Manville

ADU Pass helps homeowners in Manville, Providence County, Rhode Island navigate the permit paperwork for building an accessory dwelling unit. This area covers 1 ZIP code.

1 ZIP code

ADU details

ADU legality: allowed

Stateallowed (Rhode Island accessory-dwelling framework (RIGL 45-24-37(j) and 45-24-73)) — All 39 Rhode Island cities and towns (there is no unincorporated territory in RI; every acre is within a municipality). Historic districts may still apply aesthetic review but cannot categorically prohibit ADUs.
Countyallowed (Providence County is judicial-only since 1846; no county government exists) — Manville is a mill village within the Town of Lincoln; permitting is administered by Lincoln (no separate village government).
Cityallowed (Town of Lincoln Zoning Ordinance Chapter 260 (governs Manville parcels), conformed under Ord. 2023-12 to RIGL 45-24-73) — Manville parcels are zoned and permitted under Town of Lincoln rules. ADUs are permitted by-right in R-zones; mill-village contributing structures may need Historic Commission review under the Blackstone River Valley National Heritage Corridor.

RIGL 45-24-73 preempts owner-occupancy and special-use-permit requirements that previously applied to accessory family dwellings under Lincoln Chapter 260; Manville's contributing mill-village structures still require historic-design review (aesthetic, not prohibitive).

Cost scenarios

ScenarioSq ft PermitBuildTotal
minimum 150 $2,400 $45,000 $47,400
600 600 $2,400 $180,000 $182,400
midpoint 675 $2,400 $202,500 $204,900
maximum 1,200 $2,400 $360,000 $362,400
Fee breakdown (as of 2026-04)
Building permit$1,820
Total$2,103

Permitting process

Typical duration60 days
Backlog18 days
  1. Confirm Manville parcel under Lincoln Chapter 260 (no separate village government) (~3d)
    Manville is a mill village within the Town of Lincoln. All zoning, permits, and inspections flow through Lincoln. Pull the parcel card from the Lincoln Tax Assessor and confirm R-zone designation under the post-Ord. 2023-12 use table.
  2. Check Manville Historic District / NPS Heritage Corridor mapping BEFORE design (~21d)
    Manville is within the Blackstone River Valley National Heritage Corridor. Contributing mill-village structures (typically pre-1930) trigger Lincoln Historic Commission review for visible exterior changes including ADU additions. Adds 2-4 weeks if your parcel has a contributing structure or sits in a contributing streetscape.
  3. Pre-application meeting with Lincoln Building Official Russell Hervieux (~5d)
    rhervieux@lincolnri.org / 401-333-8430 at 100 Old River Road. Manville-specific considerations: confirm Lincoln Water Commission lateral capacity (Manville Tank serves the village area; many mill-era homes have undersized service lines), verify Bucklin Point sewer connection or RIDEM ISDS septic if not on municipal sewer, and review Blackstone River SFHA flood-zone status.
  4. Submit building permit via RI statewide e-permitting (permits.ri.gov) (~1d)
    Select 'Town of Lincoln' on the portal. Lincoln onboarded 2017-10-23. Upload Historic Commission letter of approval if parcel is in the Manville Historic District, plus IRC plans, site plan, and septic/well documentation as needed.
  5. Lincoln Building Department plan review (IRC 2018 with RI amendments) (~14d)
    Building, electrical, plumbing, mechanical disciplines reviewed in parallel. R313 sprinkler mandate removed by RI amendments. Manville mill-era structures often need supplemental structural drawings showing how the new ADU loads tie into existing 18th/19th-century framing.
  6. Lincoln Water Commission lateral / capacity verification (Manville Tank service area) (~14d)
    Many Manville mill-era homes have 1/2-inch undersized service from the Manville Tank distribution system; ADU bedroom add may require lateral upgrade to 3/4-inch or 1-inch. Lincoln Water Commission (96 Old River Road, 401-333-8425) coordinates upgrade.
  7. Pay state-formula fees plus Lincoln local surcharges (~1d)
    Fees per RI 510-RICR-00-00-21 (~$19-23 per $1,000 valuation) plus Lincoln $30 zoning certificate at issuance. Historic Commission review fee separately if applicable.
  8. Six-stage construction inspections (footing, foundation, framing, MEP rough, insulation, final)
    Scheduled via Lincoln Building Department. Albion-Manville Fire District (within Lincoln Fire) coordinates fire-marshal aspects. Flood-elevation certificate also required at framing inspection if parcel is in Blackstone River SFHA.
  9. Certificate of Occupancy issued by Lincoln Building Official (~5d)
    $75 CO fee. CO triggers Lincoln tax-assessor parcel update and Lincoln Water Commission separate-meter activation if requested.

Viability (permitted uses)

  • Long-term rental: yes Long-term rental of ADU explicitly permitted; RIGL 45-24-73 preempts owner-occupancy requirements.
  • Short-term rental: with-restrictions STR rules vary by city. Manville parcels follow Lincoln STR rules; check Lincoln STR ordinance and HOA covenants.
  • Office rental: with-restrictions Detached office rental requires home occupation permit or 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; Manville mill-village character makes carriage-house studio conversions popular.
  • Agriculture: with-restrictions Limited urban agriculture permitted in residential zones; livestock varies by district.
  • Relative support: yes Family-occupancy ADU explicitly permitted in single-family zones.

Contacts

DepartmentTown of Lincoln Building Department (Manville is a Lincoln village; no separate office). Building Official Russell Hervieux at 100 Old River Road, Lincoln RI 02865.

Staff: Russell Hervieux (Lincoln Building Official (governs Manville)) rhervieux@lincolnri.org, Lincoln Planning Department (Planning intake including Manville Historic District / NPS Heritage Corridor coordination), Lincoln Water Commission (Water service for Manville (Manville Tank))

Utilities

  • Water: Lincoln Water Commission - Manville Tank distribution (NOT Pawtucket Water Supply Board) · 21d connect · $4,500
  • Sewer: Narragansett Bay Commission - Bucklin Point treatment for sewered Manville parcels; private septic on outlying parcels under RIDEM ISDS · 21d connect · $5,500
  • Electric: Rhode Island Energy (formerly National Grid RI) · 14d connect · $1,800
  • Gas: Rhode Island Energy (gas) · 21d connect · $1,500

Property values & taxes

Median value$355,000
Median tax$6,140/yr
Effective rate1.7%

Construction timeline

Detached build22 weeks
Conversion14 weeks
Contractor lead4 months

Realistic total: best 7mo · typical 12mo · worst 18mo

Modular pathway inspectors are occasional with modular

Financing

Insurance impact

Annual premium delta$540
Landlord policyrecommended
Umbrella threshold$1M umbrella when renting (Manville flood-zone exposure inflates premiums)

HOA prevalence & preemption

State HOA preemptionyes

RIGL 45-24-73 voids conflicting HOA ADU restrictions. Manville's mill-village character means almost no HOA presence (legacy mill-housing rather than planned subdivisions); Lincoln Historic Commission rules functionally substitute for HOA design control on contributing structures.

Regulatory overlays (2)

  • flood-zone
    Manville sits along the Blackstone River with extensive FEMA SFHA mapping; elevation certificates and flood-resistant construction required for many village parcels.
  • historic-district
    Manville Historic District (mill-village contributing structures) plus the federally-designated Blackstone River Valley National Heritage Corridor (NPS-administered) trigger Lincoln Historic Commission review for visible exterior modifications including ADU additions.
Technical envelope (climate & building code)

Climate & energy code

IECC climate zone5A
Heating degree days5,800
Cooling degree days850
Frost depth30"
Design snow load30 psf
Wind design speed115 mph
Seismic design cat.B
Annual rainfall36"
Wildfire exposurelow
Energy codeIECC
Version / adopted2018 / 2020

Building code

Base codeIRC
Version year2,018
Adopted2020
Fire sprinklernone
Egress window5.7 sqft min
Min ceiling7 ft
Attic R-valueR-49 min
Wall R-valueR-20 min

Amendments:

  • Amendment
  • Amendment
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.

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

  • 02838

Post Office

  • 30 Railroad St Ste 3, 02838