Two New York City renters have filed a class action lawsuit alleging that Compass, a major real estate brokerage, has deliberately withheld thousands of rental listings from public platforms like Zillow, creating a fabricated supply shortage that artificially raises rents across Manhattan. The complaint claims Compass controls over 80 percent of Manhattan rental listings, giving it monopoly power to dictate pricing.
The lawsuit, filed this week in federal court, accuses Compass of engaging in anticompetitive behavior by buying up smaller brokerages over the past decade and then refusing to post available units on free digital platforms. Plaintiffs Peter Castaneda and Haley Gelfand argue that by reducing the visible supply of rentals on sites like Zillow, Compass has effectively manufactured a supply shock that forces renters to pay higher prices or rely solely on the firm’s own listing services.
According to the complaint, Compass now commands an estimated 80 percent market share of Manhattan rental listings based on 2025 data. The plaintiffs contend that with such dominance, Compass can “literally dictate pricing for as much as 80 percent of Manhattan’s rental units.” The brokerage has been engaged in a well-documented legal feud with Zillow, leading to a boycott of the platform that began earlier in 2026.
The lawsuit seeks class-action status on behalf of all Manhattan renters affected by the alleged scheme, aiming for damages and an injunction to force Compass to list properties on all platforms. Compass has not yet publicly responded to the specific allegations, but has previously defended its business practices as standard industry strategy focused on exclusivity and client service.
Legal experts note that the case hinges on whether Compass’s market share truly constitutes a monopoly under antitrust law, and whether withholding listings from one platform equates to illegal price manipulation. The outcome could have lasting implications for how real estate data is shared and how renters access information in the digital age.
Analysis
Why This Matters
- For renters: If the lawsuit is successful, it could increase transparency in the rental market, potentially lowering rents by making more supply visible to consumers.
- For the real estate industry: The case challenges the practice of brokers controlling access to listing data, which could reshape how platforms like Zillow operate and the business models of large brokerages.
- Broader significance: This is a test of antitrust enforcement in the digital age, specifically concerning data control and platform boycotts. A ruling for plaintiffs could encourage more competition cases against companies that control access to market information.
Background
The real estate listing market has long been dominated by local Multiple Listing Services (MLS), but the rise of digital platforms like Zillow disrupted traditional models. Brokerages began competing for exclusive listings as a way to attract clients, leading to a fragmented landscape. Compass, founded in 2012, expanded rapidly through acquisitions, becoming one of the largest brokerages in the U.S.
In May 2026, Compass removed thousands of its listings from Zillow after a bitter dispute over fees and data control, effectively boycotting the platform. This move reduced the visible rental inventory on Zillow in New York City, which plaintiffs argue triggered a false sense of scarcity. Similar strategies have been used by other firms in the past, but this is the first major lawsuit alleging that such boycotts constitute illegal monopolization.
Key Perspectives
[Plaintiffs/Haley Gelfand and Peter Castaneda]: They argue that Compass’s dominant market share and deliberate withdrawal of listings from Zillow constitute anticompetitive behavior that artificially inflates rents, harming all Manhattan renters. They seek class-action status to force transparency and compensation.
[Compass]: The brokerage has not yet responded to the specific lawsuit, but has previously defended its practices as standard business strategy focused on providing exclusive listings to clients who use its services. They may argue that their market share is not a monopoly and that platform boycotts are legal competitive moves.
[Critics and Antitrust Experts]: Skeptics point out that proving a monopoly requires showing Compass has the power to control prices or exclude competition, which may be difficult given the presence of other listing platforms and brokerages in Manhattan. They also note that renters have alternative ways to find apartments, such as through other brokerages or direct landlord listings.
What to Watch
- Court rulings on class certification: A decision to certify the class could pressure Compass to settle or face large-scale damages.
- Compass’s response: The company’s formal reply in court will reveal its legal strategy and potential defenses, possibly including disputes over market share data.
- Impact on Zillow and other platforms: The case could influence how platforms negotiate with listing providers and whether similar boycotts become more regulated.
- Regulatory interest: The Federal Trade Commission or state attorneys general may take notice, potentially launching their own investigations into the rental market.