N.C. Gen. Stat. § 160A-348

A city may by ordinance adopt rules and regulations concerning the opening of graves, the erection of tombstones and monuments, the building of walls and fences, the hours of opening and closing and all other matters concerning the use, operation, and maintenance of city cemeteries. The ordinance may impose a schedule of prices for lots and fees for the opening of graves in the cemetery, but it may not require the owners of plots to purchase monuments, vaults, or other items from the city.