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South Shore Home Guide

Guide

How to read a Massachusetts home improvement contract

What Massachusetts law requires in a residential home improvement contract, what each provision protects you from, and the five clauses to read twice before signing.

April 22, 2026 · 5 min read · South Shore Home Guide Editorial

Massachusetts has one of the more specific home improvement contract statutes in the country. The requirements are not subtle, and they are not optional. If a contractor hands you a one-page estimate and asks for a deposit, that is not a Massachusetts home improvement contract. It is a preview of how that job is going to be run.

This is a plain-English read of what the law requires and what each provision is actually protecting you from. It does not replace a lawyer. It does give you the questions to ask before you sign.

When the Home Improvement Contractor law applies

The statute is Massachusetts General Law chapter 142A. It applies to residential work on an existing 1-to-4 unit, owner-occupied dwelling when the total value of the work is more than $1,000. That covers almost every remodel, roof, siding, deck, kitchen, bath, and window project on the South Shore.

It does not apply to work on new construction (that falls under the Construction Supervisor License regime), to commercial property, or to projects under $1,000. It also does not apply to a handful of specific trades licensed separately, most notably plumbing and electrical work. That said, a general contractor coordinating those trades on a covered project still has to produce a compliant contract.

What the law requires to be in writing

Under MGL 142A, a home improvement contract must include, among other things:

  • The contractor’s name, address, and Home Improvement Contractor (HIC) registration number.
  • A detailed description of the work to be performed and the materials to be used.
  • The agreed-upon dates for commencement and substantial completion.
  • The total contract price and a payment schedule.
  • A notice of the homeowner’s three-day cancellation right (the contract cannot be cancelled after those three days have passed, so this is a window you should actually use if something feels wrong).
  • A notice regarding the existence of the Home Improvement Contractor Guaranty Fund, which can reimburse homeowners (up to a cap) if a registered contractor leaves the work unfinished or defective.
  • Notice of any permits the contractor is responsible for pulling.

You can verify whether a contractor’s HIC registration is current at the HIC registration lookup maintained by the Office of Consumer Affairs and Business Regulation.

The five clauses to read twice

1. The deposit cap

Massachusetts law limits initial deposits to one-third of the total contract price, or the actual cost of any special-order materials, whichever is greater. That is the ceiling. A contractor asking for 50 percent upfront on a straightforward remodel is asking you to break the law alongside them.

If the contractor points to a line item they are calling “special order” to justify a larger deposit, ask to see the supplier order and the deposit amount that supplier requires. Legitimate custom cabinetry suppliers, for example, often require a 50 percent deposit at the time an order is placed. Your deposit to the contractor for that line item is allowed to match that, separately from the standard one-third.

2. The payment schedule

The payment schedule should tie payments to milestones, not calendar dates. “$15,000 on May 1” is a red flag. “$15,000 upon rough framing inspection sign-off” is how a well-run project actually works. Milestones give you a contractual reason to withhold payment if the work has not reached the stated point.

Retain at least 10 percent of the total contract until the final town inspection signs off and any punch list items are completed. That final retention is your only real leverage to get the contractor back on site for small items once most of the money has been paid.

3. The change order process

Real projects produce change orders. That is not a problem on its own. The problem is an undocumented verbal change order that resurfaces as a line item on the final invoice. The contract should require change orders to be in writing, signed by both parties, and include a cost and a schedule impact.

If the contract is silent on change orders, add a clause before signing. A contractor who objects to putting change orders in writing is telling you how change orders will be handled on your job.

4. The lien waiver

Under Massachusetts mechanics lien law, a subcontractor or supplier who is not paid by the general contractor can file a lien against your property even if you have paid the general contractor in full. The protection against that is a lien waiver.

A well-drafted contract requires the contractor to provide conditional lien waivers from all subs and material suppliers with each progress payment, and unconditional lien waivers at final payment. This is a standard clause in commercial construction and it works the same way on residential.

5. Dispute resolution

Massachusetts offers an optional arbitration program for HIC disputes, and the contract can include a binding arbitration clause. Read it carefully. Binding arbitration can be faster and cheaper than court, but it narrows your options if the dispute is serious. You are allowed to negotiate this clause, including striking it entirely.

What to do if something goes wrong

If a contractor abandons a job or refuses to correct defective work, you have three primary recourses:

  1. File a complaint with the Office of Consumer Affairs and Business Regulation against the HIC registration.
  2. File a claim against the Home Improvement Contractor Guaranty Fund (subject to cap and eligibility).
  3. Sue in court or file through the HIC arbitration program.

Option 2 is the one most homeowners do not know about. The Guaranty Fund exists specifically because the state recognizes that even licensed contractors sometimes fail. The fund is not a blank check, but it is a real option and it is paid for by a portion of the HIC registration fee every contractor pays.

One last thing

If the contractor hands you a contract and asks for a deposit the same day, slow down. The three-day cancellation window is not a trick question. Take the contract home, read it once at your desk, and read it again out loud. A contract that looks fine on first read sometimes reveals a surprise when you hear the words.