ADUs are allowed in HerrimanTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Herriman, UT
Is your property eligible for an ADU?
# of Properties
16,340
Owner-occupied
82%
Zoning districts
23
Avg Home Value
$674,027
Median Lot Size
0.15 acres
Avg Income
$128,581
Residential Types:
16,340 housing units
Single Family
99%
Apts (4+ units)
1%
Zoning Districts:
20,066 parcels · 23 districts
R-2-10
23%(4,713)
R-1-15
16%(3,275)
MU-2
16%(3,202)
A-1-10
15%(2,940)
Other
30%(5,936)
ADU Rules
What can you build in Herriman, UT?
Herriman, 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
Detached ADU Size Limits
- –Detached ADUs (backyard cottages) are not permitted in Herriman; maximum allowed building area is 0 sq ft.
Max Units
- –1 per lot for single-family (internal ADU) on 6,000 sf+ parcels
- –0 per lot for internal ADUs in duplex/multifamily
- –0 per lot for detached ADUs
Owner Occupancy
- –Owner must occupy either the primary dwelling or ADU as permanent residence
Parking
- –Minimum 5 spaces (2-car garage + 2 paved spaces + 1 ADU space); plus 1 space per vehicle owned. ADU must be in front or side yard; front cannot extend past existing garage; tandem parking allowed if it does not encroach on property line or sidewalk; on-street parking not counted; if ADU reduces required spaces, the lost spaces must be replaced.
Rental Restrictions
- –Detached ADU rental use not authorized; internal ADU may not be used or licensed as a residential vacation/short-term rental; citywide short-term rentals prohibited; owner may not rent the vacant permanent unit while away (up to four months/year) to prevent dual rental.
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