N.C. Gen. Stat. § 136-131.2

No municipality, county, local or regional zoning authority, or other political subdivision shall, without the payment of just compensation as provided for in G.S. 136-131.1, regulate or prohibit the repair or reconstruction of any outdoor advertising for which there is in effect a valid permit issued by the Department of Transportation so long as the square footage of its advertising surface area is not increased. As used in this section, reconstruction includes the changing of an existing multipole outdoor advertising structure to a new monopole structure.