Fence Regulations in Caldwell, ID (2026)
7 verified fence regulations for Caldwell, Idaho, sourced directly from the municipal code and official government pages.
Verified from official government sources
Height Limits
Caldwell City Code section 10-02-07 limits open and solid residential fences to a maximum of six feet along side and rear property lines. Within twenty feet of the front property line, heights step down. Fences in a vision triangle are capped at three feet for traffic visibility.
Caldwell Fence Height Limits
Some RestrictionsPermit Requirements
Under the Idaho Residential Code adopted by Caldwell, fences up to seven feet are exempt from a building permit, but all fences must still comply with zoning Section 10-02-07 for height, setback, and material. Masonry walls, retaining walls over four feet, and pool barriers can trigger a separate permit.
Caldwell Fence Permits
Some RestrictionsNeighbor Fence Rules
Caldwell's zoning code sets fence heights and a "good side out" rule but does not assign cost-sharing for boundary fences. Idaho Code Title 35 governs shared partition fences: an adjoining owner who is notified must build half, or the neighbor can build it and recover half the cost with a lien.
Caldwell Boundary & Neighbor Fence Rules
Some RestrictionsRetaining Walls
Caldwell follows the Idaho Residential Code, which exempts retaining walls four feet or less (measured from the bottom of the footing to the top) from a building permit unless they support a surcharge or impound flammable liquids. Taller walls require a permit and engineering. Walls must also respect zoning setbacks and vision triangles.
Caldwell Retaining Walls
Some RestrictionsFence Requirements
Caldwell City Code 10-02-07 requires fences to conform to height, setback, and material standards in every zoning district except C-C City Center. Street-frontage fences built after December 1, 2019 must show the finished side outward, and fences cannot obstruct a vision triangle.
Caldwell Fence Requirements
Some RestrictionsMaterial Restrictions
Caldwell City Code 10-02-07 prohibits electric, concertina, barbed, and razor wire fences in most zoning districts. Such wire is allowed only as the top section of fences in commercial and industrial zones, beginning at least six feet above grade. Chainlink and vinyl are barred in the Steunenberg historic district.
Caldwell Fence Material Restrictions
Some RestrictionsApproved Materials
Most standard fence materials are allowed in Caldwell under Section 10-02-07, but the code distinguishes "open" from "solid" fencing for height and bars dangerous wire types outside commercial/industrial zones. Historic and arterial-frontage rules add material limits, and street-frontage fences must show the finished side outward.
Caldwell Approved Fence Materials
Some RestrictionsLooking for Canyon County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Caldwell city rules.
Fence Regulations in Canyon County →