N.D. Cent. Code § 23-10-02
The department shall have general supervision over the health, safety, sanitary condition, and legal compliance as outlined in this chapter of all mobile home parks, recreational vehicle parks, and campgrounds in this state and may promulgate and enforce appropriate rules and regulations in accordance with chapter 28-32. All mobile home parks, recreational vehicle parks, and campgrounds constructed after July 1, 1977, must be constructed in accordance with the requirements of this chapter and the rules and regulations promulgated at the time of construction. All mobile home parks, recreational vehicle parks, and campgrounds constructed before July 1, 1977, shall meet the requirements of this chapter by July 1, 1985. All mobile home parks, recreational vehicle parks, and campgrounds shall meet rules and regulations duly promulgated after construction of the park or campground within eight years after the effective date of the rule or regulation.
N.D.C.C. § 23-10-02