Providence ADU permit requirements
Last reviewed: June 22, 2026
Quick answer
Permitting an accessory dwelling unit (ADU) in Providence, Rhode Island means pulling a building permit from the local authority that issues it. ArchPermit tracks 15 source-cited requirements (8 required, the rest conditional) for this jurisdiction. Submittals go through OpenGov Permitting (formerly ViewPoint Cloud). These requirements were last reviewed June 22, 2026; confirm the exact forms and fees with the local permitting authority.
A source-cited checklist of what an ADU (accessory dwelling unit) permit package needs in City of Providence. Every item links to its authoritative source; items that vary are flagged to confirm locally.
Rhode Island's 2024 statewide ADU law (RIGL § 45-24-37 / § 45-24-73) makes a conforming ADU a permitted use by-right through an administrative building-permit process only, with no zoning relief and no Zoning Board hearing. By-right when one of: the ADU is an owner-occupied reasonable accommodation for family members with disabilities; OR the lot is ≥20,000 sf with a residential primary use; OR the ADU is within the existing footprint. One ADU per lot, on a foundation, max 2 bedrooms, no short-term rentals. The size cap is the LESSER of 60% of the principal dwelling's floor area or 900 sf (studio/1-BR) / 1,200 sf (2-BR). The ordinance/statute 'lesser of' rule controls over the plain-language guidelines' flat figures. A Certificate of Occupancy is always required.
- Certificate of Occupancyrequired
Always required to establish an ADU regardless of type; may be applied for as part of the building permit.
source · reviewed 2026-06-22 - Complete Building Permit Applicationrequired
Submitted via the OpenGov/ViewPoint online portal; required before the application is accepted.
source · reviewed 2026-06-22 - Complete Narrative Defining Full Scope of Workrequired
Written description of the entire ADU scope of work.
source · reviewed 2026-06-22 - Fire Prevention / Fire Marshal Approvalrequired
Approval for smoke/carbon-monoxide detectors; separate-ADU configurations may also trigger fire-separation/sprinkler review.
source · reviewed 2026-06-22 - Full Set of Construction Drawingsrequired
Plans, elevations, cross-sections, and structural drawings for the ADU scope of work.
source · reviewed 2026-06-22 - Owner Authorization / Affidavitrequired
Owner affidavit form authorizing the work.
source · reviewed 2026-06-22 - Owner-Contractor Responsibilities Formrequiredverify locally
Listed in the June 2025 checklist as required before plan review completes (not located as a standalone downloadable form).
source · reviewed 2026-06-22 - RI 2024 Energy Code Compliance Documentationrequired
Documentation of compliance with the RI 2024 energy code (IECC); required before plan review completes.
source · reviewed 2026-06-22 - Elevation Certificate (flood zone)conditional
Required only if the structure is in a flood zone.
source · reviewed 2026-06-22 - Erosion & Sediment Control Plan (PE or landscape architect)conditional
Required per City Ordinance Ch. 5 Art. VII when ground is disturbed (e.g. a detached/new-construction ADU).
source · reviewed 2026-06-22 - Historic (PHDC) or Downtown (DDRC) Plan Review Approvalconditional
Required for exterior work in designated historic/downtown districts.
source · reviewed 2026-06-22 - Narragansett Bay Commission Approvalconditional
Required for any change in use and/or increase in plumbing fixtures (typical for a new ADU with kitchen + bath).
source · reviewed 2026-06-22 - Providence Water Supply Board Approvalconditional
Required for a new or increased water service.
source · reviewed 2026-06-22 - Section 128 Project Certification (stamped plans)conditional
Required when engineer/architect-stamped plans are required (e.g. separate-ADU configurations), with all signatures.
source · reviewed 2026-06-22 - Site Plan by RI Professional Land Surveyor (setbacks)conditional
For additions/new construction, the site plan must show setbacks and be prepared by a RI-licensed Professional Land Surveyor; an internal/within-footprint ADU may not trigger this.
source · reviewed 2026-06-22
Providence ADU permit questions
- Do I need a permit to build an ADU in Providence?
- Yes. An accessory dwelling unit (ADU) in Providence requires a building permit. ArchPermit tracks 15 cited requirements for this jurisdiction (8 required, the rest conditional). Always confirm the exact forms, fees, and code edition with the local permitting authority that issues the permit.
- What does an ADU permit package require in Providence?
- Core required items include: Certificate of Occupancy; Complete Building Permit Application; Complete Narrative Defining Full Scope of Work; Fire Prevention / Fire Marshal Approval; Full Set of Construction Drawings; Owner Authorization / Affidavit, plus 2 more. Each requirement links to its authoritative source, and nothing is permit-ready until an independent licensed professional reviews and seals it.
- How are ADU permits submitted in Providence?
- Providence accepts permit submittals via OpenGov Permitting (formerly ViewPoint Cloud). ArchPermit prepares a draft package you can submit there after a licensed architect reviews and seals it.