Accessory Structures in Bonneville County, ID (2026)

2 rules for unincorporated Bonneville County, Idaho.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Bonneville County. If you live within an incorporated city, that city's own rules apply: see the city list below.

Shed & Carport Rules

In Bonneville County's unincorporated residential zones, a shed or other accessory building cannot cover more than 30% of the rear yard. It also needs a zoning permit and must meet the same setbacks as any other structure on the lot.

Bonneville County Accessory Building Rules

Some Restrictions

Bonneville County Code of Ordinances § 156.029

AREA OF ACCESSORY BUILDINGS. No accessory building or group of accessory buildings in a residential zone shall cover more than 30% of the rear yard.

Full ordinance details →Official source ↗

Tiny Homes

Bonneville County's floodplain code classifies tiny homes as manufactured homes and recreational vehicles. Any tiny home sited within a special flood hazard area must meet the same elevation and permitting standards as a manufactured home, not the lighter rules for a storage shed or detached garage.

Bonneville County Tiny Home Placement in Flood Zones

Some Restrictions

Bonneville County Code of Ordinances §§ 154.02, 154.46(A), (E)

MANUFACTURED HOME. A structure, transportable in one or more sections, built on a permanent chassis and designed to be used with or without a permanent foundation when connected to the required utilities. This includes tiny homes and park model manufactured homes... (A) Residential construction. New construction, substantial improvements and development of any residential structure (including m...

Full ordinance details →Official source ↗

All Bonneville County ordinances

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