

ADUs are allowed in RichfieldTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Richfield, UT
Is your property eligible for an ADU?
# of Properties
3,170
Owner-occupied
70%
Zoning districts
16
Avg Home Value
$166,312
Median Lot Size
0.26 acres
Avg Income
$74,846
Residential Types:
3,170 housing units
Residential
100%
Zoning Districts:
3,979 parcels · 16 districts
R1-10
43%(1,715)
RM-11
21%(848)
CS
9%(351)
D
7%(268)
Other
20%(797)
ADU Rules
What can you build in Richfield, UT?
Richfield, 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 is the lesser of 30% of the primary dwelling’s footprint (excluding the garage) or 1,000 sq ft.
Max Units
- –1 detached ADU per single-family lot
Owner Occupancy
- –Owner must occupy either the principal dwelling or ADU
Parking
- –1 off-street space per detached ADU; 1 on-site space for an internal ADU; no max stated; reductions may be approved for unique circumstances per Richfield City Code 17.16.120
Rental Restrictions
- –Detached ADU: short-term rentals prohibited; shall not be leased or rented independently or sold separately; deed restriction prohibiting lease/rental/short-term rental must be recorded before occupancy.
- –Internal ADU: long-term rental only (30 days or longer); short-term rental prohibited; rental allowed only if the primary dwelling is the owner's primary residence.
- –Internal ADU: cannot be rented or sold separately from the primary dwelling; deed restriction prohibiting rental/sale of the Internal ADU separately is required.
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.
Sevier County