CRMLS files suit against Compass over listing rules 

On Oct. 5, a day ahead of Compass' deadline for multiple listing services to stop fining agents for publicly marketing office exclusive listings or face litigation, California Regional MLS (CRMLS) has called Compass' bluff and filed suit against the brokerage giant in federal court.

In a 119-page complaint, CRMLS asks the U.S. District Court for the Southern District of New York — Compass' home turf — to declare that its cooperation rules are lawful under the federal Sherman Act and the California Cartwright Act, and for an injunction permanently barring Compass from suing CRMLS alleging that the rules violate federal or state antitrust laws.

A closer look at the complaint: "This case concerns the efforts of Compass — the largest real estate brokerage in the United States — to bully the real estate industry into abandoning rules designed to promote transparency, broad consumer access, and fair competition among brokerages," the complaint says.

"At issue are rules that serve a straightforward purpose: if a seller authorizes their agent to seek buyers from outside the brokerage, all brokerages participating in the multiple listing service ("MLS") cooperative — not just one — should have the opportunity to connect their buyer clients with that property. 

"Compass, however, seeks to dismantle these rules so that it can pursue its stated corporate strategy of controlling for-sale property inventory as a competitive weapon — publicly marketing properties to attract buyers while withholding those same properties from the MLS cooperative whose data Compass uses to service its own clients. 

"In short, Compass wants to free-ride on the comprehensive listing contributions of thousands of cooperating brokerages while hoarding its own inventory for its exclusive financial benefit."

What Compass is seeking: The filing is a response to a Sept. 8 letter, included in the complaint, from Compass to CRMLS demanding CRMLS confirm by 5 p.m. ET on Oct. 6 that it would not fine or punish a subscriber for publicly marketing office exclusives — "[t]o avoid being named as a defendant in a federal antitrust lawsuit." 

According to the complaint, Compass CEO Robert Reffkin made the same threat — with the same deadline — against MLSs generally in "a packed room of over 900 attendees" at a recent Council of Multiple Listing Services (CMLS) conference in Florida.

Compass' response to the lawsuit: An email sent to Real Estate News by a Compass spokesperson in the early morning hours of Oct. 6 pointed to a recent social post by Compass International Holdings Chairman and CEO Robert Reffkin describing plans to sue CRMLS and reiterated the company's stand on the broader issue:

"Homeowners should be able to publicly market any listing — including office exclusive listings — without their agent facing thousands of dollars in fines. Currently, MLSs supporting more than 350,000 real estate agents across 12 states allow sellers to publicly market any listing, and we believe all MLSs should follow their lead, giving homeowners more flexibility in how they market their homes and bringing more inventory to buyers."

What CRMLS' rules say: CRMLS' Rule 7.9 requires a listing broker to submit a property to the MLS within one business day of any public marketing, if the property is under an exclusive listing agreement. This is CRMLS' version of the National Association of Realtors' controversial Clear Cooperation Policy. 

CRMLS' Rule 7.9.1, the "No Cooperation Listing," lets a broker keep a listing entirely inside one brokerage with no MLS submission, as long as it is not publicly marketed. What CRMLS does not allow is for a listing to remain off of the MLS if it is marketed elsewhere other than within the listing brokerage — unless it is under a non-exclusive agreement. 

According to the complaint, an exclusive listing agreement guarantees a seller's agent will be paid even if they fail to procure a buyer, and a seller's agent is therefore incentivized to submit a property to the MLS. Under a non-exclusive agreement, the seller's agent is only paid if the agent procures a buyer.

"The existence of both the non-exclusive agreement and No Cooperation Listing options are critical features of the Cooperation Rules," the complaint says. "These options ensure that the Cooperation Rules do not compel any seller to list on the MLS. 

"Rather, the Cooperation Rules require that if a seller and broker have an agreement that restrains buyer agents from accessing the seller while choosing to publicly market a property — reaching beyond the brokerage's own agents to the general public — the listing must also be shared on CRMLS so that all participants and their buyer clients can benefit from that information and opportunity."

Of the more than 271,000 listings submitted to CRMLS last year, 89 fines for Rule 7.9 violations were issued, eight of which went to a Compass agent, according to the complaint. Since this spring, however, "CRMLS has noticed a significant increase in reports against Compass," the filing added: "To date in 2026, CRMLS has processed approximately 300 cases related to violations of Rule 7.9, with about 75 of those involving a Compass for-sale property."

Concerns about another avenue for litigation: The complaint condemns Compass' alleged "ceaseless campaign to limit access to residential real estate listings and to force both consumers and brokers to use a Compass-affiliated agent simply to gain access to information about a for-sale property" and stresses the MLS's worries that acquiescing to Compass will result in litigation from another front: homebuyers or their agents.

"CRMLS is concerned that submitting to the Compass demands to hide for-sale properties from the MLS and the marketplace, while the seller is prevented from interacting with any competing buyer agents because of the restraints of the exclusive commission agreement, will cause buyers, or buyer agents to bring creditable antitrust claims against CRMLS," the complaint says.