A federal antitrust lawsuit challenging a partnership between Zillow and Redfin is moving toward trial after a judge declined to dismiss the case, extending a closely watched dispute over competition in the online apartment rental advertising market.
According to The Real Deal, which first reported the latest procedural development, the litigation will now proceed after the court rejected efforts by Zillow and Redfin to end the case before trial. The lawsuit was filed by the U.S. Federal Trade Commission (FTC), which contends the companies’ 2025 agreement unlawfully reduced competition in a concentrated segment of the rental listings industry.
The FTC alleges that Zillow paid Redfin $100 million, along with ongoing monthly payments, under an arrangement that led Redfin to exit direct competition for multifamily rental advertising while becoming the exclusive distributor of Zillow’s rental listings. Regulators argue the agreement eliminated an independent competitor and could lead to higher advertising costs for apartment owners and managers while reducing incentives for both companies to improve services for renters. Reuters previously reported those allegations after reviewing the FTC’s complaint.
The companies dispute the government’s claims.
Zillow has maintained that the partnership expands consumer access to rental listings by making Zillow inventory available through Redfin’s platform, describing the agreement as beneficial for renters and property managers. Redfin has similarly argued that the arrangement allowed it to redirect resources toward improving its rental search experience after determining its previous rental advertising business was not financially sustainable. Reuters reported that both companies have said they expect to prevail in court.
The case centers on the competitive effects of digital platform partnerships in real estate advertising, an area that has received heightened antitrust attention from federal regulators in recent years. The FTC, whose mission includes promoting competition and enforcing federal antitrust laws, has increasingly scrutinized agreements that allegedly reduce rivalry without involving traditional mergers.
According to The Real Deal, the court’s latest ruling means the FTC will have an opportunity to present evidence supporting its claims at trial rather than seeing the case resolved at the pleading stage.
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The dispute focuses specifically on the market for advertising multifamily rental properties, where the FTC argues competition among major listing platforms affects advertising prices, innovation, and the quality of services available to both property managers and renters. Regulators allege the Zillow-Redfin agreement removed an important competitive constraint in that market by replacing head-to-head competition with a long-term commercial partnership. Reuters reported that the agency also contends the arrangement diminished incentives to improve platform functionality for apartment seekers.
The litigation comes amid broader federal scrutiny of competitive practices in residential real estate, including enforcement actions involving brokerage rules, property management software, and digital real estate marketplaces. Those efforts reflect an ongoing focus by antitrust authorities on whether market concentration or contractual arrangements may limit competition in housing-related services.
Neither Zillow nor Redfin has conceded any violation of antitrust law. Both companies continue to characterize their partnership as pro-competitive, arguing that it broadens listing distribution, increases visibility for rental properties, and delivers benefits to consumers through expanded access to available apartments.
The case will now proceed through the federal court process, where the FTC will seek to prove that the agreement unlawfully restrained competition. According to The Real Deal, the matter is headed for trial, with the court expected to evaluate evidence regarding the partnership’s competitive effects and determine whether the arrangement violates federal antitrust law.
Source: The Real Deal
