Accessory Structures in Kootenai County, ID (2026)
3 rules for unincorporated Kootenai County, Idaho.
Verified from official government sources
ADU Rules
Unincorporated Kootenai County allows one accessory living unit per parcel with an accessory living unit permit from the Director. It cannot share a common wall with the main home and is capped at 1,000 sq ft or 50% of the primary home's habitable space.
ADU (Accessory Living Unit) Rules in Unincorporated Kootenai County
Some RestrictionsKootenai County LUDC 8.4.301
The square footage of the accessory living unit shall not exceed 1,000 square feet of habitable space or fifty percent (50%) of the habitable space of the primary structure, whichever is greater. ... An accessory living unit cannot share a common wall with the principal dwelling unit.
Shed & Carport Rules
In unincorporated Kootenai County, a one-story detached storage shed 200 sq ft or smaller needs no building permit, but must still meet Title 8 placement (setback) standards, a 10-foot eave height limit, and 12-inch roof projection limit.
Shed Rules in Unincorporated Kootenai County
Some RestrictionsKootenai County Code Title 7, Sec. 105.2
One-story detached accessory structures used as tool or storage sheds, playhouses, gazebos, free standing pergolas, and similar uses, provided the floor area does not exceed 200 square feet. Said accessory structure shall conform to placement standards established in Title 8 of the Kootenai County code. ... Such structures are limited to a ten foot eave height.
Tiny Homes
Kootenai County has no dedicated tiny-home ordinance. A tiny home on wheels is a recreational vehicle or park model RV, which cannot be used as a permanent dwelling; a tiny home on a foundation must meet building code and normal dwelling standards.
Tiny Homes in Unincorporated Kootenai County
Some RestrictionsKootenai County LUDC 8.4.401(C)
An RV shall not be used as a dwelling except as provided in this section. The owner of an RV must have a primary residence other than the RV.
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