Fence laws in Idaho
What Idaho statutes and statewide codes say about fences, one topic at a time, with the section number and a link to the document behind every line.
Idaho fence laws at a glance
| Topic | What the record says | Figure | Citation |
|---|---|---|---|
| Fences on the property line | Stated | no figure | Idaho Code 35-103 |
| Fence height | Silent | no figure | Idaho Code 35-101 |
| Permits | Stated | no figure | Idaho Code 39-4109 |
| Pool barriers | Silent | no figure | IDAPA 16.02.14 |
| Spite fences | Silent | no figure | Idaho Code tit. 35, ch. 1 |
| How height is measured | Not researched yet | no figure | none |
| Corner visibility | Not researched yet | no figure | none |
| Retaining walls | Not researched yet | no figure | none |
| Materials | Not researched yet | no figure | none |
| Agricultural fencing | Stated | no figure | Idaho Code 25-2118 |
Fence laws in Idaho, question by question
Who owns the fence between two properties in Idaho?
StatedThe code gives a plain answer, and the line it appears on is quoted.
When Idaho neighbors share one enclosure and one of them needs a partition fence, the other has to build half of it once notified. The fence goes on the property line or as near to it as practical. If the notified party does not finish that half within six months of written notice, the party who gave notice may build the whole fence, recover half the cost by law, and hold a lien on the other tract.
And if, after notice given in writing, either party fails to erect and complete, within six (6) months time thereafter, one-half (1/2) of such fence, the party giving the notice may proceed to erect the entire partition fence and collect by law one-half the costs of such fence from the other party, and he has a lien upon the land thus partitioned.
Also on fences on the property line in Idaho
- StatedIdaho assigns each half of a line fence by a plain rule. Standing on his own land and facing the neighbor, each owner takes the half on his left, builds it and keeps it in repair. The two may agree to a different split. An owner who leaves his land unenclosed is not held to the duty. A party who strengthens the fence on his own bears that extra cost alone unless the neighbor later pastures hogs, sheep or goats against it. Idaho Code 35-104Idaho · Statute
- StatedIdaho gives neighbors who cannot agree on a division fence split a path through the courts. Either party may ask a magistrate judge to appoint three viewers, on five days notice. The viewers may examine witnesses under oath and look at the property, then set the split in writing. That written determination is filed with the county recorder and binds both sides. Idaho Code 35-106Idaho · Statute
How tall can a fence be in Idaho?
SilentThe documents were read and none of them cover it. The list of what was read is printed with the finding.
Idaho sets no statewide limit on residential fence height. The height numbers that do appear in state law are minimums for a lawful fence in livestock country, not caps on a yard fence: Section 35-101 states a floor of four and one half feet, and Section 35-102 states board, rail and wire heights for each fence type. Residential height limits come from city and county zoning.
Documents read before writing that:
- Idaho Code 35-101Idaho State Legislature
- Idaho Code 35-102Idaho State Legislature
Do I need a permit for a fence in Idaho?
StatedThe code gives a plain answer, and the line it appears on is quoted.
Idaho runs a real statewide residential code. Section 39-4109 makes the version of the International Residential Code picked by the Idaho building code board, together with that board's own amendments, the Idaho residential code. The board moves to a newer version through negotiated rulemaking, and the adopted version stays in force until it does.
The version of the International Residential Code adopted by the Idaho building code board, together with the amendments, revisions or modifications adopted by the Idaho building code board through the negotiated rulemaking process
Also on permits in Idaho
- StatedIdaho keeps farm buildings outside the building code. Barns, livestock shelters, poultry buildings, greenhouses, grain silos, stables and similar storage structures fall under the exemption. Places people live in, plants where farm products get processed, and buildings open to public use do not. A county may still issue a farm building permit, but only to confirm road setbacks and utility easements, and only at its actual cost. Idaho Code 39-4116Idaho · Building code
Pool fence requirements in Idaho
SilentThe documents were read and none of them cover it. The list of what was read is printed with the finding.
Idaho pool barrier rules sit in IDAPA 16.02.14, the Department of Health and Welfare rule on construction and operation of public swimming pools. That rule is published only as a PDF and its text could not be read from the state source, so no wording is quoted here. Its current standing is also unsettled, because 2025 House Bill 202 moved duties away from the Department of Health and Welfare and the rule is absent from the current rules folder.
Documents read before writing that:
- IDAPA 16.02.14Idaho Office of the Administrative Rules Coordinator
- 2025 Idaho Sess. Laws, H.B. 202Idaho State Legislature
Spite fence laws in Idaho
SilentThe documents were read and none of them cover it. The list of what was read is printed with the finding.
Idaho has no spite fence statute. Title 35 chapter 1, the fences chapter, runs from Section 35-101 through 35-112 and covers lawful fence specifications, partition fences, cost splits, viewers, surveys and gates, with no mention of malice and no height trigger. Title 52 chapter 1, the general nuisance chapter, defines public and private nuisance without naming fences at all.
Documents read before writing that:
- Idaho Code tit. 35, ch. 1Idaho State Legislature
- Idaho Code tit. 52, ch. 1Idaho State Legislature
- Idaho Code 52-101Idaho State Legislature
How fence height is measured in Idaho
Not researched yet for Idaho. Nothing on this page states what the rule is, because nothing has been read that says.
Fence rules for corner lots in Idaho
Not researched yet for Idaho. Nothing on this page states what the rule is, because nothing has been read that says.
Retaining wall rules in Idaho
Not researched yet for Idaho. Nothing on this page states what the rule is, because nothing has been read that says.
Fence materials allowed in Idaho
Not researched yet for Idaho. Nothing on this page states what the rule is, because nothing has been read that says.
Livestock and boundary fence law in Idaho
StatedThe code gives a plain answer, and the line it appears on is quoted.
Idaho is an open range state. A person who owns or controls a domestic animal grazing on open range has no duty to keep it off a highway crossing that range, and is not liable when a vehicle hits it. Open range means unenclosed land outside cities, villages and herd districts where cattle graze by custom, license, lease or permit. The practical effect is that keeping livestock out falls to the neighboring land rather than to the stock owner.
No person owning, or controlling the possession of, any domestic animal running on open range, shall have the duty to keep such animal off any highway on such range, and shall not be liable for damage to any vehicle or for injury to any person riding therein, caused by a collision between the vehicle and the animal.
Also on agricultural fencing in Idaho
- StatedIdaho defines the lawful fence that open range and herd district rules lean on. It has to stand at least four and one half feet high. The bottom board, rail, pole or wire may sit no more than twenty inches off the ground, and the space between top and bottom has to be well divided. Idaho Code 35-101Idaho · Statute
- StatedIdaho spells out the wire version of a lawful fence. Posts stand no more than twenty four feet apart, with three substantial stays spaced evenly between them. The fence needs at least three barbed wires, or four coiled spring wires of number nine gauge or heavier, fastened to every post and stay. Idaho Code 35-102Idaho · Statute
- StatedIdaho lets a majority of property owners in an area petition the county commissioners to create a herd district, which bars named livestock from running at large inside it. Everything outside those districts and outside cities and villages stays open range. Taxable property owners inside a herd district pay to build and maintain the legal fences and cattle guards along the border with open range. Idaho Code 25-2402(3)Idaho · Statute
Documents behind this page
14 documents, each read on the date shown. Nothing on this page rests on a summary of one.
- Idaho State LegislatureIdaho Statutes, Title 35, Chapter 1, Section 35-103, Erection of partition fences
- Idaho State LegislatureIdaho Statutes, Title 35, Chapter 1, Section 35-104, Care of fences by adjoining owners
- Idaho State LegislatureIdaho Statutes, Title 35, Chapter 1, Section 35-106, Disagreement between owners, viewers
- Idaho State LegislatureIdaho Statutes, Title 35, Chapter 1, Section 35-101, Lawful fences in general
- Idaho State LegislatureIdaho Statutes, Title 35, Chapter 1, Section 35-102, Lawful fences described
- Idaho State LegislatureIdaho Statutes, Title 39, Chapter 41, Section 39-4109, Application of codes
- Idaho State LegislatureIdaho Statutes, Title 39, Chapter 41, Section 39-4116
- Idaho Office of the Administrative Rules CoordinatorIDAPA 16.02.14, Construction and Operation of Public Swimming Pools, Department of Health and Welfare (PDF, text not readable)
- Idaho State LegislatureHouse Bill 202, 2025 session, Department of Health and Welfare provisions
- Idaho State LegislatureIdaho Statutes, Title 35, Chapter 1, Fences, full section list
- Idaho State LegislatureIdaho Statutes, Title 52, Chapter 1, Nuisances in General, full section list
- Idaho State LegislatureIdaho Statutes, Title 52, Chapter 1, Section 52-101, Nuisance defined
- Idaho State LegislatureIdaho Statutes, Title 25, Chapter 21, Section 25-2118, Animals on open range, no duty to keep from highway
- Idaho State LegislatureIdaho Statutes, Title 25, Chapter 24, Section 25-2402, Petition and requirements for district
What this page does not cover
Everything above is state law. Fence height, setback, corner visibility and materials are set by city and county ordinance in almost every state, and a local rule can be far stricter than the statewide default. A parcel can also carry an easement, an overlay district, a fire hazard zone or a recorded HOA restriction, none of which appear in a statute.
This is general information drawn from published government documents. It is not legal advice, statutes are amended, and the date beside each finding is the date the document was read. How findings are made · What the terms mean