11-28-106. Construction and maintenance of partition fences.
(a) Except as otherwise provided, the owner of any lawful fence which is or becomes a partition fence separating the owner's land from that belonging to some other person may require the person to pay for one-half (1/2) of what it would or does actually cost to construct the partition fence. In case of refusal, the owner may maintain a civil action against the person refusing and is entitled to recover one-half (1/2) of what it would or did actually cost to construct that portion of the partition fence used by the person and costs of suit. The joint users of a partition fence shall contribute to the cost of maintenance in proportion to their respective interests and if either refuses to pay his share of the cost of maintenance, the other may recover maintenance costs in the manner provided for recovering the cost of construction.
(b) For subdivisions as defined in W.S. 18-5-302(a)(vii), the subdivider shall be responsible for the construction of a perimeter partition fence on any part of the subdivision adjacent to lands upon which livestock can be legally run at large. The costs of the perimeter partition fence shall be paid for by the parties in accordance with subsection (a) of this section. The adjoining landowner shall not be liable for any damages caused by, or arising from, livestock pastured on the adjoining land that may wander onto the subdivided land.