Middlesex County, Massachusetts
Somerville, MA Building Department and Permits
- The Somerville Inspectional Services Department (ISD) - Building Division is at 1 Franey Rd, Somerville, MA 02145.
- Somerville Inspectional Services Department (ISD) - Building Division phone: 617-625-6600 x5600. Email: isd@somervillema.gov.
- Somerville Inspectional Services Department (ISD) - Building Division hours: Mon-Thu 9:00-11:00 & 1:00-3:00; Fri 9:00-11:00.
- Building permits in Somerville are filed through Citizenserve, the online permit portal.
- Somerville is in Middlesex County, Massachusetts.
- Last verified 2026-09-16 against the Somerville website.
Inspectional Services Department (ISD) - Building Division
- Phone
- 617-625-6600 x5600
- isd@somervillema.gov
- Hours
- Mon-Thu 9:00-11:00 & 1:00-3:00; Fri 9:00-11:00
- Inspector of Buildings
- Kevin Klein, Interim Director of Inspectional Services
Verified 2026-09-16 against the official Somerville website. Always confirm hours before visiting.
Do I need a permit in Somerville, and who pulls it?
In Massachusetts, most permits are pulled by the licensed contractor doing the work, not the homeowner. For one- and two-family homes the state building code requires a licensed construction supervisor or a registered design professional to oversee construction, and for existing owner-occupied one- to four-family homes the contractor must also be registered with the Home Improvement Contractor program.
The homeowner exception is narrow. The building code lets an owner-occupant of a one- or two-family home apply for a building permit for work on their own home, but it applies to building permits only: electrical work may only be done by a master or journeyman electrician licensed by the state, and plumbing and gas work only by a licensed plumber or gas fitter, each under a permit issued to that licensee. It also has a cost the state warns about directly: a homeowner who pulls the building permit themselves may not be eligible for the Guaranty Fund if the contractor's work goes wrong.
Need a licensed contractor? See HVAC, roofing and other contractors serving Somerville on Mass Home Comfort.
Sources: When is a Construction Supervisor License required?; Massachusetts State Building Code, 780 CMR; HIC Homeowner Resources; Electricians consumer fact sheet; Plumbers and gas fitters consumer fact sheet.
Heating and cooling in SomervilleReplacing a furnace, boiler, water heater or central air conditioner, or installing a heat pump or ductless mini split, is licensed work in Massachusetts. Anything on the gas side, a gas furnace, boiler, water heater or range connection, is gas fitting, and the state issues gas-fitting permits only to a licensed plumber or gas fitter.Read more
The electrical side of a heat pump, mini split or AC condenser needs an electrical permit pulled by a licensed electrician. Your Somerville building department may also require a mechanical permit for the equipment itself; the contractor pulls that too.
Heating and cooling installers are one of the trades mass.gov specifically exempts from Home Improvement Contractor registration, so do not expect an HIC number from an HVAC company. What you should expect is a gas-fitter or plumber licence for gas equipment and an electrician's licence for the wiring, with a permit on file for each.
If you are counting on a Mass Save rebate for a heat pump, the equipment must be installed by a contractor participating in the Mass Save Heat Pump Installer Network. A permit trail is part of how that work is documented, so an unlicensed, unpermitted install can cost you the rebate as well as the inspection.
Sources: Plumbers and gas fitters consumer fact sheet; Electricians consumer fact sheet; HIC Homeowner Resources; Air source heat pump rebates.
Full Massachusetts guideWindows and doors in SomervilleReplacing windows or exterior doors is not on the list of work the Massachusetts building code exempts from a permit, so plan on one. The code's own exemption for "ordinary repairs" does not cover anything that removes or changes a required means of egress, which is exactly what a bedroom window is, and changing the size of an opening is an alteration to the structure.Read more
Whether a strict like-for-like swap in the same opening counts as an ordinary repair is a call the Somerville building department makes, so ask before assuming.
In an existing owner-occupied one- to four-family home, the contractor who replaces your windows or doors must be registered as a Home Improvement Contractor, and the state's guidance is that the registered contractor pulls the building permit. A written contract is required by law for any home improvement job over $1,000, and the contractor may not collect more than one-third of the price up front.
If Somerville has a local historic district, exterior window and door changes there usually need the historic district commission's approval before the building permit issues. That is a town rule, not the state code, so check with the building department.
Sources: Massachusetts State Building Code, 780 CMR; HIC Homeowner Resources; When is a Construction Supervisor License required?.
Full Massachusetts guideRoofing in SomervilleRe-roofing and roof replacement are not among the projects the Massachusetts building code exempts from a permit, so in Somerville treat a roof job as permitted work. Because the work touches the building's structure and weather envelope, it is overseen by a licensed construction supervisor, and on an existing owner-occupied one- to four-family home the roofing contractor must also hold Home Improvement Contractor registration.Read more
The state's guidance is that the registered contractor applies for the permit, not you.
The building code has specific requirements for roof coverings, underlayment and ice protection that the inspector checks against, and they depend on the roof type and the edition of the code in force. Rather than quote them here, ask the Somerville building department what it inspects for on a re-roof; the contractor pulling the permit is expected to know.
Sources: Massachusetts State Building Code, 780 CMR; When is a Construction Supervisor License required?; HIC Homeowner Resources.
Full Massachusetts guideSiding in SomervilleResiding a house is not on the list of work the Massachusetts building code exempts from a permit, so in Somerville plan on a building permit for siding replacement. The code's "ordinary repairs" exemption is meant for patching what is there, not stripping and recladding the envelope, and the Somerville building department decides where that line falls; the contractor pulling the permit is expected to ask.Read more
On an existing owner-occupied one- to four-family home the siding contractor must be registered as a Home Improvement Contractor, and the state's guidance is that the registered contractor applies for the permit rather than the homeowner. A written contract is required by law for any home improvement job over $1,000, with no more than one-third of the price collected up front.
If Somerville has a local historic district, a change of siding material or profile on a building inside it usually needs the historic district commission's approval before the building permit issues. That is a town rule, not the state code, so check with the building department.
Sources: Massachusetts State Building Code, 780 CMR; HIC Homeowner Resources; When is a Construction Supervisor License required?.
Full Massachusetts guideRecent building permits in Somerville
11,475 permits on file across 22 months. Records through October 15, 2026, updated daily.
Last 90 days: 769 building, 490 electrical, 195 plumbing, 146 gas, 79 sheet metal, 25 demolition.
Permits commonly pulled in Somerville over the last twelve months: 2,651 building, 1,955 electrical, 778 plumbing, 611 gas and 283 sheet metal permits.
| Filed | Street | Type |
|---|---|---|
| Oct 15, 2026 | IBBETSON ST | Electrical |
| Oct 15, 2026 | ELM ST | Building |
| Oct 15, 2026 | BEACON ST | Gas |
| Oct 15, 2026 | BELMONT PL | Electrical |
| Oct 15, 2026 | BEACON ST | Plumbing |
| Oct 15, 2026 | CENTRAL ST | Demolition |
| Oct 15, 2026 | TENNYSON ST | Building |
| Oct 15, 2026 | BOSTON AVE | Building |
| Oct 15, 2026 | PEARL ST PL | Building |
| Oct 15, 2026 | BELMONT ST | Electrical |
| Oct 15, 2026 | PARK AVE | Building |
| Oct 15, 2026 | INNER BELT RD | Building |
| Oct 15, 2026 | POWDER HOUSE BLVD | Building |
| Oct 15, 2026 | TRULL ST | Sheet Metal |
| Oct 15, 2026 | WILLOW AVE | Building |
| Oct 15, 2026 | BROADWAY | Demolition |
| Oct 15, 2026 | PEARSON AVE | Electrical |
| Oct 15, 2026 | IBBETSON ST | Building |
| Oct 15, 2026 | HEATH ST | Building |
| Oct 15, 2026 | BOW ST | Plumbing |
| Oct 14, 2026 | BROADWAY | Electrical |
| Oct 14, 2026 | HIGHLAND AVE | Electrical |
| Oct 14, 2026 | WARNER ST | Building |
| Oct 14, 2026 | HIGHLAND AVE | Plumbing |
| Oct 14, 2026 | WOODBINE ST | Plumbing |
| Oct 14, 2026 | FREMONT AVE | Building |
| Oct 14, 2026 | HOLLAND ST | Building |
| Oct 14, 2026 | LOWELL ST | Building |
| Oct 14, 2026 | GRAND VIEW AVE | Building |
| Oct 14, 2026 | LEXINGTON AVE | Building |
| Oct 14, 2026 | RADCLIFFE RD | Building |
| Oct 14, 2026 | ALBION ST | Building |
| Oct 14, 2026 | POWDER HOUSE BLVD | Electrical |
| Oct 14, 2026 | MAIN ST | Building |
| Oct 14, 2026 | MORRISON AVE | Electrical |
| Oct 14, 2026 | BANKS ST | Electrical |
| Oct 14, 2026 | FISKE AVE | Demolition |
| Oct 14, 2026 | WHEATLAND ST | Building |
| Oct 14, 2026 | MARSHALL ST | Electrical |
| Oct 14, 2026 | WOODBINE ST | Gas |
| Oct 14, 2026 | WASHINGTON ST | Electrical |
| Oct 14, 2026 | MORELAND ST | Plumbing |
| Oct 14, 2026 | MORELAND ST | Gas |
| Oct 13, 2026 | RAYMOND AVE | Electrical |
| Oct 13, 2026 | FRANCESCA AVE | Electrical |
| Oct 13, 2026 | HUDSON ST | Building |
| Oct 13, 2026 | TEMPLE ST | Building |
| Oct 13, 2026 | CUTTER AVE | Building |
| Oct 13, 2026 | SOMERVILLE AVE | Building |
| Oct 13, 2026 | WARNER ST | Electrical |
Get quotes from local contractors for a project in Somerville.
Monthly archive
- Oct 2026290
- Sep 2026540
- Aug 2026607
- Jul 2026565
- Jun 2026549
- May 2026472
- Apr 2026541
- Mar 2026625
- Feb 2026432
- Jan 2026442
- Dec 2025503
- Nov 2025480
- Oct 2025615
- Sep 2025536
- Aug 2025534
- Jul 2025654
- Jun 2025521
- May 2025507
- Apr 2025554
- Mar 2025578
- Feb 2025448
- Jan 2025482
Construction permits by month in Somerville
Construction permits filed in Somerville each month, counted the way our Massachusetts building permit reports count them across 45 municipalities: by filing date (by issue date in Boston and Reading), licences and inspections excluded. That is why these totals are lower than the monthly archive above.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | 462 | 417 | 539 | 528 | 463 | 500 | 564 | 507 | 513 | 589 | 462 | 472 |
| 2026 | 426 | 407 | 553 | 507 | 446 | 516 | 534 | 520 | 505 |
Before you plan work in Somerville
Somerville's Building Division, part of Inspectional Services at 1 Franey Road, requires a building permit before any work to construct, reconstruct, alter, repair or demolish a structure or install a sign, displayed prominently on site; ordinary repairs such as painting, tiling and flooring are the exception. Interior gutting takes a building permit, a total teardown a demolition permit. Applications go through the city's Citizenserve portal, and paying a review fee is the first step — if the project needs no plan review, that fee counts toward the building permit fee. The division's FAQ sets out who may apply: the owner-occupant of a one- or two-family home may pull the building permit with proof of residence, an estimated cost affidavit, plans where required and the workplace safety and wage theft affidavits; three-family and larger and commercial buildings need a licensed contractor, who files a CSL, an HIC registration where the property is one to four owner-occupied units, insurance, the signed contract, a site safety plan and OSHA certification; and every electrical permit goes to a licensed electrician and every plumbing or gas permit to a licensed plumber.
Allowed construction hours in Somerville are 7 a.m. to 7 p.m. on weekdays and 9 a.m. to 7 p.m. on Saturdays. The public service window is open Monday to Thursday 9 to 11 and 1 to 3 and Friday 9 to 11 for quick questions, help with online applications and payment drop-off, closing fifteen minutes before the end; longer meetings are by appointment through the administrative staff at extension 5600. Kevin Klein is the Interim Director of Inspectional Services.
Towns near Somerville
Frequently asked questions
Do I need a permit to replace my furnace, boiler or AC in Somerville?
Yes. A gas furnace, boiler or water heater is gas-fitting work, and Massachusetts issues gas permits only to a licensed plumber or gas fitter. Central AC and heat pumps need an electrical permit pulled by a licensed electrician, and Somerville may require a mechanical permit for the equipment. The licensed contractor pulls these permits.
Read the full Massachusetts guideDo I need a permit to install a heat pump or mini split in Massachusetts?
Yes. The state's guidance is that a ductless mini split is regulated equipment and needs a building permit, and the wiring needs an electrical permit from a licensed electrician. A ducted system adds a sheet metal permit for the ductwork. If you want the Mass Save rebate, the system must also be installed by a contractor in the Mass Save Heat Pump Installer Network.
Read the full Massachusetts guideDo I need a permit to replace windows in Massachusetts?
Plan on it. Window and door replacement is not on the building code's list of permit-exempt work, and anything that changes a bedroom egress window or the size of an opening is never exempt. Whether a same-size swap counts as an ordinary repair is the local building department's call. On an owner-occupied one- to four-family home the contractor must be a registered Home Improvement Contractor and should pull the permit.
Read the full Massachusetts guideDo I need a permit to replace siding in Massachusetts?
Plan on it. Residing a house is not among the projects the Massachusetts building code exempts from a permit, and the "ordinary repairs" exemption covers patching, not recladding. On an owner-occupied one- to four-family home the contractor must be a registered Home Improvement Contractor and should pull the permit; the local building department settles borderline cases.
Read the full Massachusetts guideDo I need a permit to replace my roof in Somerville?
Yes. Re-roofing is not exempt under the Massachusetts building code, so Somerville will expect a building permit, pulled by a licensed construction supervisor. On an owner-occupied one- to four-family home the roofer must also hold Home Improvement Contractor registration.
Read the full Massachusetts guideHow long is a building permit good for in Massachusetts?
Under 780 CMR 105.5, a permit becomes invalid if the work has not started within 180 days of issue, or if the work is suspended or abandoned for 180 days once begun; the building official can extend it in writing for up to 180 days at a time on a written request made before it expires. An application that is filed but not pursued is treated as abandoned after 180 days, with extensions of up to 90 days at a time.
Read the full Massachusetts guideAre building permits public record, and how do I look one up for an address in Somerville?
Yes, permits are public records. Somerville uses Citizenserve, linked at the top of this page, where you can search by address. The recent filings table on this page shows the same public data with the street, date and permit type.
Read the full Massachusetts guideCan a homeowner pull their own permit?
Sometimes, and it is usually a mistake. The state building code lets the owner-occupant of a one- or two-family home apply for a building permit for their own home, but never for electrical, plumbing or gas work, which only the licensee may do under their own permit. Mass.gov also warns that a homeowner who pulls the building permit may lose eligibility for the Guaranty Fund if a registered contractor's work goes wrong. Let the contractor pull it.
Read the full Massachusetts guideWhat happens if work is done without a permit?
The town can order the work stopped, opened up for inspection, corrected, or removed, and unpermitted work surfaces at sale when a buyer's attorney searches the permit history. For electrical work the state's own advice is to hire a licensed electrician to review it, pull a permit for it, and bring it up to code. It is far cheaper to permit it the first time.
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