Building Setbacks & Zoning in Bonneville County, ID (2026)
3 rules for unincorporated Bonneville County, Idaho.
Verified from official government sources
Setback Rules
In Bonneville County's A-1 Agricultural Zone, a dwelling's front yard runs 80 feet from the road centerline (or 55 feet from the right-of-way, whichever is greater), with 20-foot side yards and a 20-foot rear yard for main buildings.
Bonneville County A-1 Zone Yard Setbacks
Some RestrictionsBonneville County Code of Ordinances § 156.131
§ 156.131 FRONT YARD. Every lot on which a dwelling is situated shall have a front yard of not less than 80 feet from the centerline, or at least 55 feet from the right-of-way of all county roads, whichever is the greater; except for lots in platted areas which shall be set back 30 feet from the road right-of-way line.
Structure Height Limits
In the RA-1 Residential Agricultural Zone, Bonneville County caps building height at 20 feet and requires every building to be at least one full story above grade, excluding roof features, chimneys, flagpoles, antennas, and church towers from the measurement.
Bonneville County RA-1 Zone Height Limit
Some RestrictionsBonneville County Code of Ordinances § 156.153
No building shall be erected to a height of greater than 20 feet, and no building shall be erected to a height of less than one story above grade, except as permitted under the provisions of § 156.030. Roofs above the square of the building, chimneys, flagpoles, television antennas, church towers and similar structures not used for human occupancy are excluded in determining height.
Lot Coverage Limits
In the R-P Residence Park Zone, Bonneville County limits the total area covered by structures to 40% of the lot; the R-1 Residence Zone carries the identical 40% cap, while the denser R-1.5 and RA-3 zones allow up to 80% including paved surfaces.
Bonneville County R-P Zone Lot Coverage Cap
Some RestrictionsBonneville County Code of Ordinances § 156.233
LOT COVERAGE. The total area of structures on a lot shall not exceed 40%.
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