Fence Permit — Twin Falls, Idaho · Requirements sheet
Verified 2026-07-03 · Source: https://www.tfid.org/DocumentCenter/View/6524/FENCES-and-SIGHT-OBSTRUCTIONS-revised-3-1-24
PermitBase is an independent reference and is not affiliated with any government agency. Requirements change and vary by project — confirm current details with the building department before you submit.
Fence Permit in Twin Falls, Idaho
Fences in Twin Falls are regulated primarily by height, with a 7-foot threshold for requiring a building permit, and by sight-triangle height restrictions (3 feet maximum) near driveways, street intersections, and alleys regardless of the general 7-foot threshold. Governed by the City of Twin Falls 'Fences & Sight Obstructions' handout and Twin Falls City Code Section 9-9-16 (Obstruction to Vision at Intersections).
Verified 2026-07-03 · Source
When you need this permit
- Fences 7 feet in height or less do not require a building permit
- Fences over 7 feet in height require a building permit
- Regardless of the 7-foot threshold, a fence located within a driveway sight triangle (100 ft along the curb / 10 ft along the left driveway edge, or 125 ft along the curb / 10 ft along the right driveway edge), a 40-foot street-intersection sight triangle, or a 40 ft/15 ft alley sight triangle cannot exceed 3 feet in height
- A minimum 3-foot clearance must be maintained on all sides of fire hydrants, free of fences
- Properties in a Flood Zone require a Flood Plain Development Permit through the City's Engineering Department even if a building permit is not otherwise required for the fence
- Permit application requires: a site plan showing fence location, structural plans showing post/fencing material and construction method, post depth in the ground/concrete, and the fence height
- If there is no curb in front of the property, the future curb line can be obtained from the City Engineering Department at (208) 735-7248
Required documents
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Fee schedule
Review timeline
Inspection process
- 1
Final
Completed fence height, post depth, and sight-triangle compliance verified against approved plans
See the full Twin Falls inspection guide — scheduling & re-inspection fees →
Tips
- Fences 7 feet or under never require a permit anywhere on the lot outside sight triangles; the sight-triangle 3-foot cap applies regardless of whether a permit would otherwise be required.
- The City's published plan review timeline for fences (where plan review applies) is 2 weeks for residential and 3 weeks for 'miscellaneous' commercial-adjacent categories including fences.
- Fences (regardless of height) must maintain a 3-foot clear zone around fire hydrants per Fire Department requirements — contact (208) 735-7233 for questions.
Frequently asked questions
Sources & verification
Verified against official sources. Last reviewed 2026-07-03.
Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Twin Falls building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
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