Ala. Code § 40-7-65

The Department of Revenue may, with the approval of the Governor, employ any appraisal firms employing a duly accredited member or members of the American Institute of Real Estate Appraisers as consultants to inspect the various systems of assessing in each county and to advise the Department of Revenue of the best procedures to be followed in the several counties so as to expedite the statewide reappraisal as required by law; provided, that any firms or appraisers hired by the state Department of Revenue or by local government shall be bona fide residents of the State of Alabama and shall have resided in the state for at least one year prior to January 19, 1972.