

ADUs are allowed in Unincorporated BonnerTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Unincorporated Bonner, ID
Is your property eligible for an ADU?
# of Properties
28,067
Owner-occupied
100%
Zoning districts
17
Avg Home Value
$544,793
Median Lot Size
3.02 acres
Avg Income
$76,006
Residential Types:
28,067 housing units
Single Family
7%
Other
93%
Zoning Districts:
36,389 parcels · 17 districts
R-5
30%(11,020)
A/F-20
13%(4,803)
REC
13%(4,567)
A/F-10
12%(4,301)
Other
32%(11,698)
ADU Rules
What can you build in Unincorporated Bonner, ID?
Unincorporated Bonner, ID follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: By Right
- –Detached ADU: By Right
Interior / Attached ADU Size Limits
- –Maximum size of 900 sq ft for an internal accessory dwelling unit
Detached ADU Size Limits
- –Maximum size of 900 sq ft for a detached accessory dwelling unit
Max Units
- –1 ADU per lot or parcel (all principal types: single-family, duplex, multifamily)
Parking
- –1 space/ADU; no maximum specified; no waivers or reductions stated
Rental Restrictions
- –Vacation rentals require a permit; without one, any dwelling may be rented for up to 14 days per year (no more than two stays); if permitted, vacation rentals are allowed only in zones that permit them and subject to occupancy caps (2 people per bedroom + 2, max 20).
What's allowed on your lot?
These are the municipality-wide rules. What's allowed on a specific property also depends on state laws, setbacks, floor area ratio, lot coverage, environmental constraints, topography, and other property-specific factors. Search your address on FutureLot to see what's allowed on your property.
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ADU rules in other Idaho municipalities
Rules change at the town line. Check the municipality your property is actually in.
Bonner County