The Town of Johnston's Building Division, part of the Department of Development and Public Service at 100 Irons Avenue, permits and inspects construction for a Providence County town of around 30,000 immediately west of the capital. The town divides sharply: its eastern edge along the Providence line is densely built and largely served by public utilities, while the western half opens into farmland, reservoir land and large lots where septic and wells govern what can be built.
The address is the first practical thing to settle. Johnston Town Hall is at 1385 Hartford Avenue and the Building Division is at 100 Irons Avenue — separate buildings, and a search for a Johnston building permit routinely returns Town Hall. Town Hall itself keeps a shorter Friday, closing at half past three, which is worth knowing for anything that does need the municipal building rather than the permits office.
This guide covers the Town of Johnston in Providence County. Providence, Cranston, Scituate, Smithfield and North Providence are separate municipalities with their own building officials, and Rhode Island's counties have no government of any kind.
The permits office is on Irons Avenue, not at Town Hall. Johnston's Building Division, within the Department of Development and Public Service, is at 100 Irons Avenue; Town Hall is at 1385 Hartford Avenue. Directories and mapping services return Town Hall for permit searches. Confirm which building you need before travelling, and note that Town Hall closes earlier on Fridays than during the rest of the week.
What requires a building permit in Johnston?
Rhode Island has one state building code for every city and town. The Building Code Standards Committee adopts the state building code as a set of numbered regulations — SBC-1 for buildings generally, SBC-2 for one- and two-family dwellings, and others covering plumbing, mechanical, electrical, energy, property maintenance, rehabilitation and the rest — and every one of the state's 39 cities and towns enforces it through a building official. There is no opting out, no population threshold and no unincorporated land; the code that applies in Johnston is the code that applies everywhere. The current editions rest on the 2021 international codes with Rhode Island amendments, in force since the first of December 2025, with the 2024 energy code adopted in full and the 2023 electrical code alongside. So the questions here are which SBC regulation governs the work, and the permits office away from Town Hall and the town's split between serviced and unserviced land.
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- Construction, alteration, movement, enlargement, replacement, repair, removal and demolition of any building
- State septic approval on an unsewered parcel in the western half, before the building application is complete
- Any change of occupancy from one use group to another
- Construction, alteration, movement, enlargement, replacement, repair, removal and demolition of any building or structure
- Any change of use or occupancy, under the regulation that governs the building type
- Work on a three-family dwelling, which must use the general building code rather than the existing building code
Often exempt
- Ordinary repairs that do not alter structure, egress, fire protection or building systems
- Painting, papering, flooring, cabinets and similar finish work
- Ordinary repairs that do not alter structure, egress, fire protection or building systems
- Painting, papering, flooring, cabinets and similar finish work
- Work by a utility in the public right of way or within public utility easements, under the electrical regulation's own exemption
What the municipality does, and what the state keeps
Locally, what stands out is the permits office away from Town Hall, and the split between a dense serviced eastern edge and a western half on septic and wells.
Rhode Island has one state building code, kept by the State Building Code Office and enforced by each city or town’s building official; there is no county layer, and appeals go first to the town’s board of appeals, then to the state Building Code Board of Standards and Appeals. Rhode Island rules
Who handles permitting in Johnston?
The Building Division of the Department of Development and Public Service is the permitting authority inside the town, enforcing the Rhode Island State Building Code. The town's planning and zoning boards handle land use, the state environmental department approves septic systems and holds wetlands jurisdiction, the Contractors' Registration and Licensing Board registers the contractor, and appeals go first to the local board of appeals, then to the state Building Code Board of Standards and Appeals.
Not sure this scope needs a permit?
Get a free quote →| Detail | Information |
|---|---|
| Department | Johnston Department of Development and Public Service — Building Division |
| Office | 100 Irons Avenue, Johnston, RI 02919 |
| Phone | (401) 231-4000 |
| Not this address | Johnston Town Hall, 1385 Hartford Avenue, (401) 351-6618 |
| Appeals | The local board of appeals, then the state Building Code Board of Standards and Appeals |
| Contractor | Must be registered with the state board before a permit may issue |
Permit types
Residential permits
A Johnston house project's first question is which half of the town it sits in. On the eastern side the file resembles any dense Providence County municipality's, with tight lots, older housing and unit-count questions. In the west the state's septic approval and a well come before the building application is complete, run on the state's timetable, and frequently decide where on a large parcel a house may sit.
Commercial permits
Commercial work in Johnston — the Atwood Avenue and Hartford Avenue corridors, the industrial and distribution parcels, the landfill and resource recovery operations and the newer office development — runs under the existing building code where the building is not residential. The town has attracted large-footprint development on its open land, and those projects raise access, drainage and wetlands questions well before they raise code questions.
The coast, the flood zone and the appeal that leaves town
In Johnston the Pocasset River and the reservoir land shape the west, the wetlands across the open half bring the state environmental department's jurisdiction to many rural parcels, and the dense eastern edge along the Providence line carries the older housing and the tighter setbacks.
Rather talk it over?
Call 1-855-478-4290 →Contractors on residential and commercial work must be registered with the Contractors’ Registration and Licensing Board, and a building permit may not be issued to an unregistered contractor. Rhode Island rules
Johnston permit costs and fees
Johnston charges building and trade permit fees under the town's schedule, with the state's septic and wetlands approvals charged by the body that issues them and board fees where the project reaches planning or zoning.
| Item | Fee or rule |
|---|---|
| Building permit | On the declared construction value, per the town's schedule |
| Trade permits | Separate electrical, plumbing and mechanical fees under their own regulations |
| Septic approval | Through the state environmental department on an unsewered parcel |
| Wetlands | State environmental approval where the parcel requires it |
| Zoning and planning | Board application fees where the project reaches them |
| Contractor registration | Held with the state board; a permit may not issue without it |
Which half of the town decides the programme. On Johnston's eastern edge a project runs on the town's timetable. In the western half the state's septic approval and any wetlands review run on the state's timetable instead, and they precede a complete building application rather than accompanying it. The same scope on two parcels a few miles apart can have entirely different lead times.
Rather not deal with the building department?
Get a free quote →Trade permits and who may pull them
Permit required
- Electrical — under the state electrical regulation, by a licensed electrician
- Plumbing — under the state plumbing regulation, by a licensed plumber
- Mechanical and fuel gas — under their own regulations, by licensed tradespeople
- Roofing on commercial work — by a contractor holding the state's commercial roofing licence
Typically exempt
- Electric utility company installations in public rights of way or utility easements, which fall outside the state electrical code
- Minor work the state code lists as exempt, such as painting and finish work, small sheds, low fences and replacement window sashes (not full window units)
Trade work is permitted separately under its own state regulation and done by tradespeople holding the state licence for that trade. Rhode Island rules
How to apply for a Johnston building permit
A house falls under the one- and two-family code, an office under the existing building code, and a three-family under the general building code.
A permit may not be issued to an unregistered contractor, and a registered contractor may not hire an unregistered subcontractor unless the subcontractor is exempt, such as a licensed electrician or plumber.
The coastal council's assent is a separate state approval. Flood elevation rules are part of the building code and are checked in the building permit.
Zoning is the municipality's own ordinance and is the main thing that differs between one Rhode Island town and the next.
Reviewed against the state code. The town's fee comes from a state-set fee schedule, and the application is filed electronically.
Footing to final with the trades under their own regulations, then the certificate of occupancy.
Review, corrections and what actually causes delay
The Building Division reviews against the regulation governing the building type, with the town's zoning alongside and the state's approvals ahead of it on unserviced parcels. What delays a Johnston project is a trip to Town Hall instead of Irons Avenue, a western parcel where the septic evaluation was left late, and an unregistered contractor on the file.
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Get a free quote →Inspections in Johnston
Inspections follow the sequence of the regulation governing the work — footing, foundation, framing, rough trades, insulation and final — requested from the local building official by permit number, with the trades inspected under their own regulations. Work that passes final receives a certificate of occupancy from the building official. Where the applicant disputes a decision along the way, the appeal is to the state board rather than to the municipality. Johnston inspections are requested from the Building Division against the permit number, with the trades inspected under their own regulations and the certificate of occupancy at the close.
Johnston permit search and official resources
- Johnston Development and Public Service (Building Division) — the department, its permits and contacts
- Municipal Building Department Directory — the state's own directory of every Rhode Island building department
- Contractors' Registration and Licensing Board — who must register and how to check a registration
- Rhode Island Building Code Commission — the adopted regulations, the amendments and the effective dates
- Contractors' Registration and Licensing Board — who must register, how to register and how to check a registration
- SBC-1, the Rhode Island State Building Code — the general building code regulation and its Rhode Island amendments
Inspections are where schedules slip.
Get a free quote →Frequently asked questions
Where is the Johnston permits office?
At 100 Irons Avenue, not at Town Hall on Hartford Avenue. Directories frequently return Town Hall for permit searches.
Who issues building permits in Johnston?
The town’s Building Division, part of the Department of Development and Public Service at 100 Irons Avenue (401-231-4000). Applications are made through the town’s online permit portal. Rhode Island’s counties have no government and issue nothing.
What comes first on a western parcel?
The state's septic approval and a well where there is no public water. Both precede a complete building application and run on the state's timetable.
Which code edition applies?
The 2021 international codes with Rhode Island amendments, in force since the first of December 2025, with the 2024 energy code adopted in full.
Does my contractor need to be registered?
Yes. A permit may not be issued to an unregistered contractor, and a registered contractor may not hire an unregistered subcontractor.
Where do I appeal a decision?
First to the town’s board of appeals, within 30 days; its decision can then go to the state Building Code Board of Standards and Appeals.
Simplify Johnston permitting with Alliance Permitting
Johnston's counter is not where the map says, and its two halves run on different clocks. We file at Irons Avenue and start the state approvals first on anything west of the utilities.
Ready to break ground in Johnston sooner?
Send us the scope and the parcel. We confirm the review path with the Johnston Building Division, assemble the submittal, file it, and track it through issuance — corrections included.
More Rhode Island permitting guides
More Rhode Island permitting guides
This guide is provided by Alliance Permitting for general information about Johnston permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.