The six-bedroom house is located in Rehoboth and sits less than a mile from the shore line, which places it within FEMA's Special Flood Hazard Area - the zone that would be overrun with water during a 100-year flood, CNN reports.
The Mid-Atlantic state has experienced a sea level rise of more than a foot in the past century, but the Intergovernmental Panel on Climate Change (IPCC) warns it will continue to rise over the next century and flowing water will eventually overtake its coastal areas.
Although climate change plays a major role, the land Biden’s home sits on is naturally sinking and puts this region at an even higher risk of rising sea levels - and levels are increasing faster than anywhere else in the world.
Approximately 5.4 percent, or 100 square miles, of Delaware resides in the 100-year floodplain and by 2050, this land mass is predicted to increase to 7.1 percent or 130 square miles due to rising sea levels, according to States at Risk.
But Biden’s neighborhood sits right in the danger zone where sea levels are expected to rise 1.5 feet by 2040 and then five feet by 2120.
The million-dollar vacation home appears to have been to overcome flooding, as the living quarters are 10 feet off ground because they sit above high ceiling garages.
And this seems to be the running design for most newer homes around the neighborhood.
Rehoboth beach is part of Sussex County, which is the third with the newest homes built in the highest-risk area for future flooding out of all US coastal counties.