ADUs are allowed in South KingstownTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for South Kingstown, RI
Is your property eligible for an ADU?
# of Properties
10,126
Owner-occupied
67%
Zoning districts
27
Avg Home Value
$700,341
Median Lot Size
0.49 acres
Avg Income
$115,028
Residential Types:
10,126 housing units
Single Family
86%
2-3 Family
2%
Apts (4+ units)
2%
Other
9%
Zoning Districts:
12,087 parcels · 27 districts
R80
27%(3,308)
R20
25%(3,069)
R10
16%(1,947)
R40
12%(1,418)
Other
19%(2,345)
ADU Rules
What can you build in South Kingstown, RI?
South Kingstown, RI 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
Interior / Attached ADU Size Limits
- –Maximum size of 750 sq ft
Detached ADU Size Limits
- –Maximum size of 750 sq ft for a detached accessory dwelling unit.
Max Units
- –1 accessory apartment per lot (with a principal residence).
- –Duplex/multifamily zones: 1 total only.
Owner Occupancy
- –Owner must occupy principal home or ADU at least six months.
Parking
- –1/ADU (+2 for principal); CD: 50% reduction; on-street may count
Rental Restrictions
- –Renting rooms/boarders prohibited in both principal residence and ADU; rooming/boarding houses cannot have an ADU
ADU State Law
What can you build in Rhode Island?
- –On an owner-occupied property as a reasonable accommodation for family members with disabilities;
- –On a lot with a total lot area of twenty thousand square feet (20,000 sq. ft.) or more for which the primary use is residential;
- –Where the proposed ADU is located within the existing footprint of the primary structure or existing accessory attached or detached structure and does not expand the footprint of the structure.
- –Subject to applicable dimensional requirements of the municipality
- –As per §45-24-38 of the RI Zoning Enabling Act, if an existing lot is smaller than the minimum lot size required by zoning, its setback requirements are reduced in proportion to the lot's size, and its maximum lot coverage is increased by the inverse proportion.
- –One ADU per lot
- –No short term rentals
- –Studio or 1 bedroom ADU may be up to 900 sq ft or 60% of the Gross Floor Area of the principal dwelling, whichever is less
- –2 bedroom ADU may be up to 1200 sq ft or 60% of the Gross Floor Area of the principal dwelling, whichever is less
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 Rhode Island municipalities
Rules change at the town line. Check the municipality your property is actually in.
Washington County