Westerly Zoning & Land Use Guide
Official references and local checks
Use the official references below to identify the rules that apply to your address, then confirm parcel-specific requirements with the local authority before filing an application.
Official references
- Population:
- 22,787
- County:
- Washington County
- State building code:
- RI State Building Code (based on 2021 IBC)(statewide default)
- State ADU law:
- Yes — Rhode Island General Laws 45-24-73 (amended by 2024 legislation including H 7062 and companions, effective June 24, 2024) establishes consistent statewide treatment of accessory dwelling units. Municipalities must allow one ADU as of right in specified circumstances, including on lots of 20,000 square feet or more zoned residential, within the existing footprint of the primary structure, or as a reasonable accommodation for a family member with a disability.
- FEMA flood map:
- Search flood zones
- Planning department:
- Town of Westerly Planning Department
Before you apply
- Call the Town of Westerly Planning Department: (401) 348-2511
- Check FEMA flood zone for your parcel — flood-zone status changes setbacks, foundation requirements, and insurance.
- Check your HOA CC&Rs and recorded deed restrictions — they are common in Westerly and frequently restrict ADUs, fences, and exterior changes beyond what zoning allows.
Key Zoning Facts
Westerly is a town of approximately 22,787 residents in Washington County, Rhode Island. The town manages land use and development through its local zoning ordinance, which divides the municipality into districts regulating permitted uses, building heights, lot sizes, setbacks, and density.
Westerly's zoning code includes a range of residential districts from low-density (R-60 at 60,000 sq ft and R-30 at 30,000 sq ft) to higher-density (R-20 at 20,000 sq ft and R-10 at 10,000 sq ft). The R-20 district has setbacks of 25 feet (front), 10 feet (side), and 20 feet (rear). The town also has a Downtown District (DD) for mixed-use development, a Commercial (C) district, and an Industrial (I) district.
ADU Rules
Under Rhode Island state law (RI Gen. Laws 45-24-73), all municipalities are required to allow Accessory Dwelling Units (ADUs). Westerly must comply with this statewide mandate. Contact the Town of Westerly Planning Department at (401) 348-2511 for local implementation details, permit requirements, and any applicable dimensional standards.
Development Process
Development in Westerly generally requires obtaining the appropriate permits from the town's planning and building departments. The process typically involves:
- Zoning Verification — Confirm that your proposed use is permitted in the applicable zoning district
- Site Plan Review — For commercial and multi-family projects, submit a site plan for review
- Building Permit — Apply for a building permit with construction documents compliant with the RI State Building Code
- Inspections — Schedule required inspections during construction
- Certificate of Occupancy — Obtain final approval before occupying the structure
For projects that do not conform to existing zoning, property owners may need to seek a variance, special exception, or rezoning through the local zoning board of review or planning board.
Key Considerations
Before starting any development project in Westerly, property owners should:
- Verify the zoning classification of their property
- Review setback, height, and lot coverage requirements for the applicable district
- Check for any overlay districts or special regulations
- Determine if the property is in a flood zone using FEMA's flood map service
- Confirm whether HOA covenants or deed restrictions apply
- Contact the planning department at (401) 348-2511 for pre-application guidance
Disclaimer: This guide provides general information about zoning in Westerly and should not be relied upon as legal advice. Zoning codes are subject to change. Always verify current regulations with the Town of Westerly planning department before making development decisions.
Regulatory Layers That Apply in Westerly
Your property is subject to ALL of these regulatory layers. Each one can impose additional requirements beyond the others.
Federal
- FEMA flood mapping: check parcel-specific flood-zone status
- View FEMA Flood Map
State — Rhode Island
- Building Code: RI State Building Code (SBC-1 through SBC-8)
- State ADU Override: Yes (RI Gen. Laws 45-24-73 allows ADUs statewide)
County — Washington County
City / Municipal
The municipality's zoning ordinance, building-code enforcement, and local permits form the primary local layer of land-use regulation for your property.
Overlay Districts
No overlay districts identified.
Private Restrictions
- Private covenants, deed restrictions, condominium rules, or association rules can impose requirements beyond zoning.
- Check HOA CC&Rs and deed restrictions for additional requirements.
Statewide Context (Rhode Island)
Local data for Westerly is limited. The following state-level facts apply across Rhode Island and are inherited by this page until city-specific details are verified.
- State Building Code
- RI State Building Code (based on 2021 IBC)
- State ADU Preemption
- Yes — state law overrides local rules
- Coastal Zone
- Yes
- Wildfire Zones
- No
ADU Rules in Westerly
State law (statewide context, not city-specific):
Rhode Island General Laws 45-24-73 (amended by 2024 legislation including H 7062 and companions, effective June 24, 2024) establishes consistent statewide treatment of accessory dwelling units. Municipalities must allow one ADU as of right in specified circumstances, including on lots of 20,000 square feet or more zoned residential, within the existing footprint of the primary structure, or as a reasonable accommodation for a family member with a disability.
For local size, setback, and parking specifics, contact the Town of Westerly Planning Department.
Permit Costs & Timelines
Check Current Permit Fees & Timelines
Permit fees and review times can vary by project type, scope, valuation, and required approvals. Check the current schedule with the local permitting authority before filing.
Check current Westerly permit information →Official Sources
City-specific