Six MLSs Sue Compass, Seeking to Block Lawsuits and Affirm Rules
So, I helped break this news yesterday that ARMLS, BridgeMLS, Canopy, REcolorado, Hive and Doorify filed in the Southern District of New York on Tuesday, same court as CRMLS, same ask: declare the cooperation rules legal and tell Compass to stop threatening to sue us. Rob already did the legal read, and even he admits it’s a well-drafted complaint.
But there’s one paragraph nobody has written about. Paragraph 76:
“Brokers use records of past sales and current listings in the MLS, including detailed sales information (such as closing price, marketing time, and concessions), to prepare comparative market analyses (“CMAs”) for potential sellers. Brokers then use these CMAs to persuade a seller to hire them, to recommend listing prices, and to advise on timing and other aspects of the sale. The Cooperation Rules thus prevent non-cooperating brokers from profiting from the cooperative’s shared information while withholding their own publicly marketed listings, which other brokers cannot then use in preparing their CMAs.”
For a year and a half this fight has been framed around the buyer. Can my buyer see your listing? Six MLSs just moved it to the listing appointment, and I’m here for it.
Every CMA ever made is built on somebody else’s closed sales. The comps are your competitor’s listings, your competitor’s price reductions, your competitor’s days on market, your competitor’s concessions. You never contributed a single one of them. The cooperative did. That’s the deal. You put yours in, you get everyone’s out, and the agent at the one-person shop walks into the listing presentation with the same data as the agent from the biggest brokerage in America.
Now look at Compass’s three-phase strategy. Private Exclusive, then Coming Soon on Compass.com, then (maybe) the MLS. Reffkin’s own line is that Compass should be known for having “more inventory than any other website or brokerage.” Fine. But the complaint’s point is that a listing which arrives in the MLS after it’s sold, or arrives without the price history and the DOM, isn’t a comp. It’s a receipt. Every Compass agent still gets to build CMAs on everybody else’s data. Everybody else gets to build CMAs on whatever Compass decided to share, whenever Compass decided to share it.
Now as many of you know, I’ve spent a long time on CMAs (I even wrote a book about them, so grain of salt). In our 2026 survey with Lone Wolf, a third of agents said they’d lost a listing over price, and price was the number one objection sellers raised. The CMA is how you win that argument. It’s the one document in the business where the data is the pitch. Degrade the data and you degrade every agent’s ability to tell a seller the truth about what their house is worth. Except, of course, the agents at the brokerage holding the inventory.
That’s the free ride. Not the buyer search. The listing presentation.
Rob’s answer (beyond blowing everything up) to all of this is to make Limited Exposure the only status and let brokers market however they want, as long as everything goes in the MLS. Notice that his fix and the MLSs’ complaint agree on the one thing that matters for the CMA: the listing has to be in the database, on time, with its history. Everything else is a fight about billboards.
Reffkin wants it known that Compass has more inventory than anyone. Paragraph 76 is six MLSs pointing out that his agents’ listing presentations are built on everyone else’s.
(Disclosure: I’m currently consulting with Lone Wolf on Cloud CMA, the product I co-founded. I have a dog in this fight and he’s a very good boy.)







