ADUs are allowed in BountifulTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Bountiful, UT
Is your property eligible for an ADU?
# of Properties
1,554
Owner-occupied
75%
Zoning districts
17
Median Lot Size
0.35 acres
Avg Income
$113,786
Residential Types:
1,554 housing units
Residential
100%
Zoning Districts:
16,381 parcels · 17 districts
R-4
45%(7,414)
R-3
28%(4,586)
RM-13
8%(1,342)
R-F
8%(1,303)
Other
11%(1,736)
ADU Rules
What can you build in Bountiful, UT?
Bountiful, 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
- –Maximum size of a detached ADU (Backyard Cottage) is 1,250 sq ft; detached ADUs are a conditional use.
Max Units
- –Single-family: 1 ADU total per lot (detached or internal).
- –Duplex/multifamily: 0 (prohibited).
Owner Occupancy
- –Owner must occupy the principal dwelling or ADU.
Parking
- –1 space/ADU off-street (in addition to principal); no max. Applies to detached/internal ADUs; off-street parking for both ADU and primary; Title 14 compliance; on-street parking only as Traffic Code allows; SFDs require 4 off-street spaces for principal (≥2 in a garage).
Rental Restrictions
- –Detached ADU: Short-term rentals (<30 days) allowed only with a City Short-Term Rental Permit; max one short-term rental per lot.
- –Owner must occupy either the principal unit or the ADU and may not receive rent for the owner-occupied unit.
- –Internal ADU: minimum rental term 30+ days; short-term rentals of 30 days or less prohibited; owner-occupancy rule applies.
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.
Davis County