Newfield market snapshot (as of June 13, 2026): the median sale price is about $705K ($267 per sq ft), with homes averaging 59 days on market and 5.4 months of supply, a balanced market. Based on 49 recent closings in live BeachesMLS data.
Newfield is a master-planned new town in Palm City, Martin County, ZIP 34990, developed by Mattamy Homes on a roughly 3,400-acre property. About 70 percent of the land is protected as pasture, wetlands, forests, and lakes, with the balance built as walkable neighborhoods.
Conceived over several years by financial journalist Knight Kiplinger, Newfield uses a Traditional Neighborhood Design that emphasizes walkable streets, a planned town center with retail and dining, and about ten miles of KC Trails for hiking, biking, and horseback riding, including a roughly 450-acre Kiplinger Conservancy and a planned gopher tortoise preserve. At full build it is planned for about 4,000 homes.
Mattamy broke ground on the first residential neighborhood, Rosette Park, in August 2024, and additional neighborhoods are rolling out. Because this is early-phase new construction, the floor plan, the neighborhood pod, and the carrying costs, including any community development district assessment, are what to verify before you commit.