South Flagler House

South Flagler House is one of West Palm Beach's most exclusive ultra-luxury pre-construction projects — a pair of 28-story limestone-clad towers anchoring a four-acre site on South Flagler Drive, developed by Related Ross (Stephen Ross's Related Companies' Florida arm) with architecture by Robert A.M. Stern Architects (the same firm responsible for 220 Central Park South in Manhattan). The project will deliver 108 residences across the twin towers — extraordinarily low-density by South Florida standards, with the largest floor plates reserved for full-floor and penthouse residences. Limestone cladding (rather than the city's typical concrete-and-glass curtain wall) plus classical proportions are deliberate references to the architectural vocabulary of Palm Beach proper across the Intracoastal. Groundbreaking completed in April 2024 with topping-off achieved in November 2025. Estimated completion is 2027. Pricing for remaining residences typically begins in the high $7 million range and ascends well beyond $20M+ for the larger floor plans, with full-floor and penthouse residences trading well above $40M+. South Flagler House targets the buyer who would otherwise purchase on Palm Beach Island but wants newer construction with full-amenity programming — and the project's combination of Stern's classicism + Related Ross's track record + ultra-low unit count makes it one of the most consistently-bid pre-construction trades in the entire Palm Beach market.