N.D. Cent. Code § 18-01-16
An order of abatement must be in writing and must state concisely the grounds upon which it is based. It must be made against the owner, lessee, or occupant of the building or premises therein described and must be served personally or by registered or certified mail upon the person therein named or that person's agent. If the owner of such premises is not a resident of this state, and if such premises are unoccupied, or if the owner of the premises has no known address, the order of abatement must be served by the publication of the same for three successive weeks in the official newspaper of the county in which the premises described in the order are situated, and the order must be deemed to have been served upon the date of the last publication.
N.D.C.C. § 18-01-16