N.D. Cent. Code § 54-21.3-07
The manufacturer of a modular residential or commercial structure that is built in a factory shall contract with a third party for the inspection of the structure for compliance with all applicable building, electrical, fire, and plumbing codes and standards during the manufacturing process in the factory. A third party that conducts inspections and certifies compliance with all applicable codes and standards must be approved as a certified third-party inspector by the division of community services. The department of commerce shall adopt rules for the certification of inspectors and for the procedures to be followed in conducting inspections of modular residential and commercial structures. When a manufacturer of modular residential or commercial structures contracts with a certified third-party inspector to monitor compliance with all applicable building, electrical, fire, and plumbing codes and standards for a modular residential or commercial structure, no further inspection by state or local building, electrical, fire, or plumbing inspectors may be required for that structure during the manufacturing process in the factory. This section does not apply to a factory manufacturing fewer than two residential or commercial structures per year.
N.D.C.C. § 54-21.3-07