ADUs are allowed in Unincorporated Salt LakeTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Unincorporated Salt Lake, UT
Is your property eligible for an ADU?
# of Properties
2,477
Owner-occupied
71%
Zoning districts
45
Avg Home Value
$736,198
Median Lot Size
0.26 acres
Avg Income
$141,944
Residential Types:
2,477 housing units
Single Family
88%
Other
12%
Zoning Districts:
6,924 parcels · 45 districts
FR-20
26%(1,832)
A-1
13%(919)
FM-20
8%(531)
M-2
7%(488)
Other
46%(3,154)
ADU Rules
What can you build in Unincorporated Salt Lake, UT?
Unincorporated Salt Lake, 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: By Right
Max Units
- –Single-family detached: 1 total (1 internal OR 1 detached; not both).
- –Townhome/duplex/multifamily: 0 ADUs.
Owner Occupancy
- –Owner must occupy either the principal or ADU
Parking
- –1 on-site space per ADU (in addition to 2 spaces for single-family dwellings); no max; exceptions: must demonstrate sufficient on-site parking; garage conversions require replacing primary-dwelling off-street spaces; ADUs not permitted on lots that cannot meet parking.
Rental Restrictions
- –Short-term rentals prohibited; 30+ days minimum for any ADU rental; only non-owner-occupied unit may be rented (owner-occupied unit cannot be rented); permits, code compliance, and business license required before renting.
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 Utah municipalities
Rules change at the town line. Check the municipality your property is actually in.
Salt Lake County