The board of county commissioners may, upon the recommendation of the assessor, appoint one or more assistant assessors. The board may delegate to assistant assessors appointed under this section responsibility for the appraisal of real  property, the listing and appraisal of business property, or such other duties as the board deems advisable. Pursuant to Article VI, Sec. 9, of the North Carolina Constitution, the office of assistant assessor is hereby declared to be an office that may be held concurrently with any other appointive office. (1939, c. 310, s. 409; 1955, c. 866; 1963, c. 625; 1967, cc. 59, 293; 1971, c. 802, s. 11; c. 806, s. 1; 1987, c. 45, s. 1.)