ADU Pass
Greenville
ADU Pass helps homeowners in Greenville, Providence 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
Smithfield permits ADUs by-right under Chapter 320 conformed to the 2024 statewide statute. As of 2025-03-05 all zoning applications must be filed online per RIGL §45-24-58.1.
Cost scenarios
| Scenario | Sq ft | Permit | Build | Total |
|---|---|---|---|---|
| minimum | 150 | $2,600 | $45,750 | $48,350 |
| 600 | 600 | $2,600 | $183,000 | $185,600 |
| midpoint | 675 | $2,600 | $205,875 | $208,475 |
| maximum | 1,200 | $2,600 | $366,000 | $368,600 |
Fee breakdown (as of 2026-04)
Permitting process
- Pre-application research (~5d)
Confirm Smithfield Code Chapter 320 zoning district and ADU compliance for the Greenville-village parcel. Most Greenville lots inside the PWSB-served service area allow conventional sewer/water connections rather than OWTS. Verify RIGL §45-24-37(j) 20,000 sqft minimum-lot rule for by-right ADU and check whether the lot lies within the Stillwater Reservoir / Woonasquatucket River watershed buffer. - Pre-application meeting with Smithfield Building Official (~7d)
Schedule a pre-app call or in-person meeting with Building Official Jacob Neves at 64 Farnum Pike, Smithfield (401-233-1039). Deputy Building Official Michael DiOrio handles overflow ADU triage. The office routes Greenville Center historic-district parcels through Smithfield Historic Preservation before plan review. - Submit zoning application via ViewPoint online portal (~1d)
Effective 2025-03-05 all Smithfield zoning applications must be filed online per RIGL §45-24-58.1. Use the ViewPoint Cloud portal linked from smithfieldri.gov/departments/building-zoning. Attach site plan, floor plan, elevations, and a Chapter 320 ADU compliance narrative. - Administrative ADU zoning review (~14d)
Smithfield Zoning Enforcement reviews the application administratively; by-right ADUs do not require Zoning Board action. Greenville Center Historic District parcels are forwarded to the Smithfield Historic District Commission for an architectural review before zoning sign-off. - Building permit submittal & multi-discipline plan review (~21d)
Submit building permit through the same ViewPoint portal. Plan review proceeds in parallel across Building (Aaron Ring, Building Inspector), Electrical (Steve Serapiglia), and Plumbing/Mechanical (Allen Pacheco). All applications after 2026-03-01 must reference the 2021 RI Statewide Codes. - Pay statewide-formula permit fee plus Smithfield impact fee (~1d)
Permit fee follows 510-RICR-00-00-21 (~$19-23 per $1,000 of construction valuation). Smithfield layers a development impact fee per Town Code Article 193 §193-12 using the Mason & Associates 2015 Smithfield Impact Fee Update on file at the Town Clerk. - Construction inspections
Five inspection cycles: footing, foundation, frame/rough-in, insulation, and final. Inspections requested through the ViewPoint portal. Smithfield trade inspectors handle electrical, plumbing, and mechanical sign-offs. - Certificate of Occupancy (~5d)
Smithfield Building Official issues the CO after final inspection passes. Separately-metered ADU units receive their own CO record under the parent address.
Viability (permitted uses)
- Long-term rental: yes Long-term rental of ADU explicitly permitted under RIGL §45-24-37(j); RI HOA preemption (§45-24-73) voids conflicting covenants.
- Short-term rental: with-restrictions Smithfield regulates STRs separately from ADU permitting; check town STR ordinance and any HOA covenants.
- Office rental: with-restrictions Detached office rental requires home-occupation permit or non-residential rezoning.
- 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: with-restrictions Limited residential agriculture permitted; livestock varies by district.
- Relative support: yes Family-occupied ADU explicitly permitted; statewide §45-24-37(j) requires by-right treatment of family ADUs.
Contacts
Staff: Jacob Neves (Building Official), Michael DiOrio (Deputy Building Official), Aaron Ring (Building Inspector), Steve Serapiglia (Electrical Inspector), Allen Pacheco (Plumbing/Mechanical Inspector)
Utilities
- Water: Providence Water Supply Board (PWSB) — Smithfield service area · 21d connect · $4,500
- Sewer: Smithfield Sewer Authority where served; private OWTS (RIDEM) elsewhere in Greenville village · 28d connect · $6,500
- Electric: Rhode Island Energy · 14d connect · $1,800
- Gas: Rhode Island Energy (gas) · 21d connect · $1,500
Property values & taxes
Construction timeline
Realistic total: best 7mo · typical 11mo · worst 17mo
Modular pathway inspectors are occasional with modular
Financing
State ADU loans:
Insurance impact
HOA prevalence & preemption
RIGL §45-24-73 voids HOA, condominium, or similar private-covenant restrictions on ADUs that conflict with the statewide statute. Pre-existing ADU-friendly covenants remain valid. Applies to all common-interest communities under RI Title 34, Chapters 36 and 36.1.
Regulatory overlays (3)
- watershed
Stillwater Reservoir and Woonasquatucket River buffer parcels in Greenville village trigger Smithfield Conservation Commission coordination before the building permit issues. - historic-district
Greenville Center Historic District parcels are routed through the Smithfield Historic District Commission for ADU exterior design review. - flood-zone
FEMA SFHAs along Stillwater and Woonasquatucket basins; elevation certificates and flood-resistant construction required where mapped.
Technical envelope (climate & building code)
Climate & energy code
Building code
Amendments:
- Amendment
- Amendment
Legal history (timeline)
Current ordinance: Smithfield Town Code Chapter 320 (Zoning); Article II Building Permits (ecode360 8254996), adopted 1965-10-08, last amended 2024-04-01
- 2024-06-25 — RI H 7062 / S 2998 — statewide ADU preemption (state-law)
Amended RIGL §45-24-37(j) to require by-right ADUs on every single-family lot statewide; §45-24-73 voids conflicting HOA restrictions.
Effect: Smithfield was required to align Chapter 320 with statewide minimums, including by-right treatment of family-occupied ADUs. - 2025-03-05 — Smithfield mandates online zoning applications (RIGL §45-24-58.1) (city-procedure)
All zoning applications, including ADU zoning verification, must be submitted via the town's ViewPoint online permitting portal.
Effect: Eliminated paper-only intake; ADU applicants now lodge zoning verification and building permit electronically. - 2026-03-01 — Smithfield enforces 2021 RI Statewide Codes (code-update)
Effective 2026-03-01, no new building permits accepted under prior code editions; ADUs must be designed to the 2021 RI Statewide Codes (IRC 2018 + RI amendments rolling into 2021 RICR set).
Effect: Affects ADU construction documents — energy, mechanical, and structural sheets must reference current code edition.
Known issues (3)
- issue —
- issue —
- issue —
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
- 02828
Post Office
- 1 Austin Ave Rear, 02828