A recent study has revealed that nearly three dozen high-rise buildings along a stretch of South Florida’s coastline are sinking or settling, raising concerns about structural integrity and long-term safety. Conducted by the University of Miami Rosenstiel School of Marine, Atmospheric, and Earth Science, the research highlights that these changes are occurring at a faster rate than expected, affecting both luxury condos and hotels.
Key Findings
- Scope of the Issue: The study surveyed 35 buildings across a 12-mile stretch from Miami Beach to Sunny Isles Beach, showing subsidence rates between 0.8 and 3.1 inches (2 to 8 cm).
- Younger Buildings at Risk: Around half of the affected structures are less than a decade old, challenging assumptions that subsidence primarily affects older buildings.
- Contributing Factors:
- South Florida’s unique limestone and sand foundation can shift under the weight of high-rises.
- Vibrations from construction and tidal flows, even from projects over 1,000 feet away, contribute to this settling.
A Call for Vigilance
“The discovery of the extent of subsidence hotspots along the South Florida coastline was unexpected,” said Farzaneh Aziz Zanjani, lead author of the study. “The study underscores the need for ongoing monitoring and a deeper understanding of the long-term implications for these structures.”
While some settling is natural during and shortly after construction, the researchers found it surprising that significant changes are still occurring years later. Sunny Isles Beach showed the most noticeable shifts, but preliminary data suggests the issue may extend further north into Broward and Palm Beach counties.
What’s Next for Coastal Development?
The findings come as South Florida grapples with the combined challenges of rapid development, rising sea levels, and climate change. Experts emphasize the need for enhanced monitoring systems, stricter construction regulations, and regular assessments of vulnerable structures to ensure public safety and resilience.
Local officials, property owners, and developers are urged to take proactive measures, including consulting structural engineers and reviewing building codes. These steps are crucial to mitigate risks in one of the nation’s most desirable—but precarious—coastal real estate markets.
For residents and investors, the report is a reminder to stay informed and prioritize safety when choosing high-rise properties in South Florida’s dynamic environment.