I pulled our live MLS PIN feed this morning. It carried 39,195 Massachusetts listings sitting in eight statuses: Active, Under Agreement, New, Contingent, Price Changed, Extended, Back on Market, Reactivated. That is the entire universe a consumer site can show you.
There is a ninth status in Pinergy, the MLS PIN platform every Massachusetts agent works in. Our feed carried zero of them. So did Zillow’s, so did Redfin’s, so did every other portal in the state, because the rule that creates that status also forbids syndicating it. It is called Coming Soon, and a house can sit in it for 21 days.
That gap is the whole story. For the last week the industry press has been covering a fight between Zillow, StreetEasy and Compass over who gets to hide a listing and for how long. Almost none of that coverage mentions that Massachusetts has had a written, broker-approved answer to the question for years, filed under Rule 1.3, and that it gives a seller more choices than the national argument admits exist.
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What actually changed in the last ten days
Two things, in opposite directions, eight days apart.
On September 17, StreetEasy started enforcing an updated Listings Quality Policy in New York City. The standard is blunt: if you market a for sale listing publicly, it has to be on StreetEasy that same calendar day. Post it to Instagram, put it on your brokerage site, submit it to the RLS, and the clock is the calendar day, not a business day. The policy page lays out the escalation. First violation is a notice. Second is a final warning. On the third, as StreetEasy puts it, “the listing is blocked. It will not be accepted for display on StreetEasy or syndication to Zillow or Trulia.” The agent also loses StreetEasy Experts eligibility.
On September 22, Compass answered with the biggest redesign of Compass.com in a decade, built around a feature called See It First that pulls pre-market and coming soon inventory from all nine of its brands into one search experience. HousingWire reported the seller pitch in Compass’s own words: test and learn on price and demand “without public days on market.” Compass says Compass.com traffic was up 56% year over year in August, and it is backing the launch with a national ad campaign.
Here is the part the summaries keep getting wrong. Zillow’s national ban is over. It ran from April 2025 until March 17, 2026, when Zillow rewrote the Listing Access Standards to drop the 24 hour MLS requirement and the list of prohibited marketing tactics entirely, replacing all of it with a broad access test. A listing now qualifies if consumers can see it without registering, without working with the listing brokerage, and without joining a private network. As Real Estate News put it, the MLS became optional. Compass voluntarily dismissed its antitrust suit the next day, on March 18, 2026, after losing its preliminary injunction motion on every claim on February 6.
So the accurate framing is narrower than the headlines. Zillow loosened nationally in March. StreetEasy, which Zillow owns, tightened in New York City in September. Compass pushed harder on pre-market inventory three business days after that. If you are selling in Arlington, none of it is a rule you are subject to.
None of this binds a Massachusetts seller, and here is why
MLS PIN is not a NAR-owned MLS. It is one of the largest broker-owned multiple listing services in the country, running since 1999, covering all of Massachusetts and Rhode Island plus much of New Hampshire, with a subscriber base above 37,050 real estate professionals.
That ownership structure matters more than it sounds. NAR’s Clear Cooperation Policy, the 2019 rule requiring a listing to go into the MLS within one business day of public marketing, was mandatory for MLSs owned by Realtor associations. MLS PIN was never one of those, so it was never required to adopt it. Banker & Tradesman made that point back when NAR was deciding whether to keep the policy at all. MLS PIN instead wrote its own rules that broadly echo it, and in a couple of places go further.
Meanwhile the national policy is still in court. thePLS.com, the private listing network backed by Mauricio Umansky, refiled its antitrust case against NAR in July 2025 after the original 2020 suit was dismissed without prejudice, and the case was still in discovery this summer. NAR kept Clear Cooperation and bolted a new category onto it in March 2025 called Multiple Listing Options for Sellers, which lets each MLS set its own delayed marketing window, including zero days.
Massachusetts did not need that policy. We already had the window, and ours has a number on it.
Rule 1.3, in plain English
MLS PIN’s baseline obligation is the Deadline for Filing. Per the association’s own Rules at a Glance, a listing of a mandatory property type has to be filed within 24 hours, excluding weekends and holidays, from the moment the listing broker receives the signed listing agreement. Single family homes, condos, two to four family buildings and vacant land are all mandatory types.
Rule 1.3 is the set of exceptions, and there are three of them.
1.3(a), the Non-MLS Listing. The seller signs a Non-MLS Listing Form before the filing deadline. The property never becomes a listed property and never appears in any MLS PIN compilation. This is the true office exclusive. Nobody outside the listing broker’s own office has any way to learn it exists.
1.3(b), the Delayed Listing. The seller and the broker agree to postpone the filing itself. A Delayed Listing Form goes in by the normal deadline, naming either a fixed future date or a date still to be determined.
1.3(c), Coming Soon. The listing is filed on time, into an off market status, with showings deferred to a fixed future date the seller names. The rule caps that date, and the cap is the number worth memorizing: it “shall not exceed twenty one days from the date of Filing the Listing.”
There is a fourth lever almost nobody mentions, and it is not in Rule 1.3 at all. A seller can go straight to New status, fully on market and syndicated everywhere, and still defer showings. Under MLS PIN’s own summary, showings may be deferred until the earlier of 7 days after the listing first appears as New, or 21 days after it was first filed as Coming Soon. So you can be on every portal on a Tuesday and hold your first showing the following Monday. That combination is the right answer more often than either extreme, and it almost never comes up in the national coverage because outside Massachusetts it mostly does not exist.
| Active / New | Coming Soon · 1.3(c) | Office Exclusive · 1.3(a) | |
| Who can see it | 37,050 MLS PIN subscribers and the public | 37,050 MLS PIN subscribers | One brokerage office |
| Showings allowed | Yes, or defer up to 7 days | No. None, by any broker | Yes, privately |
| Zillow, Redfin, Realtor.com | Yes | No. Not syndicated | No. Never enters the MLS |
| Days on market clock | Running | Does not accrue | Does not exist yet |
| Time limit | None | 21 days, hard cap | None |
| Form the seller signs | Listing agreement | Coming Soon and Deferral of Showings Form | Non-MLS Listing Form |
Coming Soon is the option that actually earns its keep
Read Compass’s September 22 seller pitch again: test price and demand “without public days on market.” Massachusetts sellers have had exactly that, inside the cooperative system, at no cost, for years. MLS PIN’s own Coming Soon flyer says it in one line: “Coming Soon is an ‘off-market’ status. Days on Market will not accrue for any time that a listing spends in the CSO status.”
Here is what else that flyer establishes, and these are the details that make the option genuinely useful rather than a technicality.
- A Coming Soon listing “is visible to all MLS PIN Subscribers.” All 37,050 of them, statewide, the same day you file.
- “The listing Broker is permitted to advertise its own Coming Soon listing outside of the MLS.” Sign in the yard, social posts, brokerage site, email to your own database. All fine.
- MLS PIN “will not syndicate the listing to third parties while it is in the CSO status.” No IDX, no VOW, no portals.
- “While a listing is in the CSO status, no Broker is permitted to show the property to any prospective buyer.” Nobody gets a private preview. Not even the listing agent’s own client.
- The seller signs a Coming Soon and Deferral of Showings Form, which the office returns to MLS PIN within 24 hours excluding weekends and holidays.
- At the end of the period the listing “will automatically change to the NEW status” with no further action required.
That last bullet is the quiet genius of the rule. The seller cannot drift. Twenty one days is the outer edge, and when it arrives the house goes on market whether anyone remembered or not.
Put those together and Coming Soon does something a private network structurally cannot. Every buyer agent in the state learns your house exists on day one and starts calling their clients, while your days on market stay at zero and nobody tracks mud through the kitchen before the new floors are finished. That is a real, defensible use case. I have used it. The prep work is the reason to use it, not the secrecy.
What filing late actually costs in Massachusetts
I can measure part of this directly. Every MLS PIN listing carries the date the seller signed the listing agreement and the timestamp it was first entered into the system. The gap between them is how long a property stayed out of the cooperative system after the seller had already committed to selling.
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Across 38,108 Massachusetts residential sales that closed between January 1 and September 23 of this year and carry a complete filing record, 37,634 were entered within one day of the seller signing. That is 98.8%. Compliance with the 24 hour Deadline for Filing in this state is close to total.
Then I looked at how the two groups did. The chart below is the share of sales in each group that closed for more than the seller’s original asking price.
I want to be straight about what this does and does not prove. The delayed group is tiny and it selects itself. Some of those 474 properties were odd, or tenant occupied, or had a seller who changed their mind twice. You cannot read a clean causal penalty off a sample that small, and I am not going to pretend otherwise. What you can read is a direction, and the direction is consistent with everything else: the on time group’s median sale landed at 100.0% of the original ask with a median market time of 21 days. The 8 to 21 day group landed at 99.0% and took 40.
In Newton and Arlington right now, an office exclusive is a bad trade
This is where I part ways with the national framing entirely, because the tradeoff is not abstract. It depends on how many buyers are competing for your specific house in your specific town, and in the inner suburbs that number is high.
Statewide, the Massachusetts Association of Realtors put single family supply at 2.4 months in August, against 4.6 months nationally. The state median sale price was $695,000, up 2.2%, and sellers collected 99.5% of their original asking price. Those are tight market numbers.
Here is the same window cut by town, out of MLS PIN directly.
| Town | Sales | Median sale | Median % of original ask | Sold above original ask | Median market time | Months of supply |
| Arlington | 140 | $1,350,000 | 104.0% | 63.6% | 19 days | 1.6 |
| Medford | 139 | $905,000 | 101.5% | 58.3% | 16 days | 3.1 |
| Belmont | 75 | $1,620,000 | 100.5% | 53.3% | 19 days | 3.4 |
| Cambridge | 89 | $2,460,000 | 100.0% | 47.2% | 15 days | 2.7 |
| Newton | 350 | $1,879,500 | 99.6% | 44.6% | 22 days | 3.5 |
| Somerville | 50 | $1,300,000 | 100.0% | 44.0% | 21 days | 4.0 |
| Brookline | 81 | $2,525,000 | 97.7% | 32.1% | 31 days | 5.9 |
Look at Arlington. One hundred forty single family sales this year, and the median one closed at 104.0% of its original asking price. Nearly two out of three, 63.6%, sold for more than the seller first asked. At Arlington’s $1,350,000 median, that 4% works out to roughly $52,000 of upside created by people bidding against each other. There are 25 single family homes actively listed in Arlington today against a pace of about 16 sales a month. That is 1.6 months of supply.
You do not get $52,000 of competitive tension from one brokerage’s client list. You get it from every buyer agent in eastern Massachusetts seeing the listing the same morning and putting their people in the car. Newton is less frenzied at 3.5 months of supply, but 44.6% of its 350 sales still cleared the original ask.
One more number from the same pull, and it surprised me. Across all 140 Arlington and all 350 Newton single family closings this year, exactly zero went under agreement with a market time of one day or less. Not one. Cambridge had two, Medford three. In the two most inventory constrained towns I work in, the quiet pre-arranged deal that the national coverage treats as standard practice essentially did not happen. Every one of those houses went through the open market, and the open market paid.
The national studies disagree, and you should know how
I would rather show you the fight than pick the side that flatters my argument.
Zillow’s research team released a study on May 14, 2026 covering 6.2 million transactions that met its inclusion criteria from 2023 through 2025. It found sellers who stayed off the MLS typically sold for 1.3% less, about $4,230 a home, or $1.36 billion in aggregate. The penalty was worse at the bottom of the market, where lower priced sellers typically lost 2.2%.
Compass ran its own numbers on more than 70,000 listings from April 2025 through March 2026 and reported that pre-marketed homes sold for 4.6% more. Zillow economist Mischa Fischer’s objection, reported by RISMedia, is that Compass’s comparison leans on homes that failed to sell in the first two private phases and then went public, which is a selection problem, not a marketing result. Compass has not published which of its 50 or so control variables it used. Outside both camps, a University of Georgia study by Dr. Darren Hayunga looked at more than 700,000 Dallas Fort Worth listings across 20 years and found a pre-marketing premium of 1.7%.
Two honest conclusions. First, the effect is small and contested in every direction, which by itself should tell you that secrecy is not a large lever on price. Second, none of these national studies are measuring Massachusetts, where 98.8% of listings hit the MLS within a day and inner suburban supply is under two months in places. A 1.3% national average tells you very little about a Jason Heights colonial in Arlington with 24 other single family homes to compete against in its own town.
If you are buying, the portal is not your search
Flip the whole thing around and the buyer’s problem is sharper than the seller’s.
A Rule 1.3(a) office exclusive is invisible. It is not on Zillow, not on Redfin, not on Realtor.com, not on our site, and not in Pinergy. The only people who know about it are agents in one office. Compass alone lists 571 agents in Boston, and it is one of several brokerages running a pre-market program here.
A Coming Soon listing is a different kind of invisible. It is in MLS PIN, so any agent in the state can see it and call you about it, but it is deliberately kept out of every consumer feed for up to 21 days. MLS PIN’s own agent guidance is specific about how tight that seal is: Coming Soon listings cannot be displayed on a VOW, cannot be attached to a contact in Contact Manager, and cannot be fed to ShowingTime until the status flips to New.
So if you are shopping Cambridge or Somerville on portal alerts alone in a market with a 15 day median market time, you are not seeing the market. You are seeing the part of the market that has already been public long enough to syndicate. That is not a knock on the portals. They show you exactly what the rules let them show you. It is an argument for having a buyer’s agent with Pinergy access who is actually looking at Coming Soon inventory in your towns every morning, which is a thing you should ask any agent to demonstrate before you hire them. Our buyer side page walks through how we set that up.
What to ask before you sign anything
If your agent proposes going quiet, here are the five questions that get you a real answer.
- Which rule are we using? Make them say 1.3(a), 1.3(b), or 1.3(c). If they cannot name it, they may not know the difference, and the three outcomes are not close.
- What form am I signing, and can I read it first? The Non-MLS Listing Form and the Coming Soon and Deferral of Showings Form are different documents with different consequences. Ask for the one that matches the answer to question one.
- Who sees it, in numbers? 37,050 MLS PIN subscribers, or the agents in one office. Ask for the count, not the adjective.
- What is my exit date? Coming Soon self destructs at 21 days. An office exclusive has no clock at all, so write one into the listing agreement yourself.
- What is the specific reason, and does it expire? Floors being refinished, a tenant needing notice, photos not shot yet, a family matter you do not want on the internet. Those are real and they all have end dates. “Building buzz” is not a reason to leave the cooperative system, it is a reason to use Coming Soon, which was built for exactly that.
My own default in Greater Boston right now is short and boring. File on time. If the house genuinely is not ready, file Coming Soon and use every one of those 21 days on prep, photography and pricing, not on secrecy. If it is ready, go to New and defer showings a week to stack up the first weekend. Save the true 1.3(a) office exclusive for the narrow cases where privacy itself is the point, and go in knowing you are trading exposure for it in a market that is currently paying for exposure.
The national fight is about storefronts arguing over what they will agree to display. Your options as a Massachusetts seller were settled somewhere else, in a rulebook written by the brokers who own the MLS, and it is more generous than the two option framing you are being handed. If you want to talk through which of the three applies to your house, reach out or call me at 617-955-2224. Happy to walk through it with your specific timeline in front of us.
Sources
- MLS PIN Complete Rules and Regulations, Section 1.3
- MLS PIN Rules at a Glance
- MLS PIN, Facts About MLS PIN’s Coming Soon Status
- MLS PIN, A Step by Step Guide to the Coming Soon Status in Pinergy
- MLS PIN, About
- StreetEasy Listings Quality Policy
- HousingWire, StreetEasy listings policy targets same day marketing
- HousingWire, Compass launches See It First as part of Compass.com redesign
- Real Estate News, Zillow’s simplified listing standards make the MLS optional
- Wilson Sonsini, Compass voluntarily dismisses antitrust suit against Zillow
- NAR, Multiple Listing Options for Sellers
- NAR, MLS Clear Cooperation Policy
- HousingWire, NAR discovery tactics in Clear Cooperation suit draw scrutiny
- Banker & Tradesman, As NAR punts on Clear Cooperation, local brokers argue it should stay
- Zillow research release, May 14, 2026
- RISMedia, How dueling real estate data studies are shaping the private listings fight
- Massachusetts Association of Realtors, Monthly Indicators, August 2026
- MLS PIN closed and active listing data, BMN Boston analysis, pulled September 24, 2026
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