ADUs are allowed in Unincorporated IronTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Unincorporated Iron, UT
Is your property eligible for an ADU?
# of Parcels
32,469
Zoning districts
26
Avg Parcel Value
$104,999
Median Parcel Size
3.02 acres
Zoning Districts:
32,509 parcels · 26 districts
A-20
36%(11,577)
R-1
24%(7,734)
R-2
15%(4,872)
R-1/2
11%(3,449)
Other
15%(4,877)
ADU Rules
What can you build in Unincorporated Iron, UT?
Unincorporated Iron, 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
- –Internal ADU (within footprint) maximum size is less than 50% of the primary dwelling area.
Detached ADU Size Limits
- –Detached ADUs are not permitted as ADUs in Iron County; detached units are regulated as guest houses, so the maximum ADU building area is 0 sq ft.
Owner Occupancy
- –Owner of record must occupy one dwelling on-site
Parking
- –1 space/ADU; exceptions: displaced spaces must be replaced if ADU is in a garage/carport; ADU with a guest house requires one additional off-street space; guest houses require two off-street spaces
Rental Restrictions
- –Short-term rentals (<30 days) prohibited for internal/attached ADUs
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.
Iron County