A University of Miami study has revealed that 35 high-rise condominiums and luxury hotels along South Florida’s coastline are experiencing unexpected sinking or settlement, raising new concerns about structural stability in the region’s premier beachfront properties.
The research, published Friday, documented buildings sinking between 0.8 to 3.1 inches along a 12-mile coastal stretch from Miami Beach to Sunny Isles Beach. Lead researcher Farzaneh Aziz Zanjani expressed surprise at the extent of subsidence, particularly since half of the affected structures are less than ten years old.
Scientists attribute the settling to multiple factors, including limestone bedrock interspersed with unstable sand layers, tidal influences, and nearby construction activities affecting foundations up to 1,050 feet away. Sunny Isles Beach properties showed the most noticeable changes, with preliminary data suggesting similar patterns extending northward into Broward and Palm Beach counties.
While unrelated to the 2021 Champlain Towers South collapse in Surfside, the findings underscore growing concerns about coastal building stability in corrosive environments. Researchers plan additional studies to examine whether differential settling rates within individual buildings could lead to structural issues or utility system damage.
The discovery parallels recent findings along the Atlantic Coast, where major cities including New York, Baltimore, and Virginia Beach show concerning subsidence rates exceeding sea-level rise.
