ADUs are allowed in Unincorporated TetonTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Unincorporated Teton, ID
Is your property eligible for an ADU?
# of Parcels
11,023
Zoning districts
16
Avg Parcel Value
$483,094
Median Parcel Size
2.63 acres
Zoning Districts:
11,049 parcels · 16 districts
RN-5
40%(4,455)
RA-35
21%(2,372)
LA-35
10%(1,154)
FH-20
7%(813)
Other
20%(2,255)
ADU Rules
What can you build in Unincorporated Teton, ID?
Unincorporated Teton, 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 ADU size is capped at 1,500 sq ft; on lots 5 acres or larger this numeric cap does not apply.
- –Maximum ADU size is the greater of 50% of the primary dwelling’s floor area or 900 sq ft; on lots 5 acres or larger this numeric limit does not apply.
Detached ADU Size Limits
- –Maximum ADU size is the greater of 50% of the primary residence or 900 sq ft, capped at 1,500 sq ft; on lots 5 acres or larger, no size cap applies.
Owner Occupancy
- –Owner occupancy not required.
Parking
- –Two (2) off-street spaces per ADU required in A-20 and A-2.5; none stated for R-1, C-1, C-2, C-3; no waivers or transit-based exceptions.
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.
Teton County