Miami Realtors + RWorld has merged with Martin County Realtors of the Treasure Coast, expanding its membership to roughly 94,000 across five Florida counties. The deal creates a 120-mile real estate corridor from Miami-Dade to St. Lucie and cements the organization’s rank as the nation’s third-largest multiple listing service.
One MLS for a 120-mile market
The combined association now covers Miami-Dade, Broward, Palm Beach, Martin, and St. Lucie counties. A unified dataset gives agents and brokers the most complete picture of South Florida’s housing inventory.
Teresa King Kinney, co-CEO of Miami Realtors + RWorld, said the merger unites the region. “From Miami-Dade to St. Lucie, we are one,” she stated. “We are honored to welcome Martin County Realtors of the Treasure Coast and their leadership, professionals, and programs.”
The merger follows a similar deal in April, when Miami Realtors absorbed Broward, Palm Beaches & St. Lucie Realtors (RWorld). That transaction set the stage for the latest expansion, which leaders call the final piece in unifying the Treasure Coast marketplace.
Century-old association joins regional powerhouse
Martin County Realtors of the Treasure Coast, founded in 1926, brings nearly a century of local service to the new entity. Its weekly Market Watch program and other initiatives will now be available to all members.
Janet O’Brien, CEO of Martin County Realtors, said members supported the move. “Our members have spoken with overwhelming support for a future built on greater opportunity,” she said. “This merger honors our proud legacy while providing expanded resources, enhanced services, and a stronger regional presence.”
The combined group serves nearly 7 million residents through 15 offices. Members gain access to two MLS platforms—Flexmls and Matrix—along with free IDX feeds from MIAMI MLS and BeachesMLS. Over 2,800 educational programs, 300 vendor partnerships, and 11 data-sharing agreements are now part of the package.
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Dionna Hall will become the organization’s sole CEO in 2027. She described the merger as a step toward building the strongest possible organization, citing stronger advocacy and innovation as key benefits.
The deal includes free Supra electronic-key access for members, removing one of the smaller but persistent costs for agents. With 93,600 Realtors under one roof, the association’s influence in Tallahassee and Washington is expected to grow.
Whether the consolidation will lower fees for individual agents remains unclear. The association hasn’t released a new fee schedule, and past mergers have sometimes raised costs temporarily during system integration.
This expansion began less than three months ago. In that time, the group has nearly doubled its footprint, absorbing two of the region’s largest associations in quick succession. Some smaller brokerages are still adjusting to the new technology and compliance requirements.
Agents now face a single set of rules across the corridor.
The shift may also simplify renter background checks for landlords operating in multiple counties.
