Overview
- Six regional multiple listing services filed a joint federal complaint in the U.S. District Court for the Southern District of New York, which filed Thursday, asking for a declaration that rules requiring publicly marketed homes be shared on MLS databases do not violate antitrust law.
- Compass has already sued California-based CRMLS in federal court and asked a judge to transfer that case to the Central District of California while saying it has not decided whether to sue additional MLSs.
- The MLS plaintiffs say cooperation rules protect a comprehensive, shared database that gives buyers and sellers timely listing information and prevents brokerages from withholding publicly advertised inventory.
- Compass counters that MLS rules act as a brake on innovation and seller choice by letting some brokerages keep listings on private platforms, and the dispute now centers on both antitrust law and procedural fights over venue and declaratory relief.
- Industry groups are mobilizing legal defense funds and coordination, with CMLS and CRMLS raising money to support MLSs, and the litigation could reshape how listings are marketed, how brokers compete, and how easily consumers find homes.