N.C. Gen. Stat. § 143-151.1

The State Fire Marshal may initiate any appropriate action or proceeding to prevent, restrain, or correct any violation of the Act, this Article, or any rules adopted under this Article. The State Fire Marshal, or any of his deputies or employees, upon showing proper credentials and in the discharge of their duties under this Article, or the Act, is authorized at reasonable hours and without advance notice to enter and inspect all factories, warehouses, or establishments in this State in which manufactured homes are manufactured, stored or held for sale.