N.D. Cent. Code § 51-04-09
Nothing in this chapter may be construed as prohibiting, or in any way limiting or interfering with, the right of any city or other municipal corporation or governmental subdivision of the state to regulate or license the carrying on within such municipality the business of a transient merchant if authority has been, or shall hereafter be, conferred upon it so to do, but the requirements of this chapter are in addition thereto. The governing body of a city or other municipal corporation or governmental subdivision, by resolution, ordinance, or order, may require transient merchants licensed under this chapter and making or intending to make sales within the city limits to comply with any reasonable regulations, in addition to this chapter, as that body may deem necessary for their local control and may require the payment by every such merchant of a per diem license fee not exceeding twenty-five dollars. Every such merchant making sales or offering to do so without complying with the regulations applicable to transient merchants is subject to the penalty provided as if no state license had been issued by the attorney general.
N.D.C.C. § 51-04-09