

ADUs are allowed in Unincorporated TooeleTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Unincorporated Tooele, UT
Is your property eligible for an ADU?
# of Properties
4,501
Owner-occupied
86%
Zoning districts
32
Avg Home Value
$500,942
Median Lot Size
0.22 acres
Avg Income
$125,314
Residential Types:
4,501 housing units
Apts (4+ units)
1%
Other
99%
Zoning Districts:
10,918 parcels · 32 districts
MU-40
35%(3,807)
R-1-10
30%(3,254)
RR-5
8%(876)
R-M-7
8%(821)
Other
20%(2,160)
ADU Rules
What can you build in Unincorporated Tooele, UT?
Unincorporated Tooele, UT 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: Conditional Use Permit
Interior / Attached ADU Size Limits
- –Maximum size of 1,500 sq ft of gross floor area for internal/attached ADUs.
Detached ADU Size Limits
- –Maximum size of 1,500 sq ft of gross floor area
Max Units
- –1 ADU per parcel overall.
- –Internal ADU: 1 per lot.
- –Detached ADU: 1 per parcel (MU, A, RR).
Owner Occupancy
- –Owner must occupy the primary residence for ADUs
Parking
- –1 space per ADU on the same parcel, in addition to the primary dwelling's parking; detached ADU (where allowed in MU-, A-, RR-): 1 space (studio/1-bedroom) or 2 spaces (2+ bedrooms), on the same parcel; no maximum stated.
Rental Restrictions
- –No ADU rentals for <30 days (detached/internal); 30-day minimum lease; county-wide rule prohibits lodging <30 days in applicable districts
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 Utah municipalities
Rules change at the town line. Check the municipality your property is actually in.
Tooele County