Bolthole Index

Washington County, Rhode Island

Town of Charlestown, RI: building permits, zoning and septic rules

The Town of Charlestown, Rhode Island requires building permits and administers its own zoning ordinance.12 Charlestown handles the local building application; Rhode Island DEM handles septic approval, which must be in place before a building permit for work requiring OWTS approval can be issued.34

At a glance

Building permits
Required; ask Charlestown Building/Zoning about the scope and exemptions for your project.15
Zoning
Town zoning applies; district use and dimensional tables govern parcel review.26
Septic permits
Rhode Island DEM approval required for new construction using an OWTS.4
Vacant parcels
Zoning certificate must accompany the new-dwelling application.3
RV living
Private-parcel occupancy could not be confirmed; ask Charlestown Building/Zoning.5
Wells
Local permit requirements vary; Charlestown requires a well water test for new-home occupancy.73

Who to call

Building permits

Charlestown Building/Zoning Department and Floodplain Management

Town building and zoning questions, inspection contacts and flood-zone assistance

(401) 364-1215

4540 South County Trail, Charlestown RI 02813

Building permits

Charlestown Building Officials Office — New Dwelling Requirements

New-dwelling application documents, zoning prerequisites, road access approvals and occupancy inspections

Online permits →

Septic permits

Rhode Island DEM, Office of Water Resources, OWTS Program

Onsite wastewater treatment system (septic) permits, site evaluations and inspections statewide, including all of Washington County

(401) 222-3961

dem.owts@dem.ri.gov

235 Promenade Street, Providence, RI 02908-5767

Contact details are copied from each office’s official page and were checked against it on October 15, 2026.

Off-grid gear

Going off-grid in Town of Charlestown means bringing your own water and power. The kit we’d start with:

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Do you need a building permit in the Town of Charlestown, RI?

Charlestown requires building permits under its town zoning ordinance; ask Building/Zoning to identify the application and any exemption for the specific work proposed.15 For a new dwelling, the town accepts complete applications through its online portal and lists contractor registration or an owner affidavit among the application documents.3 A Charlestown building permit does not cover electrical, plumbing or mechanical work: those require separate permits.3

Who handles building permits and flood-zone questions in Charlestown?

Charlestown’s Building/Zoning Department is the local contact for building forms and e-permitting, and the department also provides assistance determining a property’s flood zone.5 Call (401) 364-1215 to discuss the proposed site and construction before preparing the application.5 For new dwellings, Charlestown requires an engineer or architect to stamp plans when the structure is in a Special Flood Hazard Area or has an unusual structural design.3

Does the Town of Charlestown have zoning, lot sizes and setbacks?

Charlestown administers its own zoning ordinance, with published zoning districts and land-use tables.26 We could not confirm the district-specific minimum lot sizes or setbacks; ask Charlestown Building/Zoning to identify the parcel’s district and applicable dimensional requirements.5 The town’s new-dwelling packet requires a scaled site plan showing distances from the foundation, overhangs, decks and septic system to property lines, together with existing and proposed contours.3 A zoning certificate must accompany a new-dwelling application on a vacant parcel.3

How do septic permits work inside the Town of Charlestown?

Rhode Island DEM administers septic approval for new homes in Charlestown, with licensed designers and installers required for OWTS work.8 New sites require a soil evaluation by a licensed soil evaluator, and DEM must accept or concur with the evaluation before the new-construction application is submitted.84 Required written DEM approvals must remain valid when the municipality issues the building permit.4 A composting toilet does not eliminate wastewater approval: qualifying alternative toilets are allowed only as part of an approved OWTS with a separate graywater system.9

Can you live in an RV or tiny home in Charlestown?

We could not confirm Charlestown’s rules for living in an RV on a private parcel or for occupying a tiny home; ask the town’s Building/Zoning Department about the proposed dwelling and parcel before buying.5 Rhode Island’s RV park and campground rules recognize extended and full-time stays within qualifying parks, but those rules do not authorize residential RV occupancy on every private lot.10 Charlestown’s zoning ordinance still applies to land inside the town.2

Building a home in Charlestown: what comes first?

Start with Charlestown Building/Zoning for parcel and flood-zone questions; obtain the zoning certificate required for a vacant-parcel new dwelling and any necessary variance or special-use approval before plan review.53 Arrange DEM septic approval and prepare the scaled site plan for the building application.43 Obtain the town-road curb-cut approval through the town portal, or RIDOT approval for a state road.3 Before occupancy, Charlestown requires completion, the town’s final inspection, fire inspection, DEM certificate of conformance and a well water test.3

Watch-outs

  • We could not confirm Charlestown’s private-well construction permit requirement; ask Building/Zoning before drilling, because Rhode Island allows local permit requirements.75
  • Charlestown’s required zoning approvals and DEM septic approval are separate prerequisites for a new-dwelling application.3
  • For the broader geographic area, see the Washington County guide; Rhode Island assigns building-code administration to municipal and state authorities rather than counties.11

Sources

  1. Chapter 218: Zoning - Town of Charlestown, RI (eCode360) (Town of Charlestown), quoted and re-checked
  2. Chapter 218: Zoning - Town of Charlestown, RI (eCode360) (Town of Charlestown), quoted and re-checked
  3. Charlestown Building Officials Office — New Dwelling Requirements (charlestownri.gov)
  4. Rules Establishing Minimum Standards Relating to Location, Design, Construction and Maintenance of Onsite Wastewater Treatment Systems (Rhode Island statewide rule), quoted and re-checked
  5. Charlestown Building/Zoning Department and Floodplain Management (charlestownri.gov)
  6. Chapter 218: Zoning - Town of Charlestown, RI (eCode360) (Town of Charlestown), quoted and re-checked
  7. Private Well Care, Repairs, and Construction (Rhode Island statewide rule), quoted and re-checked
  8. Obtaining a Permit for a New Home’s Septic System (Rhode Island statewide rule), quoted and re-checked
  9. Rules Establishing Minimum Standards Relating to Location, Design, Construction and Maintenance of Onsite Wastewater Treatment Systems (Rhode Island statewide rule), quoted and re-checked
  10. R.I. Gen. Laws § 32-7-7 — Definitions (Rhode Island statewide rule), quoted and re-checked
  11. R.I. Gen. Laws § 23-27.3-100.1 — Short title — Applicability (Rhode Island statewide rule), quoted and re-checked

Written October 15, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

Answers from the rulebook for Town of Charlestown

Town of Charlestown’s own rules

  • Building permitRequired

    Construction inside Charlestown town

    • Section text and exemptions not read; only the section heading was seen
    “article ii administration and enforcement § 218-6 building official/zoning enforcement officer to enforce. § 218-7 records. § 218-8 building permits required.”
  • Local zoningPresent

    Land inside Charlestown town; the town adopts and administers its own Chapter 218 Zoning ordinance

    • Ordinance amended by Ord. 435 (May 11, 2026) and Ord. 437 (Aug 11, 2026)
    “article ii administration and enforcement § 218-6 building official/zoning enforcement officer to enforce. § 218-7 records. § 218-8 building permits required.”
  • Zoning districtsPublished

    Zoning districts in Charlestown town

    • District list, land use table and dimensional table are attachments to Chapter 218; contents not read
    “article vi land use regulations § 218-33 zoning districts. note § 218-34 interpretation. § 218-35 district use allowances. § 218-36 land use table.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Town of Charlestown or Washington County directly.

  • Owner-builder exemption — Owner-builder in Charlestown town
  • Building code adopted — Building code inside Charlestown town
  • Inspections — Building inspections in Charlestown town
  • Certificate of occupancy — Certificate of occupancy in Charlestown town
  • Minimum dwelling size — Minimum dwelling size in Charlestown town
21 more unanswered
  • Minimum lot size
  • Setbacks
  • Lot coverage
  • Building height
  • Living in an RV
  • Camping on your land
  • Tiny homes
  • Manufactured homes
  • Accessory dwellings
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Driveway access
  • Building in a floodplain
  • Short-term rentals
  • Permit fees
  • Permit process

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Unanswered questions are usually a sign that Town of Charlestown publishes no rule on the point, not that none exists. Washington County’s page lists the county offices to call.

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