MLSs sue Compass in proactive move to defend cooperation rules

Originally reported by HousingWire · Thu, October 22, 2026

The MLS Daily News summary

HousingWire's report on the joint suit by ARMLS, Bridge, Canopy, REcolorado, Hive and Doorify. Rather than wait to be sued, the MLSs are asking a court for an injunction and a ruling that their cooperation rules — and the limits they place on office exclusives — do not violate antitrust law.

Read the full story at HousingWire ↗

This summary is based on HousingWire's reporting, which MLS Daily News has not independently verified. It may have been prepared with the help of automated tools. Any allegations described are claims made by the parties or reported by the source, not findings of fact. The headline and full article belong to HousingWire. Spot an error? See our corrections policy. Publishers: request removal.

Compass vs. the MLSs Clear Cooperation & Private Listings ARMLS

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Oct 27

Lawsuits & Legal

OneKey joins CRMLS as plaintiff in lawsuit against Compass

OneKey MLS becomes the eighth MLS to ask a court to shield it from Compass's threatened antitrust claims, joining the case California Regional MLS filed earlier this month. The New York MLS says the brokerage's threats go back as far as March.

Source: Real Estate News ↗

Oct 27

Lawsuits & Legal

OneKey Joins CRMLS’s Lawsuit Against Compass, Citing Months of Emailed Litigation Threats From CEO

New York's OneKey MLS signed on as a co-plaintiff in CRMLS's federal case against Compass, and the two MLSs filed an amended complaint in Manhattan federal court asking a judge to declare their clear cooperation rules lawful. OneKey points to months of emailed litigation threats from Compass leadership as the reason it joined.

Source: RISMedia ↗

Oct 26

MLS Policy

The New State of MLS: Rethinking Rules, Data and Broker Needs

A panel of MLS and industry leaders, including Michael Wurzer, discusses how the MLS's role is shifting amid the multi-MLS lawsuit against Compass and the brokerage's wider campaign against cooperation rules. Topics include rule design, data control and what brokers now need from their MLS.

Source: RISMedia ↗

Oct 26

Lawsuits & Legal

CRMLS leaders pick apart Compass lawsuit

California Regional MLS's CEO and general counsel responded publicly to the antitrust suit Compass filed against the MLS. According to the report, they argued that Compass's complaint itself raises questions about whether some of its agents are following NAR rules and California law.

Source: Real Estate News ↗

Oct 23

Lawsuits & Legal

How Compass' fight with MLSs became a coordinated legal battle

An Inman report traces how Compass's demand letters to individual MLSs developed into multiple court cases. According to the report, at least nine MLSs, with roughly 272,000 combined subscribers and users, have rejected the brokerage's demands or gone to court; the central question is whether a brokerage can publicly market homes while keeping them out of the MLS.

Source: Inman ↗

Oct 23

Lawsuits & Legal

CMLS forming $1M-plus legal action fund after Compass threats

The Council of Multiple Listing Services is setting up a legal action fund topping $1 million. The trade group says the money will support legal matters with significance for the wider MLS industry as lawsuits multiply.

Source: Real Estate News ↗

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