N.D. Cent. Code § 47-26-16
When unenclosed ground is enclosed, the owner or occupant thereof shall pay one-half of the value of each partition fence standing upon the line between that person's land and the enclosure of any other owner or occupant. If the parties do not agree on the value of the fence, it shall be ascertained by a majority of the proper fence viewers. Such determination shall be in writing and shall be signed by a majority of the fence viewers. If the owner of the unenclosed land refuses or neglects to pay for one-half of the value of the partition fence within sixty days after the value of the fence has been ascertained and demand made, the proprietor of the fence may maintain a civil action for such value and the cost of ascertaining the same.
N.D.C.C. § 47-26-16