S.C. Code Ann. § 23-43-80: Certification by South Carolina Building Codes Council.

Modular buildings must be certified by the council, as complying with this chapter and the regulations promulgated by authority of this chapter, if they have been manufactured in accordance with approved building systems and passed inspection in accordance with an approved compliance assurance program in Section 23-43-90. Certification is evidenced by the attachment to each modular building, a label issued by the council. Certification labels can only be attached to a modular building by the manufacturer under the supervision of the approved inspection agency. A certified modular building may not be altered in any way prior to the issuance of all permits required by local government without the council's approval.