Fence Regulations in Idaho (2026)

In unincorporated Ada County, fences may sit inside or outside any setback but cannot exceed six feet above grade on a…

Boise caps residential fence height at 6 feet on side/rear lines and limits front-yard fences to 36-48 inches under the…

In Bonneville County's residential zones, no fence, wall or hedge over 3 feet tall is allowed within 15 feet of the…

Caldwell caps front-yard fencing at four feet for open styles and three feet for solid fencing, with taller fencing…

Idaho Falls requires a fence permit and compliance with the zoning code's visibility rules. Key requirements include a…

Kootenai County caps fencing at eight feet under LUDC 8.4.605(D), the same threshold that lets a fence skip the title's…

Meridian caps residential fences at 6 feet in side and rear yards, drops to 3-4 feet in the street yard, and allows 8…

Nampa caps residential fences at 6 feet in side and rear yards, 3 to 4 feet in front yards, with a required vision…

Ada County Code 8-3-6(F) requires a building permit, with drawings stamped by a licensed engineer or architect, for any…

Boise doesn't require a building permit for fences up to 7 feet tall, but Development Code height and material rules…

Caldwell requires a building permit only for fences taller than six feet; any fence, regardless of height, must also…

In unincorporated Kootenai County, fences under eight feet tall are exempt from zoning setback requirements and do not…

Meridian requires a fence permit before installing any fence, with one exception: fences installed alongside a building…

Nampa requires a building permit before anyone builds a fence or masonry wall anywhere within city limits, with height…

Idaho Code Title 35 governs partition fences statewide, requiring adjoining landowners to share equally in the cost of…

Ada County zoning lets a six-foot fence sit on the perimeter boundary between neighbors, but any sight-obscuring fence…

Boise requires a fence to sit entirely on the builder's own property unless the neighbor agrees to something else.

Kootenai County's Land Use Code sets no boundary-fence cost-sharing or 'good-neighbor' rule; those are civil matters…

Any retaining wall in unincorporated Ada County with a total vertical height of four feet or more, footing included…

Boise caps retaining walls in setbacks at 36 or 72 inches, and a building permit kicks in above 4 feet of exposed…

Idaho Falls's zoning code contains no retaining-wall provisions. Retaining walls are regulated as building work under…

In unincorporated Kootenai County a retaining wall taller than four feet above ground level (unless within a setback…

Ada County Code 8-3-6(C) bans barbed wire and electric wire fencing across the unincorporated county unless the…

Nampa prohibits barbed wire on residential property and allows it only as a security-fence topper in commercial or…

Boise bans electric fences citywide and restricts barbed wire, chain-link, and low-quality materials under its…

Caldwell bans electric, concertina, barbed and razor wire fencing in every zoning district, with a carve-out for horse…

Unincorporated Canyon County's zoning code requires a sight-obscuring fence or wall to be built of durable material…

Kootenai County allows conventional fence materials but forbids fences of tires, manufactured-home parts, salvaged…

Meridian prohibits electric wire and barbed wire as fence components citywide, with a narrow commercial/industrial…