Offer to Purchase vs Purchase and Sale Agreement in Massachusetts

By James Brazil

James Brazil lives in Mérida, Mexico. He founded Swift Agent Sites and studied Classics at the University of Mississippi.

Published 6 November 2026 · Updated 6 November 2026

Real estate for buyers · Real estate for sellers

A typical Massachusetts home purchase uses two documents. First comes the Offer to Purchase, signed by the buyer and accepted by the seller. Later comes the longer Purchase and Sale Agreement, often called the P&S. Many people treat the offer as a formality. It is not: in McCarthy v. Tobin, 429 Mass. 84 (1999), the Supreme Judicial Court held that a signed offer on a standard form, with all the material terms, was a binding contract even though it said it was subject to a later Purchase and Sale Agreement.

So read the offer as carefully as the P&S. Whether a given offer binds you depends on its wording, and that is a question for a Massachusetts real estate attorney.

What is the Offer to Purchase?

The offer is usually a short form. It names the property, the price, the deposit, the closing date and the main conditions, such as financing and inspections. It also sets a date by which the parties will sign the P&S.

Deadlines in Massachusetts home sales come from the contract, not from a state statute. The offer and the P&S set the dates for the inspection, the mortgage commitment and closing. Read each date and count the days yourself.

Some things the law requires to happen before or around the offer stage:

• Home inspection brochure. Under M.G.L. c. 112, Section 87YY½, a home inspection brochure must be given to the buyer when the first written contract to purchase is signed. The same section bars brokers from directly recommending a specific home inspector unless a written agreement makes the broker the buyer's exclusive agent. On request, they can give the full list of licensed inspectors prepared by the state board.
• Lead paint notification. For a home built before 1978, the buyer must receive the Property Transfer Lead Paint Notification before signing the Purchase and Sale Agreement. See our lead paint law guide.

What happens between the offer and the P&S?

This window is usually when the buyer does inspections. In Massachusetts, home inspectors must be licensed under M.G.L. c. 112, Section 222 and must give a written report. Buyers of pre-1978 homes have at least 10 days, or longer if agreed, to get a lead inspection if they choose.

The buyer also starts the mortgage application, and the two sides draft and negotiate the P&S. Either side can have a Massachusetts real estate attorney draft or review it. If the home has a septic system, the Title 5 report should be in hand or scheduled. See the Title 5 guide.

What does the Purchase and Sale Agreement add?

The P&S is the detailed contract. It typically covers:

• The full legal description of the property and what is included, such as appliances
• Any additional deposit and who holds it
• The mortgage contingency and its deadline
• What happens if the title is defective or the property is damaged before closing
• Who handles items like the Title 5 inspection and the smoke and CO certificate
• Remedies if either side backs out without a contract right to do so

Check whether the P&S says it replaces the offer, and make sure any terms you negotiated in the offer carried over.

What should buyers watch?

• Know which conditions let you withdraw and keep your deposit, and the date each one ends.
• Do not let the inspection deadline pass while waiting for a report.
• Get the lead paint notification and sign its certification before signing the P&S on a pre-1978 home.
• Plan to record a declaration of homestead after closing if you want more protection than the automatic amount.

What should sellers watch?

• Accepting an offer can bind you. Be careful about accepting a second offer while one is signed.
• Book the smoke and CO inspection once there is a closing date. See the smoke and CO guide.
• Give the lead paint notification and any lead reports before the P&S is signed.

FAQ

Is a Massachusetts Offer to Purchase legally binding?

It can be. In McCarthy v. Tobin (1999), the Supreme Judicial Court found a signed standard-form offer was a binding contract. Whether yours is depends on its wording; ask a Massachusetts attorney.

How long between the offer and the P&S?

No statute sets it. The offer names the date, and the parties negotiate it.

When do I get the lead paint notice?

For pre-1978 homes, before you sign the Purchase and Sale Agreement. You then have at least 10 days, or longer if agreed, to get a lead inspection.

Can the listing agent recommend a home inspector?

Massachusetts law bars brokers from directly recommending a specific home inspector, except where a written agreement makes the broker the buyer's exclusive agent. They can provide the state's full list on request.

Should I have an attorney review the offer?

Because a signed offer can bind you, it is worth having a Massachusetts real estate attorney look at it, and at the P&S, before you sign.

Next step

A licensed local real estate agent can explain each date in your offer and help you schedule inspections inside those windows. Have a Massachusetts real estate attorney review the offer and the P&S before you sign.

Sources: McCarthy v. Tobin, 429 Mass. 84 (1999); M.G.L. c. 112, Section 87YY½, M.G.L. c. 112, Section 222, DPH: Property Transfer Lead Paint Notification, Property Transfer Lead Paint Notification, CLPPP Form 95-17 (PDF).