ADUs are allowed in Unincorporated ValleyTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Unincorporated Valley, ID
Is your property eligible for an ADU?
# of Properties
14,761
Owner-occupied
23%
Zoning districts
12
Avg Home Value
$567,195
Median Lot Size
0.79 acres
Avg Income
$82,260
Residential Types:
14,761 housing units
Single Family
3%
Other
97%
Zoning Districts:
2,070 parcels · 12 districts
R4
69%(1,421)
R1
18%(380)
RR
4%(91)
RE
4%(91)
Other
4%(87)
ADU Rules
What can you build in Unincorporated Valley, ID?
Unincorporated Valley, 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 is the lesser of 1,000 sq ft or 50% of the primary structure’s floor area (excluding garages, carports, and open storage).
Detached ADU Size Limits
- –Maximum size of 1,000 sq ft
- –Maximum size of 50% of the primary structure’s square footage (excluding open storage areas, garages, and carports)
Owner Occupancy
- –Owner must occupy either the primary or ADU
Parking
- –1 space per ADU; parking not allowed in public right-of-way or in required setbacks
Rental Restrictions
- –Minimum stay >30 days for permitted rentals.
- –Short-term rentals ≤30 days require a CUP; otherwise not allowed.
- –ADU cannot be used as B&B/commercial use without a CUP.
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.
Valley County