Marti Realty Group, which has topped $300M in sales volume so far this year, brings 40 agents and staff and its New Home Buddy platform to Keller Williams. A boutique Central Texas brokerage has aligned with Keller Williams Realty as it looks to expand its residential and new construction real estate business across the state and beyond. Chris and Meredith Marti, Marti Realty Group | KW City-ViewAn 'entrepreneurial ecosystem': In addition to residential real estate sales, the former indie brokerage — now affiliated with KW City-View in San Antonio — has created what Keller Williams characterized as an "entrepreneurial ecosystem" consisting of MRG, New Home Buddy and Numouve. With the KW affiliation, the platform plans to expand nationally, the company said. The changes, KW said, are part of its strategy to increase agent count and franchise productivity in support of the franchisor's broader focus on accelerating growth.