Building Setbacks & Zoning in Twin Falls County, ID (2026)
3 rules for unincorporated Twin Falls County, Idaho.
Verified from official government sources
Setback Rules
In the Agricultural Range Preservation zone of unincorporated Twin Falls County, every building needs a 30-foot front yard, a 7-foot side yard and a 30-foot rear yard, with a corner lot's side-street yard set at 25 feet. Taller buildings need more room: each setback grows a foot for every five feet a building rises past 35 feet.
Twin Falls County ARP Zone Yard Setbacks
Some RestrictionsTwin Falls County Code § 8-6A-5
D. Yards: Residential and other uses: 1. Front: A minimum front yard depth of thirty feet (30') shall be provided for all buildings, except where a building exceeds a height of thirty five feet (35'), the front yard shall be increased one foot (1') in depth for each five feet (5') of height exceeding thirty five feet (35'). 2. Side: A minimum side yard of seven feet (7') shall be provided...
Structure Height Limits
Twin Falls County does not cap building height outright in its Rural Residential zone; instead, County Code § 8-6D-5 makes thirty-five feet the threshold that triggers bigger yards, adding one foot of front, side, and rear setback for every five feet a building climbs above that height.
Twin Falls County Rural Residential Height Setback
Some RestrictionsTwin Falls County Code § 8-6D-5
D. Yards: Residential and other uses: 1. Front: A minimum front yard depth of thirty feet (30') shall be provided for all buildings except where a building exceeds a height of thirty five feet (35'), the front yard shall be increased one foot (1') in depth for each five feet (5') of height exceeding thirty five feet (35'). 2. Side: A minimum side yard depth of seven feet (7') shall be provided ...
Lot Coverage Limits
In agricultural and residential zones of unincorporated Twin Falls County, the combined footprint of a house and its accessory buildings cannot exceed thirty-five percent of the lot. County Code section 8-12-1(B)(7) sets that cap, and subsection (B)(5) excludes any underground shelter's area from the coverage calculation.
Lot Coverage Cap in Twin Falls County
Some RestrictionsTwin Falls County Code § 8-12-1(B)(7)
8-12-1: SPECIAL PROVISIONS: ... B. Accessory Building In Agricultural And Residential Zones: ... 5. Acceptance: Commercial variations may request planning and zoning commission acceptance. The area of underground shelters shall not be computed in maximum coverage requirements. ... 7. Coverage: Combined coverage of the property by the primary and accessory buildings shall not exceed thirty five ...
All Twin Falls County ordinances
See every category we cover for Twin Falls County: parking, noise, fences, fires, animals, pools, and more.
Twin Falls County Ordinance Hub →