PolicySource: HousingWire
6 MLSs sue Compass in SDNY to lock in cooperation rules — and bar antitrust suits
Original headline: “MLSs sue Compass in proactive move to defend cooperation rules” — HousingWire, Oct 22, 2026
HousingWire reports that on October 22, Arizona Regional MLS, Bridge MLS, Canopy MLS, REcolorado, Hive MLS and Doorify MLS filed in U.S. District Court for the Southern District of New York seeking declaratory and injunctive relief against Compass International Holdings — the same outcomes CRMLS sought earlier this month in SDNY. The MLSs ask the court to declare their cooperation rules lawful under antitrust law and to permanently bar Compass from bringing federal or state antitrust claims alleging those rules are illegal; they say Compass’s early-September demand letters and Reffkin’s CMLS Open House threats to spend millions suing MLSs that fine agents for publicly marketing office exclusives prompted the suit. HousingWire quotes Canopy Realtors/Canopy MLS CEO AnneMarie DeCatsye telling participants the MLS joined to protect a comprehensive, timely listing database, and a Compass spokesperson reiterating that sellers should publicly market any listing — including office exclusives — without agent fines, claiming MLSs supporting more than 350,000 agents across 12 states already allow that approach.
Our take (opinion & analysis, not reporting)
For US agents: get in writing how your brokerage and MLS handle Coming Soon, Private Exclusive, Limited Exposure and office-exclusive public marketing before you advertise a listing off-MLS — this fight now has CRMLS vs Compass plus a six-MLS coalition in SDNY, after Unlock and OneKey already rejected Compass’s demands. If you work ARMLS, Bridge, Canopy, REcolorado, Hive or Doorify, expect compliance notices and possible temporary uncertainty while courts sort rules vs seller-choice marketing. Treat Compass’s “350,000 agents / 12 states” claim as one side’s framing; ask your broker which cooperation rule actually binds your license in your market.
What people are saying online
Industry analyst Robert Hahn (@robhahn) posted that he read the ARMLS et al. v. Compass complaint and called it \"an excellent example of legal craftsmanship.\"
Agent Brian Anthony Phillips (@TheMobileBroker) framed the stakes for buyers and agents as whether a dream home could be advertised online yet missing from an MLS search, asking if the six-MLS suit is about seller choice or an unfair advantage.
Sources: Robert Hahn (X) · Brian Anthony Phillips (X)