Hope Valley
ADU Pass helps homeowners in Hope Valley, Washington County, Rhode Island navigate the permit paperwork for building an accessory dwelling unit. This area covers 2 ZIP codes.
Map
ADU details
ADU legality: allowed
ADUs allowed by-right under RIGL § 45-24-73; Hopkinton processes Hope Valley applications administratively under Appendix A.
Cost scenarios
| Scenario | Sq ft | Permit | Build | Total |
|---|---|---|---|---|
| minimum | 150 | $2,700 | $38,250 | $40,950 |
| 600 | 600 | $2,700 | $153,000 | $155,700 |
| midpoint | 675 | $2,700 | $172,125 | $174,825 |
| maximum | 1,200 | $2,700 | $306,000 | $308,700 |
Fee breakdown (as of 2026-04)
Permitting process
Viability (permitted uses)
- Long-term rental: yes Long-term rental (lease ≥ 1 year) of ADU explicitly permitted under state framework.
- Short-term rental: no RIGL § 45-24-73 explicitly prohibits ADUs as STRs / hosting-platform rentals.
- Office rental: with-restrictions Detached office rental requires home-occupation permit under Hopkinton Appendix A; not a permitted ADU use.
- Home office: yes Home occupation permitted with restrictions on signage and customer traffic.
- Studio / workshop: yes Personal artist studio is a permitted accessory use.
- Agriculture: yes Hope Valley sits in rural Hopkinton — Right-to-Farm protections apply per RIGL Title 2 Chapter 23. RFR-80 and RFR-160 zones carry significant agricultural latitude.
- Relative support: yes Family-occupancy ADU explicitly permitted under both Hopkinton zoning and the state statute.
Contacts
Utilities
- Water: Private wells dominant in Hope Valley; limited municipal water in immediate village core. RIDOH Private Well Program oversight. · 30d connect · $12,000
- Sewer: Private on-site septic (ISDS / OWTS) — RIDEM Office of Water Resources permitting required for new bedroom additions including ADUs. No municipal sewer in Hope Valley. · 60d connect · $18,000
- Electric: Rhode Island Energy (formerly National Grid) · 14d connect · $1,800
- Gas: Propane dominant (no natural-gas mains in Hope Valley); typical providers include Suburban Propane, AmeriGas, Eastern Propane · 21d connect · $1,500
Property values & taxes
Construction timeline
Realistic total: best 8mo · typical 13mo · worst 19mo
Financing
State ADU loans:
Insurance impact
HOA prevalence & preemption
RIGL § 45-24-73 voids HOA / condo restrictions on ADUs that conflict with statute minimums. Hope Valley HOA penetration is low — the rural village pattern with RFR-80 / RFR-160 lot minimums leaves limited room for HOA-style subdivisions.
Regulatory overlays (3)
- watershed-protection
Hope Valley sits at the gateway to Arcadia Management Area (~14,000 acres of state-owned land — RI's largest state-management area); parcels adjacent to or within the buffer carry watershed-protection overlays. Wood River (Wood-Pawcatuck Wild & Scenic Rivers component) flows through Hope Valley. - wetland-setback
Wood River and tributaries trigger RIDEM freshwater wetland setbacks (typically 100-200 ft from edge of wetland). - owts-septic
Hope Valley is overwhelmingly served by private on-site septic (ISDS / OWTS); new ADU bedrooms require RIDEM OWTS adequacy review and frequently trigger septic-system upgrades.
Technical envelope (climate & building code)
Climate & energy code
Building code
Amendments:
- Amendment
- Amendment
Legal history (timeline)
Current ordinance: Town of Hopkinton Code Appendix A (Zoning), Section 5 (District Use Regulations) — ADU integration via state-statute overlay; per RI EOH 2025 ADU Annual Report Hopkinton listed N/A on stand-alone local ADU ordinance, indicating direct state-statute reliance, adopted 1995-01-01, last amended 2024-09-01
- 2017-06-20 — Town of Hopkinton joins RI Statewide E-Permitting Portal (city-ordinance)
Hopkinton Building & Zoning Department onboarded to the RI Building Code Commission's statewide OpenGov-based permitting portal at hopkintonri.portal.opengov.com.
Effect: Established the digital filing pathway used today for Hope Valley ADU applications. - 2024-06-25 — RI H 7062 / S 2998 signed into law (RIGL § 45-24-73) (state-law)
Statewide ADU enabling statute requires Hopkinton to allow ADUs by-right on owner-occupied 1-3 family lots subject to state minimums.
Effect: Hope Valley parcels qualify for by-right administrative ADU approval where state minimums met.
Known issues (4)
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- issue —
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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 Codes
- 02832
- 02894
Post Office
- 1027 Main St, 02832