N.D. Cent. Code § 57-02-41
All taxes, as between vendor and purchaser, become a lien on real estate on and after the first day of January following the year for which such taxes were levied. If taxable real property is acquired in any year after the assessment date by an owner in whose hands it will be exempt from taxation, the taxes on it for the portion of the year that it was not exempt, computed to the nearest month, constitute a personal charge against the person from whom it was acquired and all of the provisions of law for payment and collection of personal property taxes are applicable to such prorated taxes.
If exempt real property is acquired in any year after the assessment date by an owner in whose hands it is taxable, it must be assessed as omitted property and the taxes on it for that portion of the year that it is not exempt, computed to the nearest month, are subject to all of the provisions for payment and collection that are applicable to taxes for the same year on other real property.
N.D.C.C. § 57-02-41