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 — no zoning relief / 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