Massachusetts lets owners supervise work on their own one or two family home without a supervisor license, with limits on repeat builds, trades and permits.
Massachusetts lets a homeowner do building work on their own one or two family home without holding a construction supervisor license, as long as the owner stays on the job as the supervisor. That sounds simple, but the exemption has edges: it is written for people who live in the home, it ends when someone builds more than one home in two years, and it does not reach plumbing, gas or most electrical work the way it reaches carpentry. Pulling your own permit can also cost you protections that a registered contractor would otherwise bring. This guide walks through what the exemption covers, what it leaves out, and when a business needs a licensed professional instead.
At a glance The exemption sits in the state building code, 780 CMR 110.R5, and applies when the work needs a building permit. A homeowner is a person who owns land where they live or intend to live, with a one or two family dwelling plus accessory or farm structures. A person who builds more than one home in a two year period is not treated as a homeowner. If the owner hires anyone to do the work, the owner must act as the supervisor. Owners who pull their own permit may lose access to the Home Improvement Contractor Guaranty Fund.
For the full license ladder, see our Massachusetts contractor license guide. This page covers only the owner path.
What the exemption says
Massachusetts requires a licensed construction supervisor, or a registered design professional, to oversee construction on one and two family homes and their accessory structures. The state's own page on when a supervisor license is required points readers to Chapter 1 of 780 CMR for the homeowner exemption language. Building departments apply it through 780 CMR 110.R5, and many towns print it on a homeowner affidavit.
Worcester's building department quotes the rule this way: owner occupied one and two family dwellings performing work for which a building permit is required shall be exempt, and if the homeowner hires people to do the work, the homeowner shall act as supervisor. The exemption does not apply to the field erection of manufactured buildings.
Who counts as a homeowner
The Boston and Brookline affidavits repeat the definition in 780 CMR 110.R5.1.2. A homeowner is a person who owns a parcel of land on which he or she resides or intends to reside, with a one or two family dwelling, plus accessory or farm structures on it.
The same text closes the loophole for builders. A person who constructs more than one home in a two year period is not considered a homeowner. That is the line between a family building its own house and a seller using the exemption to run a repeat business.
| Situation | Exemption likely available? | Why |
|---|---|---|
| Add a deck or addition to the home you live in | Yes | Owner occupied, permit required, owner supervises |
| Build the single family home you will move into | Yes | You intend to reside there |
| Build a second house within two years of the first | No | More than one home in two years |
| Work on a rental building you own but do not live in | Not on this basis | The definition is built around owner residence |
| Build for a customer | No | Not your own home |
What the owner has to do
Three duties come with the exemption. The first is to stay on the job. If the owner hires carpenters, framers or other workers, the owner is the supervisor and signs a statement saying so. The Brookline form says the owner acknowledges being required to act as the supervisor for the project.
The second is to follow the permit and inspection process. The Boston affidavit has the owner accept responsibility for the Building Division's minimum inspection procedures. The third is to read the affidavit before signing, because it is a sworn statement and each town words it a little differently.
What the exemption does not cover
- Building work for other people. The exemption is about your own home.
- Multiple homes in two years. A second build inside the window removes homeowner status.
- Plumbing and gas fitting. Under 248 CMR 3.05, plumbing and gas fitting permits are issued to properly licensed individuals only. The rule lists a few jobs that need no permit, such as repairing a leak in a faucet or valve and clearing a stoppage.
- Electrical work. Towns handle this differently. Carlisle issues a homeowner electrical permit with a letter from the owner's insurer, while Salisbury tells residents this work must be done by a licensed and permitted professional. Ask your local wiring inspector before you buy materials.
- Registered contractor protections. See the next section.
Pulling your own permit and the Guaranty Fund
The state home improvement program registers contractors who work on existing owner occupied homes with one to four units. Homeowners who work with a registered contractor get access to an arbitration program and a Guaranty Fund. The Boston affidavit warns that owners who pull their own permit, or who use unregistered contractors for home improvement work, do not have access to either one.
The Office of Consumer Affairs and Business Regulation says the same in plain terms for the fund: if you apply for the building permit, you may not be eligible for compensation from the Guaranty Fund. For details on that registration, read our Massachusetts home improvement contractor registration guide. If a job is large or risky, letting a registered contractor pull the permit may be worth more than the permit fee you save.
A practical checklist for Massachusetts homeowners
- Confirm you own the property and live there, or will live there when the work is done.
- Count your builds. If this would be a second home inside two years, plan on a licensed supervisor.
- Ask the building department for its homeowner exemption affidavit and inspection list.
- Decide who will supervise day to day. If it is you, plan to be on site.
- Ask about electrical, plumbing and gas permits separately and hire licensed trades where the town requires it.
- Decide whether you want a registered contractor pulling the permit so Guaranty Fund and arbitration access stay open.
When a business needs a licensed supervisor instead
The homeowner exemption ends where the work becomes a business. A company that builds for customers needs a licensed construction supervisor on its projects. Our Massachusetts construction supervisor license guide explains the license types and what each allows.
A qualifying agent QUALIFIES a company. The qualifier holds the credential the company works under, and is a full time W-2 employee of that company. If you are moving from your own projects to a contracting business, start with what a qualifying agent is, then compare options to hire a qualifying agent or review the consultation packages. If you already hold a license and want to qualify companies, see how to become a qualifying agent. Our founders, Marshall Schofield and Jeremiah Jaskulski, have placed qualifiers with contractors in many states. For the owner versus employee question, read owner or employee as the qualifier.
Owner exemptions differ a lot from state to state. Compare the Georgia owner builder exemption and the Tennessee owner builder exemption.
Frequently asked questions
Can I build an addition on my own house in Massachusetts without a license? Generally yes, under the homeowner exemption in 780 CMR 110.R5, if the work needs a building permit, you own and live in the home, and you act as supervisor for any workers you hire.
Do I need a construction supervisor license to supervise my own project? Not when the homeowner exemption applies. The exemption is the reason the owner can act as supervisor.
Can I build and sell two houses in two years under this exemption? No. A person who constructs more than one home in a two year period is not considered a homeowner.
Does the exemption cover plumbing and gas work? No. Plumbing and gas fitting permits go to properly licensed individuals under 248 CMR 3.05.
Will I lose any protections by pulling my own permit? Possibly. State guidance says a homeowner who applies for the permit may not be eligible for Guaranty Fund compensation.
Is this legal advice? No. It is general information. Confirm the current rule with your local building department or the Division of Occupational Licensure.
Sources
- Massachusetts: When is a Construction Supervisor License required?, Division of Occupational Licensure
- Homeowner license exemption affidavit, City of Boston
- Homeowner exemption affidavit, Town of Brookline
- Worcester building department homeowner licensing page, City of Worcester
- HIC homeowner resources, Office of Consumer Affairs and Business Regulation
- 248 CMR 3.05, permits and inspections, via Cornell Legal Information Institute
- Homeowners electrical permit guidelines, Town of Carlisle
Disclaimer: This article is provided for educational and informational purposes only. It does not constitute legal advice, licensing guidance, or an offer of services. Licensing requirements vary by jurisdiction. For specific compliance questions, contact The Licensing Company for a confidential consultation.