Hiring a Contractor in Massachusetts: Registration, Contracts, Permits and the Guaranty Fund

Most people buy a house with a list: the kitchen, the third-floor bathroom, the windows the inspector did not like. Massachusetts gives homeowners more protection when hiring contractors than many states do, but the protection depends on details people skip: whether the contractor is registered, what the contract says, how much was paid up front, and who pulled the permit.

The essentials: a contractor doing renovation or repair work on an existing owner-occupied home of one to four units must be registered as a Home Improvement Contractor under M.G.L. c. 142A. Work over $1,000 needs a written contract with specific content, and the deposit is capped at the greater of one-third of the price or the actual cost of special-order materials. If a registered contractor fails to pay an arbitration award or a court judgment, the state's Guaranty Fund can pay up to $25,000 of the homeowner's actual loss. A homeowner who pulls the building permit as their own contractor gives that protection up.

Two credentials, and what each one covers

Home Improvement Contractor registration, issued by the Office of Consumer Affairs and Business Regulation. It is a consumer-protection registration rather than a test of skill, and it is what gives you access to the arbitration programme and the Guaranty Fund.
A Construction Supervisor License, issued by the Board of Building Regulations and Standards. Work requiring a building permit, structural work especially, must be supervised by a licensed construction supervisor, and there are restricted licences for specialties such as roofing, siding and windows.
Electricians and plumbers are licensed separately by their own boards, and only they may pull electrical and plumbing permits.

All three can be checked on the state's online licence lookup. Check before you sign, not after a problem.

What the written contract must contain

For work over $1,000, chapter 142A requires a written contract, signed by both parties, with a copy to the homeowner before work begins. Among other things it must state:

The contractor's name, address and registration number.
The start date and the date of substantial completion.
A detailed description of the work and the materials to be used.
The total price and the payment schedule.
The homeowner's right to cancel within three days.
Any lien or security interest on the house.

The law also forbids acceleration clauses, and forbids demanding final payment until the work is complete to the satisfaction of the parties. A contract missing these items is not automatically void, but its absence is a warning about the contractor.

The deposit rule

A contractor may not require a deposit greater than one-third of the total price, or the actual cost of any special-order materials or equipment, whichever is greater. Custom cabinets or windows ordered to size can justify more up front; ordinary work cannot.

Tie later payments to completed milestones — framing passed inspection, rough plumbing done, drywall up — rather than to dates, and keep the final payment until the work is finished and the permit closed.

The Guaranty Fund and arbitration

When a dispute with a registered contractor cannot be resolved, the homeowner can use the state's arbitration programme, run by the Office of Consumer Affairs, or go to court. If the homeowner wins and the contractor does not pay, the Home Improvement Contractor Guaranty Fund can pay up to $25,000 of the homeowner's actual loss.

The conditions are strict:

The contractor must have been registered on the date of the contract. An unregistered contractor's customers cannot claim.
There must be a judgment or arbitration award, and the homeowner must have made reasonable efforts to collect it.
The claim must be filed within six months of the judgment or award.

Permits: why the contractor should pull them

Building permits exist so that someone independent inspects work that affects safety. They also follow the house: a buyer's attorney or inspector who finds an addition with no permit behind it will ask about it, and unpermitted work is a recurring problem at resale. Researching a house's records shows how a buyer finds out.

A contractor who suggests the homeowner pull the permit "to save time" is asking the homeowner to act as their own contractor. A homeowner who obtains the permit as their own contractor is not covered by the Guaranty Fund, and takes on responsibility for the work meeting code. The permit application says so. Unless you are genuinely managing the job yourself, the registered contractor should pull the permit.

Choosing a contractor, and running the job

Get more than one bid, on the same written scope, so the prices are comparable.
Check registration and licences, and ask the Office of Consumer Affairs whether there are arbitration awards or complaints.
Ask for certificates of insurance: liability, and workers' compensation if they have employees. Without workers' compensation, an injured worker can become your problem.
Call references for similar jobs, and look at one if you can.
Put every change in writing, with its price, before the work is done.
Keep the paperwork: the contract, the permits, the inspection sign-offs, the warranties. They are what a future buyer will ask for.

When a job goes wrong

Start by putting the problem in writing to the contractor, with photographs and a reasonable deadline. Many disputes end there. If not, the arbitration programme is often quicker and cheaper than court, and registered contractors working on owner-occupied homes of one to four units are deemed to have agreed to it. Violations of the home improvement law can also be unfair or deceptive practices under consumer protection law, which a lawyer can advise on.

Which renovations pay back covers what to spend on, and renovation loans covers how to pay for it.

General information as of 2026, not legal advice. Registration, licensing, contract requirements and Guaranty Fund limits are set by chapter 142A and its regulations and can change; the Office of Consumer Affairs and Business Regulation publishes the current rules.