The tax commissioner shall develop, or cause to be developed, appraisal manuals for all species of property, for use in making statewide reappraisals. These manuals shall be used by the tax commissioner, county assessors, county commissions, the board of public works and any property appraisal firm or firms employed to assist in making statewide reappraisals. These manuals shall, at a minimum:
W. Va. Code § 11-1A-24