ADUs are allowed in WarwickTypes:DetachedInternal
Types:DetachedInternal
Accessory Dwelling Unit (ADU) Rules for Warwick, RI
Is your property eligible for an ADU?
# of Properties
28,209
Owner-occupied
99%
Zoning districts
27
Avg Home Value
$152,503
Median Lot Size
0.20 acres
Avg Income
$98,022
Residential Types:
28,209 housing units
Single Family
95%
2-3 Family
3%
Other
2%
Zoning Districts:
37,975 parcels · 27 districts
A-7
61%(22,994)
A-10
17%(6,306)
A-40
7%(2,556)
A-15
5%(1,930)
Other
11%(4,189)
ADU Rules
What can you build in Warwick, RI?
Warwick, 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 600 sq ft for in-home apartments in A residential districts.
- –Maximum size of 30% of the principal dwelling’s floor area for in-home apartments in A residential districts.
- –Maximum size of 1000 sq ft for in-home apartments in O and GB districts.
Detached ADU Size Limits
- –Detached ADU maximum size of 600 sq ft in A residential districts.
- –Detached ADU maximum size of 30% of the principal dwelling’s floor area in A residential districts.
- –Detached ADU maximum size of 1,000 sq ft in O and GB districts.
Max Units
- –1 ADU
Owner Occupancy
- –Occupants must be family of the principal dwelling occupant
Rental Restrictions
- –Short-term rentals of ADUs prohibited
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.
Kent County