Who Pays for a Fence Between Two Properties in Idaho?

What the statute says

Idaho has an actual procedure for this, and almost nobody knows it exists.

Idaho Code 35-103 covers the cost of a partition fence between adjoining landowners. In outline:

1. One owner serves the other with written notice requiring them to build their portion of the boundary fence.
2. The neighbour has six months to do it.
3. If they do not, the notifying owner may build the entire fence and recover half the cost by suit.
4. A lien attaches to the neighbour’s property for that recovered amount.

That last point is the part with teeth. It is not merely a personal debt — it encumbers the land.

What this does not mean

It does not mean your neighbour owes you half of whatever you decide to build.

The procedure is about a boundary fence, built on the line, of a reasonable and lawful kind. It is not a mechanism for billing the neighbour half of an ornamental steel fence because that is what you wanted. If you are relying on the statute, the fence you build should be a defensible boundary fence — and building to the Idaho Code 35-102 legal fence standard is the clearest way to demonstrate that.

It also does not skip the notice step. Building first and invoicing afterwards is the version that fails.

The practical route almost everyone takes

Talk to the neighbour. Agree the line, the material, the height, and the split. Put it in writing — even a signed one-page note with the date, the agreed share, and who is arranging the work.

The reason to write it down is not distrust. It is that properties sell. The neighbour who cheerfully agreed to split a fence in June may not own the place in September, and a verbal agreement does not survive a closing. A written note attached to both files does.

Two more things worth settling in the same conversation:

• Where the line actually is. Not where the old fence was, not where the hedge is. On older Rupert lots the survey pins are frequently gone. Locating them costs far less than moving a fence.
• Which side faces out. Convention in Idaho is finished side toward the neighbour and the street. It is courtesy rather than statute, but it is what buyers and appraisers expect. Board-on-board construction sidesteps the argument entirely by looking finished from both sides.

Once it is built, upkeep splits differently

Do not assume that paying half means maintaining half of whatever you like. Idaho has a separate and genuinely surprising rule for that: each owner maintains the half on their left when standing on their own land facing the neighbour’s. See who maintains a shared fence.

Bottom line

Idaho Code 35-103 gives you a real remedy — written notice, six months, then build and recover half with a lien attaching. Use it as the fallback. Start with a conversation and a written agreement, because that is what actually gets fences built between neighbours who still have to live next to each other.

Nothing here is legal advice. For a boundary dispute or anything involving a lien, talk to an Idaho attorney. For the fence itself, call (208) 732-2816.