Massachusetts Purchase and Sale Agreement Timeline

The Massachusetts purchase and sale agreement timeline, in short: an accepted offer binds the parties, the inspection date comes first, then the P&S is signed by the date in the offer, then the mortgage commitment date, then closing. In the MAR forms, inspection and mortgage termination notices are due by 5:00 p.m. the next calendar day.

More on this topic: Contract deadlines by state, every guide in one place.

Massachusetts has no single state-mandated form. This guide uses the Massachusetts Association of REALTORS Contract to Purchase Real Estate (#501) and Standard Purchase and Sale Agreement (#503); Greater Boston Real Estate Board forms and attorney-drafted agreements are common too, and their wording and numbering differ. Attorneys often draft or review the P&S. It's general information, not legal advice; the executed documents control. Other states: see the deadlines in a purchase contract.

Key takeaways

• The MAR offer (#501) is labeled a binding contract, and an accepted offer can be enforceable even before a P&S is signed.
• Most Massachusetts deadlines are dates written into the forms, not numbers of days.
• Inspection and mortgage termination notices must be received by 5:00 p.m. on the calendar day after the date written in; miss it and the contingency is waived.
• The P&S replaces the offer once signed; the deadline to sign it can be waived by the parties' conduct.
• Either party can extend closing 30 days by notice under P&S paragraph 10, or to a business day before the mortgage commitment expires.

What is the timeline from offer to closing in Massachusetts?

Two documents, five main dates. The offer sets them and the P&S restates or replaces them:

For a week-by-week view of the work in between, see the contract-to-closing timeline.

Is an accepted offer to purchase binding in Massachusetts?

It can be. The MAR #501 is headed “BINDING CONTRACT” and says the accepted offer forms a binding agreement on written notice of the seller's acceptance. In McCarthy v. Tobin, 429 Mass. 84 (1999), the Supreme Judicial Court enforced an accepted offer that was “subject to” a P&S never signed, because the parties intended to be bound and the offer had all the material terms; the later P&S was to be a polished memorandum of a binding deal, as Massachusetts Lawyers Weekly summarized in 2012. So the clock starts at acceptance, not at the P&S.

When is the home inspection deadline in Massachusetts?

On the date written into the offer. Under #501 paragraph 7, inspections happen by that date; if the results aren't satisfactory, in the buyer's sole discretion or above a repair-cost threshold the parties choose, the buyer may terminate by written notice received by the seller or seller's agent by 5:00 p.m. on the calendar day after that date. Late or no notice is a waiver, and the buyer then releases the seller and brokers from condition claims the inspectors could reasonably have found. The right to a home inspection under 760 CMR 74.00 can't be waived.

If inspections happen after the P&S instead, #503 paragraph 17 runs a set number of days after the seller's acceptance of the P&S, with the same 5:00 p.m. next-day notice. It's marked “Delete if Waived”, so it often comes out when inspections were done under the offer. See the repair request process.

When do you sign the purchase and sale agreement?

By the date and time written in #501 paragraph 4, on the MAR Standard P&S “or substantial equivalent”. Once signed, it becomes the entire agreement and the offer has no further force. The buyer pays the additional deposit written in paragraph 1 when the P&S is signed.

That deadline isn't always hard. In Ferguson v. Maxim (Appeals Court, November 6, 2019), as reported by Massachusetts real estate lawyer Richard Vetstein, the parties kept negotiating well past the P&S date without a written extension, and the court held the deadline could be waived by that conduct. If the date will slip, get a written extension.

How does the mortgage commitment date work?

The buyer must get a written commitment for the amount stated by the date written in (#501 paragraph 8, #503 paragraph 16). If the buyer can't despite diligent efforts, written notice received by 5:00 p.m. on the calendar day after that date terminates the agreement and returns the deposits. No notice in time and the condition is deemed waived. The buyer is treated as having made reasonable efforts only if at least one application went in by the application date and the buyer answered the lender promptly.

What happens at closing and can it be extended?

Closing is the time for performance in #503 paragraph 5: deed delivered and balance paid at the date, time and Registry of Deeds written in. Time is of the essence as to each provision. Unless documents record at closing, funds are held in escrow and disbursed the next business day.

Under paragraph 10, if the seller can't convey title or deliver possession as agreed, the premises don't conform, or the buyer can't get title insurance, written notice from either party by the time for performance extends it 30 days. If the mortgage commitment expires sooner, closing moves to one business day before it expires. Excluding known mortgages and liens, the seller doesn't have to spend more than 0.5% of the price to fix things.

Two documents with their own timing: the smoke and carbon monoxide detector certificate from the fire department, delivered at closing where the law requires it (#503 paragraph 19), and a Title 5 septic inspection, done within two years before transfer, three with yearly pumping records, or up to six months after if weather prevents it (310 CMR 15.301).

What does a Massachusetts timeline look like with real dates?

The dates are illustrative. Local practice on how many days to allow varies, so take each date from the executed documents. Because the MAR forms use written-in dates, the free contract timeline generator takes each one as an exact date and gives you a printable timeline and an .ics calendar file for the whole deal.

What happens if you miss a Massachusetts deadline?

The contingency is waived and the deal goes on. Both MAR forms make time of the essence, and late inspection or mortgage notices count as waivers. A buyer who then defaults risks the deposit as liquidated damages (#501 paragraph 10, #503 paragraph 15). See what happens if you miss a contingency deadline.

Which forms go with these deadlines?

How do you track Massachusetts purchase and sale deadlines without missing one?

Start a file the day the offer is accepted, not when the P&S is signed. Log each written-in date and, next to the inspection and mortgage dates, the real cutoff: 5:00 p.m. the following calendar day, received, not sent. When the P&S arrives, compare its dates with the offer's and update anything that changed.

In Closingbird, use the offer acceptance as the acceptance date and closing as the closing date. Because the MAR forms write dates rather than days, set a fixed date for each one: inspection, the P&S deadline, mortgage application and commitment. Closingbird doesn't move dates for you, so a paragraph 10 extension is a new fixed date you enter. Each owner gets a morning reminder, so make sure whoever sends the notice knows the 5:00 p.m. cutoff. See deadline tracking.

Frequently asked questions

How long after an accepted offer is the P&S signed in Massachusetts?

By whatever date the offer sets. There's no state-mandated number of days; it's negotiated and written into #501 paragraph 4.

Is an offer to purchase legally binding in Massachusetts?

It can be. The MAR #501 says it is, and McCarthy v. Tobin (1999) enforced an accepted offer with all material terms even though no P&S was signed.

What time is the mortgage contingency deadline in Massachusetts?

In the MAR forms, written notice must be received by 5:00 p.m. on the calendar day after the mortgage commitment date.

Can a Massachusetts closing be extended?

Yes. Under MAR #503 paragraph 10, either party can extend it 30 days by written notice for title, possession or conformity problems, or to one business day before an earlier mortgage commitment expiration.

Is there a standard purchase and sale agreement in Massachusetts?

There's no state form. The MAR and Greater Boston Real Estate Board publish standard forms, and attorneys often draft or edit the P&S.

Run it in Closingbird

Upload a Massachusetts offer or P&S, check the dates Closingbird fills in, and give each deadline an owner who gets a morning reminder. Start a free trial (14-day free trial, no credit card required) or see pricing.

Related reading

• The deadlines in a purchase contract
• New Jersey attorney review period
• The contract-to-closing timeline
• The earnest money deadline
• Deadline tracking in Closingbird

Sources

Checked in October 2026. Rules and prices change, and many vary by state, so confirm with the source, your state's real estate commission or your broker before you rely on them.

• Massachusetts Association of REALTORS: Contract to Purchase Real Estate #501 (With Contingencies), copyright 1999–2025 (copy posted by a broker, October 2025)
• Massachusetts Association of REALTORS: Standard Purchase and Sale Agreement #503 (With Contingencies), copyright 1999–2024 (copy posted by a broker)
• Massachusetts Lawyers Weekly: ‘McCarthy’ 13 years later, by Vincent J. Pisegna and Jonathan A. Scharf (June 11, 2012; copy hosted by Krokidas & Bluestein)
• Massachusetts Real Estate Law Blog (Richard D. Vetstein): Contract Deadlines Can Be Waived, on Ferguson v. Maxim (November 6, 2019)
• 310 CMR 15.301, Title 5 inspection at time of transfer (Cornell LII)