61 (1975)