Boston's Inspectional Services Department at 1010 Massachusetts Avenue issues the building permits for the Commonwealth's largest city, enforcing the Massachusetts State Building Code exactly as every other municipality does — and then a zoning code that is Boston's alone. Under its enabling act the city is not governed by the state Zoning Act that applies in the other 350 cities and towns; it has its own Zoning Code, its own Zoning Commission, and a Zoning Board of Appeal that hears both zoning appeals and requests for relief from the State Building Code.
The other Boston-specific gate is Article 80. Development review by the planning agency runs on thresholds — small project review and, above them, large project review with impact reports and community process — and the department cannot issue a building permit until the agency has issued a certificate of consistency confirming that the construction plans match what Article 80 approved. Work in a local historic district needs Landmarks Commission approval before that, and an applicant aggrieved by a permit denial has 45 days to appeal to the Board of Appeal.
This guide covers the City of Boston. Cambridge, Somerville, Quincy, Chelsea, Brookline and every other municipality in the metropolitan area run their own building departments under the same state code; a Boston permit stops at the city line.
No certificate of consistency, no building permit. For a project that has been through Article 80, the department cannot issue the building permit until the planning agency has issued a certificate of consistency confirming the construction plans are consistent with the Article 80 approval. Filing for the building permit while the Article 80 file is still open does not shorten the process — it only starts a review that cannot conclude.
What requires a building permit in Boston?
What is local in Boston is the building department, the fee schedule, zoning, and the Article 80 development review and the city's own Zoning Code.
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- Any construction, reconstruction, alteration, repair, removal or demolition, and any change of use or occupancy
- Demolition, which needs its own permit from the department before any demolition work begins
- Projects above the Article 80 thresholds, which need small or large project review and a certificate of consistency before the permit
- New buildings, additions and any structural work on an existing building
- Alterations, repairs and reconstruction under the existing building provisions, and any change of use or occupancy
- Decks (except small, low, freestanding ones), sheds over 200 square feet at a one- or two-family home or 120 square feet elsewhere, swimming pools 24 inches deep or more, and solar installations
Often exempt
- Ordinary repairs that do not alter structure, egress or systems — but not in a local historic district, where the Landmarks Commission's approval reaches further
- Ordinary repairs that do not alter structure, egress or systems
- Painting, wallpapering, flooring, cabinets and similar finish work
- Small items on the code’s exempt list, such as fences up to 7 feet and retaining walls up to 4 feet
- Work on a building owned by the Commonwealth, which the State Building Inspector enforces rather than the town
What is actually local, and what is not
The code is the Commonwealth's and cannot be amended locally. Boston's layer is the building department itself, its fee schedule and filing route, the zoning bylaw or ordinance and the zoning enforcement that precedes the permit, the conservation commission's wetlands jurisdiction under the Wetlands Protection Act, and Boston's own Zoning Code, the Article 80 development review that precedes the permit, and the Landmarks Commission's jurisdiction over the local historic districts.
Massachusetts has one State Building Code, 780 CMR, for every city and town; towns cannot rewrite it, though many opt into a stricter energy code. The trades run under their own state codes. Massachusetts rules
Who handles permitting in Boston?
The Inspectional Services Department is the enforcing office, with the Commissioner of Inspectional Services as the city's primary authority for administering and enforcing the Zoning Code as well as the building code, and licensed inspectors covering the construction milestones. The planning agency runs Article 80 review and issues the certificate of consistency, the Zoning Board of Appeal hears zoning relief and State Building Code appeals with the planning agency's advisory recommendations, and the Landmarks Commission reviews the local historic districts.
| Detail | Information |
|---|---|
| Department | City of Boston Inspectional Services Department |
| Office | 1010 Massachusetts Avenue, 5th Floor, Boston, MA 02118 |
| Phone | (617) 635-5300 |
| Hours | Monday to Friday, 8:00 am to 4:00 pm |
| Zoning | Boston Zoning Code, with Article 80 development review by the planning agency |
| Appeals | Zoning Board of Appeal, within 45 days of a permit denial |
Not sure this scope needs a permit?
Get a free quote →In 2025, building permits issued in Boston authorized 2,107 new privately owned housing units, 228 of them single-family homes, according to the U.S. Census Bureau Building Permits Survey.
Permit types
Residential permits
A Boston house or condominium project files with the department against the state building code and the city's own Zoning Code, with the supervising individual's Construction Supervisor Licence and, on residential work for an owner-occupant, the contractor's Home Improvement Contractor registration. Boston adopted the Municipal Opt-in Specialized energy code effective January 1, 2024, so new construction meets the specialized pathway rather than the stretch code; additions, alterations and renovations follow the stretch code. In a local historic district the Landmarks Commission comes first.
Commercial permits
Commercial and multi-family development in Boston is shaped by Article 80 more than by the building code. Small project review and large project review carry impact reports, community meetings and comment periods, planned development areas need approval by both the planning board and the Zoning Commission, and the certificate of consistency is the document that releases the building permit. Projects may also face state environmental review, which the agency coordinates with its own.
Zoning, conservation and the 30-day clock
The approvals that run ahead of the building permit are the local ones: zoning sign-off under Boston's bylaw or ordinance, and, where the work is within 100 feet of a wetland or within the riverfront or floodplain areas, an order of conditions from the conservation commission under the Wetlands Protection Act, which is a hearing rather than a counter transaction. In Boston the planning agency's Article 80 review governs the larger projects, the Landmarks Commission governs the local historic districts, the harbour and waterfront bring state tidelands licensing into the file, and the conservation commission holds the wetlands jurisdiction. Appeals from the building official go to the local zoning board of appeals on zoning matters and to the State Building Code Appeals Board on code matters.
Rather talk it over?
Call 1-855-478-4290 →Massachusetts has no general contractor licence: the supervising individual holds a Construction Supervisor Licence, and contractors working on existing owner-occupied homes register as Home Improvement Contractors. Massachusetts rules
Boston permit costs and fees
Fees follow the city's schedule, paid through the department's permitting system, with Article 80 and zoning relief costs running separately from the building permit.
| Item | Fee or rule |
|---|---|
| Building permit | City schedule, by project type and valuation, paid through the department's system |
| Demolition permit | Required from the department before any demolition work begins |
| Article 80 review | Planning agency process, with impact reports and community process on larger projects |
| Zoning relief | Zoning Board of Appeal application, with the planning agency's advisory recommendation |
| Landmarks review | Commission approval before a permit in a local historic district |
| Trade permits | Electrical, plumbing and gas permits filed separately under the state codes |
Boston zoning is not the state Zoning Act. Every other Massachusetts municipality zones under the state Zoning Act; Boston operates under its own Zoning Code and Zoning Commission, with use tables, dimensional tables, overlay districts and definitions that are the city's own. Advice built on the state act — or on a neighbouring town's bylaw — does not transfer across the city line.
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Permit required
- Projects above the Article 80 thresholds — planning agency review and a certificate of consistency before the permit
- Electrical — state-licensed electrician; separate wiring permit under 527 CMR 12
- Plumbing and gas — state-licensed plumber or gas fitter; separate permits under 248 CMR
- Sheet metal work — state sheet metal licence where the work falls under it
- Fire protection and alarms — fire department plan review through the building permit, plus any fire department permit under 527 CMR; alarms by a state-licensed systems contractor
Typically exempt
- Fixing a leaking faucet or valve, clearing a blocked drain, or adjusting gas appliance controls, which need no plumbing or gas permit
Trade work is permitted separately and inspected by the municipality’s own wiring and plumbing inspectors under the state codes. Massachusetts rules
How to apply for a Boston building permit
Zoning sign-off under the local bylaw or ordinance, and any variance or special permit the project needs, must come before the building permit.
Work in or near wetlands, rivers or land that floods needs conservation commission approval under the Wetlands Protection Act, usually an order of conditions, before work starts.
The Construction Supervisor Licence of the supervising individual, and the Home Improvement Contractor registration where the work is on an existing owner-occupied home of one to four units.
The building official reviews the documents against 780 CMR and the energy code the town has adopted.
Fees are the town's own and are due before issuance; trade permits are filed separately.
Footing to final, with the wiring and plumbing inspectors on their own trades, then a certificate of occupancy for a new building or change of use, or a certificate of completion for other work.
Review, corrections and what actually causes delay
Boston reviews the building permit against the state code and its own Zoning Code, with the Article 80 and Landmarks tracks running ahead of it. What delays a file here is a building permit filed before the certificate of consistency, historic district work filed before Landmarks, and zoning relief sought after the design was fixed rather than before.
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Inspections follow the code's sequence — footing and foundation, frame, insulation and final — with the wiring and plumbing inspectors covering their own trades, and are requested from the building department by permit number. Work that passes final receives a certificate of occupancy for new buildings and changes of use, or a certificate of inspection where the code requires one. Buildings in the use groups listed in 780 CMR Section 110 also carry periodic inspections, with proof of maintenance filed with the building official. Boston's licensed inspectors carry the mandatory inspections at the construction milestones — foundation, framing, insulation and final — with the certificate of occupancy at the end; the department also enforces the city's housing and sanitary codes through the same office.
Boston permit search and official resources
- Boston Inspectional Services Department — the enforcing office, permits and inspections
- Boston planning agency — Article 80 — development review, thresholds and the certificate of consistency
- Massachusetts State Building Code, 780 CMR — the 10th edition the department enforces
- Massachusetts State Building Code, 780 CMR — the 10th edition and its Massachusetts amendments from the Board of Building Regulations and Standards
- Home Improvement Contractor registration — the consumer-protection registration and Guaranty Fund
- Construction Supervisor Licence — the examined licence held by the individual supervising the work
Inspections are where schedules slip.
Get a free quote →Frequently asked questions
Does the state Zoning Act apply in Boston?
No. Boston operates under its own Zoning Code and Zoning Commission rather than the state Zoning Act that governs the other cities and towns.
What is Article 80?
The city's development review process, with small project review and large project review above published thresholds, carrying impact reports and community process; the planning agency then issues a certificate of consistency.
Can I file the building permit during Article 80?
The department cannot issue the permit until the certificate of consistency has been issued confirming the plans are consistent with the Article 80 approval.
Which energy code applies?
Boston adopted the Municipal Opt-in Specialized energy code, effective January 1, 2024, so new construction follows the specialized pathway. Additions, alterations and renovations follow the stretch code.
How do I appeal a permit denial?
To the Zoning Board of Appeal within 45 days of the denial; the board also hears requests for relief from the State Building Code and appeals of the building commissioner's decisions.
Which building code edition applies?
The 10th edition of the Massachusetts State Building Code, 780 CMR, in effect since October 11, 2024 and the only code in force since July 1, 2025, built on the 2021 International Codes with Massachusetts amendments.
Simplify Boston permitting with Alliance Permitting
Boston runs two codes and two review tracks, and the order between them is the whole schedule. We settle Article 80 and Landmarks before the permit application, file against the city's own zoning rather than the state act, and take the certificate of consistency to the department the day it issues.
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Send us the scope and the parcel. We confirm the review path with the Boston Inspectional Services Department, assemble the submittal, file it, and track it through issuance — corrections included.
More Massachusetts permitting guides
More Massachusetts permitting guides
This guide is provided by Alliance Permitting for general information about Boston permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.