Somerville's Inspectional Services Department runs its Building Division from 1 Franey Road, providing permitting, plan review and inspections against the Massachusetts State Building Code and the city's own zoning ordinance in one of the most densely populated municipalities in the country. Its filing mechanic is worth knowing before budgeting: when a building permit application is submitted the applicant is directed to a payment page for a review fee, and where the project turns out not to need a plan review, that fee is credited towards the building permit fee rather than lost.
The department's other distinguishing rule is preservation. The city regulates the demolition of significant buildings outside its local historic districts as well as inside them, and the historic preservation process reaches demolitions of buildings over seventy-five years old, alterations to properties in local historic districts, and the memorandum of agreement route — all filed through the city's permitting system, with communication between applicant and planner happening inside it. Somerville adopted the Specialized energy code in the first wave, effective July 2023.
This guide covers the City of Somerville. Cambridge, Medford, Arlington, Everett and Boston each run their own building departments under the same state code; a Somerville permit stops at the city line.
Seventy-five years old is the demolition trigger. Somerville's demolition review reaches buildings over seventy-five years old, not merely those inside a local historic district — the ordinance exists to protect significant buildings that sit outside the designated districts. In a city built largely before the war, that catches a very large share of the housing stock, and the review runs before the demolition permit.
What requires a building permit in Somerville?
Massachusetts runs one statewide code and enforces it town by town. The Massachusetts State Building Code, 780 CMR, is written by the Board of Building Regulations and Standards and applies in every city and town without local amendment — there is no county layer at all, and Somerville enforces the same code as every other municipality in the Commonwealth. The 10th edition took effect on October 11, 2024, ran concurrently with the 9th until June 30, 2025, and has been the only code in force since July 1, 2025. It is built on the 2021 International Codes — building, residential, existing building, mechanical, energy, swimming pool and fire — with Massachusetts amendments substantial enough that the model text alone will mislead. The residential provisions sit in Chapter 51, which adopts the 2021 IRC as amended. What is local in Somerville is the building department, the fee schedule, zoning, and the city's demolition review and the Specialized energy code.
The code draws the exemption line, and it is the same line everywhere in the Commonwealth. Ordinary repairs need no permit; anything that constructs, reconstructs, alters, repairs, removes or demolishes a building, or changes its use or occupancy, needs one from the building official. Electrical work runs under the Massachusetts Electrical Code, 527 CMR 12, and plumbing and gas under the Fuel Gas and Plumbing Code, 248 CMR, each permitted and inspected by Somerville's own wiring and plumbing inspectors rather than the building inspector.
Typically permit required
- All interior and exterior work, with the department listing only painting, tiling and flooring as outside the requirement
- Demolition of a building over seventy-five years old, which goes to historic preservation review before the permit
- Demolition generally, which needs an extermination certificate and signed utility disconnection documentation from every service
- 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, sheds above the code threshold, swimming pools and solar installations
Often exempt
- Painting, tiling and flooring — the department's own short list of work needing no building permit
- Ordinary repairs that do not alter structure, egress or systems
- Painting, wallpapering, flooring, cabinets and similar finish work
- Like-for-like replacement that the code places below the permit threshold
- 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. Somerville'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 the demolition review that reaches buildings over seventy-five years old and the Specialized energy code the city adopted in the first wave.
Who handles permitting in Somerville?
The Inspectional Services Department is the enforcing office, its director acting as building official; the Building Division carries permitting, plan review and field inspections on building permits, certificates of occupancy, certificates of inspection and fire escapes, represents the city in court on zoning and code violations, and coordinates with the fire and health departments and public works. The historic preservation commission reviews demolitions and local district alterations, and the zoning team within the department interprets the ordinance and the zoning atlas.
| Detail | Information |
|---|---|
| Department | City of Somerville Inspectional Services Department — Building Division |
| Office | 1 Franey Road, Somerville, MA 02145 |
| Phone | (617) 625-6600, extension 5600 |
| Hours | Monday to Wednesday 8:00 am to 4:00 pm; Thursday to 7:00 pm; Friday to noon |
| Public counter | Morning and afternoon windows Monday to Thursday; mornings only on Friday, closing fifteen minutes early |
| Filing | The city's online permitting system, which also carries zoning relief and preservation applications |
Permit types
Residential permits
A Somerville homeowner who lives in a one- or two-family dwelling may obtain the building permit for that property themselves; on a three-family or larger, and on any commercial building, a licensed contractor must apply for and hold the permit. The department asks applicants unsure whether a permit is needed to call and book a preliminary meeting with a building inspector rather than guess — and in a city where almost everything except painting, tiling and flooring needs one, the answer is usually yes.
How Massachusetts contractor credentials work
Massachusetts issues no general contractor licence. It issues two separate and non-interchangeable credentials, and permit-required work usually needs both. The Construction Supervisor Licence, under M.G.L. c. 143 and 780 CMR, is an examined licence from the Office of Public Safety and Inspections held by the individual supervising the work — unrestricted for any building, restricted for one- and two-family dwellings up to 35,000 cubic feet, or one of the specialty classes. Home Improvement Contractor registration, under M.G.L. c. 142A, is a consumer-protection registration with the Office of Consumer Affairs and Business Regulation, required of anyone contracting residential work on an existing owner-occupied building of one to four units, with a written contract required above one thousand dollars and access to the state Guaranty Fund behind it. A homeowner may take out the permit on their own one- or two-family home under the supervisor licence exemption by signing the affidavit and warning notice — but doing so waives the Guaranty Fund protection a registered contractor's permit would carry. Electricians, plumbers and gas fitters hold their own state licences, and Somerville verifies all of them at the counter.
Commercial permits
Commercial work in Somerville clears zoning — interpreted by the department's own zoning team against the ordinance and the zoning atlas — then plan review and the building permit, with the Specialized energy code's commercial pathway applying to new construction and major renovation. Demolition carries the extermination programme, which must begin at least seven days before demolition starts and continue to substantial completion, and signed documentation from every utility that service has been removed or never existed.
Zoning, conservation and the thirty-day clock
A Massachusetts building permit application is filed with the building official, who reviews the construction documents and issues or refuses it — and under 780 CMR the official must act within thirty days of a complete application, with a written statement of the reasons for any refusal. The approvals that run ahead of it are the local ones: zoning sign-off under Somerville's bylaw or ordinance, and, where the work is within a hundred 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 Somerville the historic preservation commission reviews demolitions of older buildings across the city rather than only in the districts, the Mystic River corridor brings conservation and floodplain review into the file, and the Specialized energy code governs new construction and major renovation. 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.
Somerville permit costs and fees
Fees follow the city's schedule, with the review fee taken at application and credited to the permit fee where no plan review proves necessary.
| Item | Fee or rule |
|---|---|
| Review fee | Paid at application; credited towards the building permit fee if no plan review is required |
| Building permit | City schedule by project type and construction value |
| Demolition | Permit plus extermination certificate and signed utility disconnection documentation |
| Historic preservation | Legal advertisement fees assessed and paid through the city's permitting system |
| Trade permits | Electrical, plumbing and gas permits filed separately under the state codes |
| Energy compliance | Specialized code documentation filed with the application |
The extermination programme starts before the demolition. A Somerville demolition needs an extermination certificate from a licensed Massachusetts company, with the programme beginning at least seven days before demolition starts and continuing until substantial completion, plus signed documentation from each utility that service has been removed — and where a service such as phone was never installed, signed confirmation of that is still required.
Trade permits and who may pull them
The trades are permitted separately from the building permit and inspected by the town's own wiring and plumbing inspectors, under the state codes and licences rather than any local one.
Permit required
- Demolition of a building over seventy-five years old — historic preservation review 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 review under 527 CMR alongside the building permit
Typically exempt
- Like-for-like fixture and device replacement where the state codes allow it without a permit
- Work the licensing boards place outside their permit requirements
How to apply for a Somerville building permit
Zoning sign-off under the local bylaw or ordinance, and any special permit or variance from the zoning board, precede the building permit.
Work near wetlands, rivers or floodplain needs an order of conditions under the Wetlands Protection Act before the permit.
The Construction Supervisor Licence of the supervising individual, and the Home Improvement Contractor registration where the work is residential.
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 the certificate of occupancy.
Review, corrections and what actually causes delay
Somerville's building official acts on a complete application within thirty days under the state code, with the review fee taken up front and communication running inside the permitting system. What delays a file here is a demolition filed without the age question answered, utility documentation missing for a service that was never installed, and an energy submission built for the base or stretch code.
Inspections in Somerville
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. Somerville's Building Division carries field inspections on building permits, certificates of occupancy, certificates of inspection and fire escapes, and responds to complaints from owners, tenants and contractors; the department also coordinates with the fire and health departments where a project touches their jurisdiction.
Somerville permit search and official resources
- Somerville ISD Building Division — the division, the review fee and who may pull a permit
- Somerville permitting system — zoning relief and historic preservation filing
- Massachusetts State Building Code, 780 CMR — the 10th edition the division 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
Frequently asked questions
What work needs no permit in Somerville?
The department lists painting, tiling and flooring; a building permit is required for all other interior and exterior work.
Can I pull my own permit?
If you own and reside in a one- or two-family dwelling, yes. On a three-family or larger, or any commercial building, a licensed contractor must apply for and hold the permit.
What is the review fee?
A fee paid at application when the building permit is submitted; where the project needs no plan review, it is credited towards the building permit fee.
Which demolitions need preservation review?
Demolitions of buildings over seventy-five years old, along with alterations to properties in local historic districts.
What does a demolition permit need?
An extermination certificate with the programme beginning at least seven days before demolition and continuing to substantial completion, and signed utility documentation confirming each service has been removed or never existed.
Which energy code applies?
The Municipal Opt-in Specialized energy code, adopted in the first wave with effect from July 1, 2023.
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More Massachusetts permitting guides
More Massachusetts permitting guides
This guide is provided by Alliance Permitting for general information about Somerville permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.