A federal judge in Washington has denied Zillow’s request to reconsider an earlier ruling in a proposed antitrust class action, allowing key claims to continue against the real-estate platform. The suit alleges Zillow leveraged its position in online home search to pressure affiliated agents to steer homebuyers toward Zillow’s mortgage offerings, tying platform access and agent relationships to mortgage-referral practices.

The case, Dupuis et al v. Zillow Group Inc et al, sits at the intersection of platform competition, referral economics, and consumer choice in residential real estate.