Middlesex County, Massachusetts
Dunstable, MA Building Department and Permits
- Dunstable Inspections & Permitting is at Town Hall, 511 Main Street, Dunstable, MA 01827.
- Dunstable Inspections & Permitting phone: 978-649-4514.
- Dunstable Inspections & Permitting hours: Admin Mon-Thu 9:00-4:00; Building Inspector Mon 2:00-4:00.
- Building permits in Dunstable are filed through PermitLink, the online permit portal.
- Dunstable is in Middlesex County, Massachusetts.
- Last verified 2026-09-16 against the Dunstable website.
Inspections & Permitting
- Phone
- 978-649-4514
- Hours
- Admin Mon-Thu 9:00-4:00; Building Inspector Mon 2:00-4:00
- Inspector of Buildings
- Dana E. Barnes, Building Inspector (ext. 226)
Verified 2026-09-16 against the official Dunstable website. Always confirm hours before visiting.
Do I need a permit in Dunstable, 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 Dunstable 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 DunstableReplacing 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 Dunstable 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 DunstableReplacing 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 Dunstable 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 Dunstable 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 DunstableRe-roofing and roof replacement are not among the projects the Massachusetts building code exempts from a permit, so in Dunstable 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 Dunstable 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 DunstableResiding a house is not on the list of work the Massachusetts building code exempts from a permit, so in Dunstable 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 Dunstable 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 Dunstable 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 Dunstable
75 permits on file across 3 months. Records through October 16, 2026, updated daily.
Last 90 days: 38 building, 14 electrical, 11 plumbing, 9 gas, 3 sheet metal.
Permits commonly pulled in Dunstable over the last twelve months: 38 building, 14 electrical, 11 plumbing, 9 gas and 3 sheet metal permits.
| Filed | Street | Type |
|---|---|---|
| Oct 16, 2026 | WESTFORD ST | Building |
| Oct 14, 2026 | FOREST ST | Electrical |
| Oct 12, 2026 | MAIN ST | Building |
| Oct 7, 2026 | ADAMS ST | Building |
| Oct 7, 2026 | GROTON ST | Building |
| Oct 5, 2026 | KEMP ST | Plumbing |
| Oct 5, 2026 | LOWELL ST | Building |
| Oct 5, 2026 | POND ST | Electrical |
| Oct 5, 2026 | KEMP ST | Gas |
| Oct 5, 2026 | KEMP ST | Electrical |
| Oct 5, 2026 | MAIN ST | Building |
| Oct 4, 2026 | PLEASANT ST | Plumbing |
| Oct 4, 2026 | PLEASANT ST | Gas |
| Oct 1, 2026 | POND ST | Plumbing |
| Oct 1, 2026 | UNKETY BROOK WAY | Gas |
| Sep 30, 2026 | OAK ST | Building |
| Sep 29, 2026 | GROTON ST | Building |
| Sep 25, 2026 | PLEASANT ST | Building |
| Sep 24, 2026 | HALL ST | Building |
| Sep 21, 2026 | CENTURY WY | Building |
| Sep 21, 2026 | CHAPMAN STREET | Building |
| Sep 21, 2026 | FOREST ST | Plumbing |
| Sep 21, 2026 | PLEASANT ST | Electrical |
| Sep 21, 2026 | BEAR HILL RD | Electrical |
| Sep 20, 2026 | HOLLIS ST | Building |
| Sep 20, 2026 | MAIN ST | Building |
| Sep 15, 2026 | MAIN ST | Building |
| Sep 14, 2026 | RIVER ST | Building |
| Sep 14, 2026 | OAK ST | Gas |
| Sep 14, 2026 | MAIN ST | Plumbing |
| Sep 14, 2026 | MASSAPOAG WY | Sheet Metal |
| Sep 14, 2026 | UNKETY BROOK WAY | Sheet Metal |
| Sep 14, 2026 | MASSAPOAG WY | Building |
| Sep 14, 2026 | MAIN ST | Building |
| Sep 13, 2026 | THORNDIKE ST | Building |
| Sep 8, 2026 | PARKHURST RD | Building |
| Sep 6, 2026 | GROTON ST | Building |
| Sep 6, 2026 | OAK ST | Electrical |
| Sep 6, 2026 | UNKETY BROOK WAY | Plumbing |
| Sep 6, 2026 | UNKETY BROOK WAY | Gas |
| Sep 6, 2026 | PLEASANT ST | Building |
| Sep 6, 2026 | PARKHURST RD | Plumbing |
| Aug 31, 2026 | ADAMS ST | Gas |
| Aug 31, 2026 | ADAMS ST | Electrical |
| Aug 31, 2026 | GROTON ST | Building |
| Aug 31, 2026 | THORNDIKE ST | Electrical |
| Aug 31, 2026 | POND ST | Building |
| Aug 31, 2026 | VALLEY ST | Plumbing |
| Aug 27, 2026 | HOLLIS ST | Building |
| Aug 27, 2026 | PLEASANT ST | Building |
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Before you plan work in Dunstable
Dunstable's Inspections Department, at Town Hall, 511 Main Street, handles building, electrical, gas, plumbing and sheet metal permits through PermitLink, its online application and payment system, and asks that the inspector be contacted directly for an inspection once the work is finished. The department's page is written for homeowners: a licensed plumber or gas fitter must do and permit all plumbing and gas work, down to replacing faucets, boilers, water heaters and gas appliances; only a Massachusetts-licensed electrician may apply for an electrical permit, and the plumber replacing a water heater should not be wiring it; building permits cover new construction as well as new roofs, windows, siding, accessory structures and pools, and a homeowner may act as general contractor but takes responsibility for all the work; and wood and pellet stoves need a permit and an inspection before use. Every application must carry copies of the applicable licences, the Department of Industrial Accidents insurance affidavit and any certificates of insurance, and new construction should go to the Board of Health for septic and well approval. The page warns that work without a permit risks a stop-work order, double fees or a fine and possible insurance and assessment consequences, and that the project is not complete until the final inspection. Building Inspector Dana E. Barnes keeps hours Monday 2 to 4 p.m., the administrative office Monday to Thursday 9 to 4; Peter Martin is the Electrical Inspector and John Cryan the Gas and Plumbing Inspector.
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Frequently asked questions
Do I need a permit to replace my furnace, boiler or AC in Dunstable?
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 Dunstable 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 Dunstable?
Yes. Re-roofing is not exempt under the Massachusetts building code, so Dunstable 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 Dunstable?
Yes, permits are public records. Dunstable uses PermitLink, 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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