One must read several statutes in some cases to get the full story for your state and county. The old rule of thumb was that when looking at the fence from your property you were responsible for the maintenance of the right half of the fence. That may or may not be written into a statute in your state. Here the owners are mutually liable for the upkeep of the entire fence to conform to what constitutes a legal fence. Many may discover the definition of a legal fence is not much of a fence compared to what they prefer. In fact, an electric fence can be a legal fence if constructed and maintained per the definition in the statute. I prefer a minimum of six wires with four barbs (not two) with the heavy weight steel posts having a minimum length of six feet with wooden posts (hedge in my neck of the woods) located at significant break points so as to secure the fence better and keep the wires somewhat parallel to the ground surface to the extent possible. Specially designed flood gates are to be installed where water may flow annually higher than the second wire from the bottom. What I have described far exceeds the definition of a legal fence here. I can only assess the neighbor for half the cost of construction a legal fence..
The statutes should lay out precisely who the designated fence viewers are to be and what their powers are in enforcing the continuous maintenance of a legal fence between neighbors. We have gained neighbors who are out-of-state hunters and land owners. Most like their property to be as wooly as possible. Removing an old fence and tree row to construct a modern fence is something they normally refuse to pay for and get away with it because they are not attempting to run livestock on their property. If the fence viewers were to go through the process and award a level of payment to the adjoining farmer/rancher, it can be added to their next property tax statement and recovered in that method so those funds can then be paid to the one building the fence, if necessary.
In CA they go as far as shared costs for the monuments as well as the fence.
CA Civil Code 841
(a) Adjoining landowners shall share equally in the responsibility for maintaining the boundaries and monuments between them.
(b) (1) Adjoining landowners are presumed to share an equal benefit from any fence dividing their properties and, unless otherwise agreed to by the parties in a written agreement, shall be presumed to be equally responsible for the reasonable costs of construction, maintenance, or necessary replacement of the fence.
It depends- on the agreement in place at the time the fence was constructed/ if any. If there was a RW purchase for the RW and the fence was a part of the agreement there should be a fence paragraph that talks about it. It might say that the fox is to become the responsibility of the land owner after installation.
Fx =fence in my world not so much in Autocorrect land
Wow, I had no idea any state would let me charge my neighbor for a fence I decided to build. That seems insane to me.