N.D. Cent. Code § 43-07-24

When applying for a building permit, a contractor shall supply the permit issuing official that contractor's license number. That official shall enter those numbers on the permit. A person performing general contractor's work on that person's own property, even if exempt from the licensing requirements of this chapter, shall, when applying for a building permit, supply the building permit issuing official the license number, as soon as available, of each subcontractor engaged on the project and doing work covered by the permit. That official shall enter each number so supplied before inspection of the work.