ADUs are allowed in Unincorporated SummitTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Unincorporated Summit, UT
Is your property eligible for an ADU?
# of Properties
15,138
Owner-occupied
51%
Zoning districts
29
Avg Home Value
$1,758,681
Median Lot Size
0.56 acres
Avg Income
$150,591
Residential Types:
15,138 housing units
Other
100%
Zoning Districts:
27,751 parcels · 29 districts
AG-80
33%(9,052)
RR
19%(5,289)
HS
17%(4,702)
RC
9%(2,631)
Other
22%(6,077)
ADU Rules
What can you build in Unincorporated Summit, UT?
Unincorporated Summit, 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
Detached ADU Size Limits
- –Maximum size of 1,000 sq ft for a detached accessory dwelling unit.
Owner Occupancy
- –Owner must occupy either the main dwelling or the ADU.
Parking
- –1 off-street space per ADU (in addition to primary dwelling parking); Internal ADUs also require 1 space; no max.
Rental Restrictions
- –Nightly rentals prohibited; minimum 30-day term.
- –Deed-restricted affordable units: minimum 90 consecutive days; nightly/weekly rentals prohibited.
- –Residency restriction (commercial-use tied): at least one resident must be the owner or an employee.
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.
Summit County