ADUs are allowed in HolladayTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Holladay, UT
Is your property eligible for an ADU?
# of Properties
10,735
Owner-occupied
77%
Zoning districts
23
Avg Home Value
$947,127
Median Lot Size
0.23 acres
Avg Income
$128,517
Residential Types:
10,735 housing units
Single Family
98%
Apts (4+ units)
1%
Zoning Districts:
12,465 parcels · 23 districts
R-1-10
33%(4,129)
R-1-8
22%(2,758)
R-M
14%(1,730)
R-1-21
7%(832)
Other
24%(3,016)
ADU Rules
What can you build in Holladay, UT?
Holladay, 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
- –By-right maximum size based on lot area (800–1,400 sq ft by brackets); on lots up to 0.5 acre, also limited to the primary dwelling’s footprint
Max Units
- –Single-family detached: 1 ADU per lot; total occupiable units per lot = 2 (1 primary + 1 ADU).
- –Duplex/Multifamily: 0 ADUs per lot; IADU or EADU: 1 per lot (not both); JADU: none specified.
Owner Occupancy
- –Owner or immediate family must occupy either the main dwelling or ADU.
Parking
- –Min 2 spaces/ADU (1 extra beyond §13.80.040; internal ADU = 1 per ADU; external ADU = 1/1.5/2 per bedroom). Planning Commission may reduce minimum by up to 30% under §13.80.040.B.
Rental Restrictions
- –Short-term rentals under 30 days prohibited; if an ADU is rented, lease must be a minimum of 30 consecutive days and is subject to annual city licensing.
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.
Salt Lake County