Six Major MLS Organizations Sue Compass to Protect Equal Access to Home Listings

Joint lawsuit filed by Robinson Bradshaw seeks to uphold rules that protect brokers, agents, and consumers.

NEW YORK, Oct. 22, 2026 /PRNewswire/ -- Six major multiple listing services (MLSs) representing more than 120,000 real estate professionals nationwide have filed a joint federal lawsuit against Compass, Inc., seeking to uphold rules that promote fair competition, protect access to housing information, and prevent large brokerages from gaining an unfair advantage by withholding publicly marketed properties from the shared real estate database.

Arizona Regional Multiple Listing Service, bridgeMLS, Canopy MLS, Doorify MLS, Hive MLS, and REcolorado filed the complaint in the U.S. District Court for the Southern District of New York after Compass threatened lawsuits unless the organizations stopped enforcing rules requiring publicly marketed properties to be shared with other MLS participants.

The six organizations are asking the court to declare that their cooperation rules comply with applicable federal and state antitrust laws and to prevent Compass from pursuing legal claims challenging those rules.

The lawsuit follows demand letters sent by Compass in September 2026, threatening litigation unless the MLS organizations agreed to stop penalizing real estate professionals who ignore MLS rules to which they agreed and publicly advertise properties without submitting them to the MLS.

"These organizations are standing up for the thousands of brokers and agents who follow the rules and depend on a fair marketplace to serve their clients," said Greg Skidmore, who co-chairs Robinson Bradshaw's Antitrust and Competition Practice Group and is serving as the lead attorney representing the six MLS organizations. "Our clients believe transparency and broad access to timely and accurate listing information are fundamental to a competitive real estate industry. These rules serve an important purpose for the consumers who buy and sell homes."

Multiple listing services maintain a database of accurate, timely information about real estate listings, giving agents access to a comprehensive inventory of homes regardless of the size of their brokerage. This system helps buyers find properties, gives sellers access to more potential purchasers, and allows real estate professionals to compete based on their expertise, service, and results rather than access to listings.

The cooperation rules adopted independently by each of the MLS organizations generally require that participating brokers submit a listed property to the MLS within one business day of publicly marketing it. The rules help ensure properties advertised for sale are available to other participating brokers and their clients rather than being restricted to a single company's network. MLS organizations also maintain rules and exceptions that accommodate sellers who have privacy concerns or prefer limited marketing.

The MLSs contend that withholding listings can deprive consumers of timely information about property availability, pricing changes, and how long homes have been on the market. Such information helps buyers evaluate properties and sellers make informed pricing decisions.

The complaint argues that the cooperation rules have significant benefits for competition because they require participating brokerages to contribute timely listing information to the shared marketplace rather than benefiting from information provided by competitors while withholding their own publicly marketed properties.

The plaintiffs seek a declaration that their rules comply with Section 1 of the Sherman Act and applicable state antitrust laws. They also request an injunction preventing Compass from bringing or pursuing antitrust claims against the six organizations based on the challenged cooperation rules, along with attorneys' fees and costs.

The six MLS organizations will continue serving participating real estate professionals and enforcing their respective rules while the litigation proceeds.

About the MLS Organizations
Arizona Regional Multiple Listing Service (ARMLS), based in Tempe, Arizona, serves real estate professionals throughout Arizona, including the Phoenix metropolitan area, Sedona/Cottonwood, and Sierra Vista.

bridgeMLS, headquartered in Berkeley, California, serves real estate professionals in Alameda, Contra Costa, and Tuolumne counties.

Canopy MLS, headquartered in Charlotte, North Carolina, serves real estate professionals across parts of North Carolina, South Carolina, Georgia, Tennessee, and Virginia.

Doorify MLS, based in Cary, North Carolina, serves more than 14,000 real estate professionals across 16 counties in North Carolina.

Hive MLS, headquartered in Wilmington, North Carolina, serves real estate professionals across portions of North Carolina, South Carolina, Georgia, Virginia, Tennessee, and Alabama.

REcolorado, based in Greenwood Village, Colorado, serves approximately 25,000 real estate professionals in the Denver metropolitan region.

About Robinson Bradshaw
Robinson Bradshaw is a national corporate law firm headquartered in Charlotte, North Carolina. The firm represents businesses and organizations in complex litigation, antitrust matters, corporate transactions, real estate, and other legal matters. Its attorneys handle significant business disputes in state and federal courts nationwide.

For more information, visit www.robinsonbradshaw.com.

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Jennifer Donahoe
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SOURCE Robinson Bradshaw