Overview

• Compass’s June 23 lawsuit in New York federal court alleges Zillow’s 24-hour posting rule constitutes anticompetitive conduct and violates antitrust laws.
• The policy, effective May 28 and enforceable from June 30, derives from the National Association of Realtors’ Clear Cooperation Policy and bars listings marketed elsewhere if not added on Zillow within 24 hours.
• Compass contends the rule disrupts its three-phase marketing strategy—private listings, “Coming Soon” previews and public launch—by compelling all homes onto Zillow’s site.
• Zillow defends the policy as vital for ensuring buyer access to all publicly marketed homes and preventing market fragmentation, calling the suit without merit.
• Redfin and eXp Realty have adopted Zillow’s requirement, though eXp has denied any conspiracy with Zillow.