North Carolina General Statutes Chapter 153A. Counties § 153A-122. Territorial jurisdiction of county ordinances

(a) Except as otherwise provided in this Article, the board of commissioners may make any ordinance adopted pursuant to this Article applicable to any part of the county not within a city.

(b) The governing board of a city may by resolution permit a county ordinance adopted pursuant to this Article to be applicable within the city. In the resolution permitting the county ordinance to be applicable within the city, the governing board of the city may specify that any signage required by the county ordinance be in compliance with city ordinances. The city may by resolution withdraw its permission to such an ordinance. If it does so, the city shall give written notice to the county of its withdrawal of permission; 30 days after the day the county receives this notice the county ordinance ceases to be applicable within the city.