RI · State directory
Rhode Island ADU rules
Official accessory dwelling unit regulations for 20 jurisdictions in Rhode Island, plus statewide law.
Not sure which city yet?
We have read the ordinances for 20 Rhode Island cities and lined them up side by side: detached vs internal, size limits, owner occupancy, and approval process.
Statewide ADU law
Rhode Island has state-level ADU legislation that applies across local jurisdictions. Local rules below may add requirements on top of state law.
- webserver.rilegislature.govOfficial sourceVerified October 2026https://webserver.rilegislature.gov/Statutes/TITLE45/45-24/45-24-73.htm
- webserver.rilegislature.govOfficial sourceVerified October 2026https://webserver.rilegislature.gov/Statutes/TITLE45/45-24/45-24-37.htm
- webserver.rilegislature.govOfficial sourceVerified October 2026https://webserver.rilegislature.gov/PublicLaws/law24/law24284.htm
- housing.ri.govOfficial sourceVerified October 2026https://housing.ri.gov/media/3571/download
- rihousing.comOfficial sourceVerified October 2026https://www.rihousing.com/homebuyers/renovation-loans/accessory-dwelling-units/
Cities
Bristol2 sources · verified October 2026Coventry2 sources · verified October 2026Cranston2 sources · verified October 2026Cumberland2 sources · verified October 2026East Providence4 sources · verified October 2026Johnston2 sources · verified October 2026Lincoln2 sources · verified October 2026Narragansett3 sources · verified October 2026New Shoreham2 sources · verified October 2026Newport5 sources · verified October 2026North Kingstown3 sources · verified October 2026North Providence2 sources · verified October 2026Pawtucket2 sources · verified October 2026Providence3 sources · verified October 2026Smithfield2 sources · verified October 2026South Kingstown4 sources · verified October 2026Warwick4 sources · verified October 2026West Warwick2 sources · verified October 2026Westerly4 sources · verified October 2026Woonsocket3 sources · verified October 2026
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