Bonneville County, ID Accessory Structures: Shed & Carport Rules (2026)
Shed permit rules in Bonneville County, ID, also referred to as storage shed, backyard shed, or accessory building regulations, set size limits, setbacks, and when a building permit is required.
Key Facts
- Max rear-yard coverage
- 30% (residential zones)
- Side yard waiver distance
- 12 ft from main building, 100 ft from street
- Rear yard waiver distance
- 12 ft from main building
- Permit trigger
- $100+ in value
- Fine
- $100 per day of violation
Summary
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.
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.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-1: Ordinance 280-26, passed 1-20-2026).
Full Breakdown
029 caps accessory building coverage at 30% of the rear yard in a residential zone, whether it is one shed or a group of accessory buildings sharing the yard. 003 as "a subordinate building the use of which is incidental to that of the main building," which covers sheds, detached garages and similar outbuildings. 133 waives the rear yard setback only if the accessory building is at least 12 feet behind the main building. Outside those exceptions, the full side and rear yard minimums for the zone apply.
999(A) also requires a permit from the county Zoning Administrator before a shed valued at $100 or more is erected, altered or reconstructed anywhere in the unincorporated area. ) since side and rear yard minimums differ by zone, and confirm the 30% rear-yard cap against the lot's actual platted rear yard depth before pouring a foundation.
Violations & Fines
Erecting a shed worth $100 or more without a Zoning Administrator permit, or exceeding the 30% rear-yard coverage cap, is an infraction under § 156.999(A) punishable by a $100 fine (no jail time). Each day the violation continues is a separate offense, and a judge may also issue an injunction or restraining order ordering removal or compliance.
Frequently Asked Questions
Can I build a shed that covers half my backyard in Bonneville County?
Do I need a permit for a small shed?
How close to my property line can I put a shed?
Sources & Official References
Other rules in Bonneville County
How Bonneville County compares: Shed Permit Requirements by City·Compare Bonneville County to another location·View the Idaho accessory structures overview
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