

ADU rules for Mountain Home
Accessory Dwelling Unit (ADU) Rules for Mountain Home, ID
Is your property eligible for an ADU?
# of Properties
6,419
Owner-occupied
75%
Zoning districts
14
Avg Home Value
$462,082
Median Lot Size
0.20 acres
Avg Income
$64,917
Residential Types:
6,419 housing units
Single Family
100%
Zoning Districts:
6,419 parcels · 14 districts
R3
45%(2,893)
R4
30%(1,911)
R2
12%(769)
C3
4%(275)
Other
9%(571)
ADU Rules
What can you build in Mountain Home, ID?
Mountain Home, ID follows state and local rules for Accessory Dwelling Units. Here is a concise overview of the local rules.
Eligibility
- –Internal / Attached ADU: Not addressed in the local bylaw
- –Detached ADU: Not addressed in the local bylaw
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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Is your property eligible for an ADU?
ADU rules in other Idaho municipalities
Rules change at the town line. Check the municipality your property is actually in.
Elmore County