Compass Is Building a "Dark Pool" of Real Estate Listings. The Industry Is Fighting Back.
With 340,000 agents under its control, the newly merged brokerage is pushing private listings—and Zillow is suing to stop them. The outcome will reshape how homes are bought and sold.
The Compass-Anywhere deal closed Friday. The regulatory clock ran out. Robert Reffkin now controls the largest brokerage in history—340,000 agents across Compass, Coldwell Banker, Century 21, Sotheby's, Corcoran, and five other brands.
That's not the story. The story is what Compass does next.
Reffkin has been building what critics call a "dark pool" of real estate inventory. His three-phase marketing strategy starts with "Private Exclusives"—listings shared only among Compass agents before hitting the open MLS. Zillow calls it hoarding. The Consumer Policy Center calls it anti-consumer. A New York courtroom will decide.
Zillow sued in June. Their argument: Compass's private listings fragment the market, harm buyers who don't have Compass agents, and violate the transparency that makes the MLS work. They implemented "Zillow Listings Access Standards" in April—blocking any listing not submitted to the MLS within 24 hours.
Compass's defense: seller choice. If a homeowner wants to test the market quietly before going public, that's their right. Reffkin told agents Friday: "There will be no mandates. Sellers decide when, where, and how to list."
The math has changed with the merger. Before, Compass controlled roughly 5% of U.S. transactions. Now? The combined company handled $10 billion in volume last year. In key markets like New York, LA, and Miami, their share is much higher. If private listings become the norm, that inventory stays behind a "velvet rope."
NextHome CEO James Dwiggins warned: "Private listings will go mainstream, taking the industry back 40 years and away from the system we spent so much time perfecting for consumers."
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