

ADUs are allowed in Unincorporated ElmoreTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Unincorporated Elmore, ID
Is your property eligible for an ADU?
# of Properties
5,877
Owner-occupied
83%
Zoning districts
23
Avg Home Value
$324,006
Median Lot Size
4.91 acres
Avg Income
$77,667
Residential Types:
5,877 housing units
Single Family
5%
2-3 Family
54%
Apts (4+ units)
41%
Zoning Districts:
13,853 parcels · 23 districts
AG
94%(13,023)
C2
2%(240)
ABHZ
2%(215)
M1
1%(88)
Other
2%(287)
ADU Rules
What can you build in Unincorporated Elmore, ID?
Unincorporated Elmore, 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 for internal or attached ADUs: 900 sq ft countywide, or 1,000 sq ft within the Mayfield Townsite.
Detached ADU Size Limits
- –Maximum size of 900 sq ft; within the Mayfield Townsite overlay, maximum 1,000 sq ft.
Owner Occupancy
- –No owner-occupancy required.
Parking
- –1 off-street space per ADU (in addition to the primary dwelling’s minimum); driveway apron within the front-yard setback may count; for garage conversions, parking must be relocated legally elsewhere on the property.
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.
Elmore County