ADU Pass
Little Compton
ADU Pass helps homeowners in Little Compton, Newport County, Rhode Island navigate the permit paperwork for building an accessory dwelling unit. This area covers 1 ZIP code.
Map
ADU details
ADU legality: allowed-with-restrictions
By-right but with strong rural-coastal-preserve overlay: nearly all parcels rely on private wells and OWTS, requiring DEM-approved on-site wastewater treatment systems. CRMC jurisdiction applies to the Sakonnet River and ocean-facing parcels. STR explicitly prohibited.
Cost scenarios
| Scenario | Sq ft | Permit | Build | Total |
|---|---|---|---|---|
| minimum | 150 | $3,200 | $55,800 | $59,000 |
| 600 | 600 | $4,500 | $223,200 | $227,700 |
| midpoint | 675 | $4,800 | $251,100 | $255,900 |
| 1000 | 1,000 | $5,500 | $380,000 | $385,500 |
| maximum | 1,200 | $6,200 | $468,000 | $474,200 |
Fee breakdown (as of 2026-04)
Permitting process
Viability (permitted uses)
- Long-term rental: yes Long-term tenancy (30+ days) is permitted under by-right ADU framework. Year-round housing supply is constrained in Little Compton given rural preserve character; long-term ADUs serve a real need.
- Short-term rental: no Chapter 14 explicitly prohibits short-term residential rentals (defined as occupancy under 30 consecutive days) in ADUs. STR pathway is closed - long-term tenancy only. The town's rural-preserve character drives this restriction.
- Office rental: with-restrictions Office rental of an ADU to non-resident requires home-occupation permit; not generally permitted as accessory use.
- Home office: yes Owner home-occupation permitted with restrictions on signage, customer traffic.
- Studio / workshop: yes Personal artist or workshop use is by-right; Little Compton has a notable artist community.
- Agriculture: yes Rural agricultural zoning supports small-livestock and farm-stand uses on most Little Compton parcels.
- Relative support: yes Family-member ADU is a common pathway; Little Compton families use ADUs for multigenerational arrangements on family-held coastal property.
Incentives
Contacts
Utilities
- Water: Private wells (no town water service) · 60d connect · $12,000
Little Compton has NO municipal water service. Every parcel relies on a private well. New well drilling for ADU capacity (or capacity-test of existing well) typically $8K-$18K including DEM well permit. Coastal parcels may have salt-water-intrusion risk requiring deeper wells. - Sewer: OWTS / on-site septic systems exclusively (no town sewer service); RI DEM jurisdiction · 60d connect · $25,000
Little Compton has NO municipal sewer. All wastewater handled by OWTS regulated by RI DEM. ADU triggers either OWTS capacity-sufficiency review (no upgrade needed if existing system has reserve capacity) or full new/upgraded OWTS install ($20K-$35K). CRMC adds further OWTS-design constraints in coastal-jurisdictional areas. - Electric: Rhode Island Energy · 30d connect · $1,800
RI Energy serves all of Little Compton. Service-upgrade to 200A common. Some remote rural parcels require service-line extension at owner cost. - Gas: No piped natural gas; propane delivery typical · 14d connect · $2,500
Little Compton has no piped natural gas distribution. Most homes use propane (delivered by trucks), heating oil, or all-electric (heat pumps).
Property values & taxes
Construction timeline
Realistic total: best 9mo · typical 14mo · worst 22mo
Most-rural Newport County town with shallowest GC pool. Most builders commute from Tiverton (15 min), Portsmouth (25 min), Westport MA (15 min), or Newport (35 min). OWTS install adds 4-6 weeks to typical schedule.
Modular pathway inspectors are novice with modular
Financing
State ADU loans:
Insurance impact
Coastal exposure plus FEMA SFHA prevalence plus distance from professional fire response (rural town with volunteer fire department) all push premiums up. Wind insurance is a real consideration. STR prohibition means landlord-policy structure is straightforward (long-term tenancy only).
HOA prevalence & preemption
HOA prevalence very low; Little Compton is overwhelmingly single-family non-HOA. R.I.G.L. § 45-24-73 voids HOA covenants conflicting with state ADU minimums.
Regulatory overlays (4)
- coastal-commission
CRMC jurisdiction applies to Sakonnet River shoreline (entire western boundary), Atlantic Ocean / Goosewing / South Shore beach parcels, and Briggs Marsh-edge parcels. Approximately 35-45% of Little Compton parcels touch CRMC jurisdiction. - flood-zone
FEMA AE/VE Special Flood Hazard Areas along Sakonnet River, South Shore beach areas, and at the mouths of Quicksand Pond and Briggs Marsh. Elevation Certificates required; VE-zone parcels need pile foundations. - wetland-overlay
Briggs Marsh, Quicksand Pond, Tunipus Pond, Long Pond, and numerous freshwater wetlands trigger RI DEM Freshwater Wetlands review for ADU work within 100-200 ft buffer. Significant constraint on rural-interior parcels. - historic-district
Little Compton Commons Historic District (centered on the Town Common) registered with the National Register. Historic District Commission reviews exterior alterations on contributing structures within the district.
Technical envelope (climate & building code)
Climate & energy code
Building code
Amendments:
- Amendment
- Amendment
Contractor market (aggregate)
Legal history (timeline)
Current ordinance: Town of Little Compton Town Code Chapter 14 - Zoning (ADU provisions), adopted 1980-01-01, last amended 2024-08-05
- 2024-06-25 — RI H 7062 / S 2998 signed - statewide by-right ADU mandate (state-law)
RI 2024 ADU enabling package; sets minimum statewide ADU floor.
Effect: Required Little Compton to align Chapter 14 with state minimums. - 2024-08-05 — Little Compton Proposed Zoning Code Amendments (ADU) (town-ordinance)
Town published proposed amendments to Chapter 14 to comply with R.I.G.L. § 45-24-73; included clarifications on OWTS sufficiency exception, STR prohibition, and accessory-structure setback flexibility for legally existing nonconforming structures hosting ADUs.
Effect: Codified Little Compton's ADU pathway with the state floor while preserving the town's anti-STR and OWTS-prudence provisions.
Known issues (3)
- policy-review — DEM OWTS application backlogs run 60-90 days at peak; build the OWTS review into the critical path early. CRMC Assent for coastal parcels can extend timeline 60-90 days more.
- other — STR pathway is closed by Chapter 14. ADU economic case in Little Compton must rest on long-term rental, owner-use, or multigenerational support - not vacation rental income.
- other — No municipal water or sewer means OWTS + well capital often exceeds $30K added to the ADU project. Calibrate the cost model accordingly.
Rhode Island state — ADU law and programs
State ADU law
Rhode Island enacted statewide ADU preemption in 2024 through H 7062 (chief sponsor Rep. June Speakman and colleagues; co-sponsored in the Senate as S 2710), which amended the Zoning Enabling Act (Title 45, Chapter 24). Municipalities must permit ADUs by-right on any lot containing a single-family dwelling, subject only to uniform minimum standards set by the statute. One of the most ADU-friendly state statutes in the country as of 2025.
- R.I.G.L. § 45-24-73 — Design standards required for accessory dwelling units; Consistent statewide treatment of accessory dwelling units required — Core ADU standards added by H 7062 (2024). Requires municipalities to permit ADUs by-right. Caps 1-bedroom and studio ADUs at 900 sqft or 60% of the principal dwelling's floor area, whichever is less. Caps 2-bedroom ADUs at 1,200 sqft or 60%, whichever is less. Prohibits owner-occupancy requirements. Caps additional parking at 1 off-street space per bedroom. Prohibits ADU-specific impact fees. Voids HOA, condominium, and similar private-covenant restrictions that conflict with the statute as against public policy.
- H 7062 (2024 RI General Assembly) — An Act Relating to Housing — Accessory Dwelling Units — The enacting bill. Also cited by municipalities adopting conforming ordinances (Providence 2024 Chapter 3584, East Providence 2024 ADU Ordinance, South Kingstown 2024-07-12 regulations).
State HOA preemption
R.I.G.L. § 45-24-73 explicitly voids homeowners' association, condominium association, or similar private-covenant restrictions on ADUs when those restrictions conflict with the statute's ADU minimums. The preemption is framed as a public-policy void, meaning the offending covenant is unenforceable rather than simply regulated. Pre-existing ADU-friendly covenants remain valid (the statute only void conflicting restrictions). Applies to all common-interest communities governed by the Rhode Island Condominium Act (R.I.G.L. Title 34, Chapter 36) and Rhode Island Condominium Ownership Act (Title 34, Chapter 36.1), as well as HOAs in planned-community subdivisions.
- R.I.G.L. § 45-24-73 (HOA preemption clause added by H 7062 (2024)) — Provides that private covenant restrictions imposed by condominium associations, homeowners' associations, or similar residential property governing bodies that conflict with the ADU provisions are void as against public policy. Drafted broadly — covers declarations, bylaws, rules and regulations, and recorded covenants.
State financing programs
RIHousing, the state's housing finance agency, operates an ADU financing program built around the FHA 203(k) loan product. Covers attached and interior ADUs for both purchase and refinance. Detached ADUs are NOT eligible. Requires mandatory homebuyer education, use of an FHA-approved 203(k) consultant, and a RI licensed and insured contractor. No state-specific grant program for ADUs is in effect as of 2026-04-21; the federal 203(k) rails are the production vehicle.
State housing programs
Rhode Island does not currently operate a single statewide pre-approved-ADU-plan catalog (as California's CalHFA and Washington's Commerce plan libraries). Implementation of the 2024 ADU law is happening municipality-by-municipality, with the Executive Office of Housing (EOH) coordinating technical assistance. Providence published a citywide ADU Guide (February 2025) as the leading model; East Providence adopted a conforming ordinance in 2024; South Kingstown published regulations in 2024. RIHousing runs the ADU financing side (see stateFinancing).
Federal (United States) — ADU-relevant rules and programs
Federal ADU law
The United States has no federal statute that directly regulates accessory dwelling unit entitlement or design. Land-use authority over ADUs resides with states and local governments under the traditional police power. Federal engagement is limited to financing (Fannie/Freddie/FHA/VA/USDA), flood insurance (FEMA/NFIP), and discretionary housing programs (HUD), which are recorded in sibling sections of this file.
Federal financing programs
Federal housing-finance agencies and GSEs set nationwide underwriting rules that govern whether an ADU can be financed, appraised, and counted toward mortgage qualifying income. The relevant actors are Fannie Mae, Freddie Mac, FHA (HUD), VA, and USDA Rural Development.
Federal tax credits
There is no ADU-specific federal tax credit. ADUs may incidentally qualify for existing federal energy-efficiency and clean-energy tax credits when the ADU construction includes qualifying measures.
Federal housing programs
HUD administers several discretionary programs that can fund ADU-related activity at the grantee's election, but none is an ADU-specific program.
ZIP Code
- 02837
Post Office
- 4 S Of Commons Rd, 02837