N.D. Cent. Code § 47-04-30: Covenants running with the land - Apportionment of benefit or burden

When several persons, holding by several titles, are subject to the burden or are entitled to the benefit of a covenant running with the land, it must be apportioned among them according to the value of the property subject to it held by them respectively, if such value can be ascertained, and if not, then according to their respective interests in point of quantity.