

ADUs are allowed in AshtonTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Ashton, ID
Is your property eligible for an ADU?
# of Parcels
745
Zoning districts
5
Avg Parcel Value
$172,401
Median Parcel Size
0.22 acres
Zoning Districts:
681 parcels · 5 districts
LDRZD
73%(494)
CCZD
15%(103)
HCZD
8%(54)
HDRZD
3%(20)
Other
1%(10)
ADU Rules
What can you build in Ashton, ID?
Ashton, 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
Parking
- –2 off-street spaces per dwelling unit; spaces must be within 100 ft; no ADU-specific reductions or waivers (including conversions).
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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