Louisiana Flood of 2016 seen costing up to $15 billion, mostly uninsured

The flooding that damaged as many as 110,000 homes and more than 100,000 vehicles in Louisiana last month cost $10 billion to $15 billion, with most of the sum uninsured, according to a risk modeler.

Private residential policies don’t protect against flooding in the U.S., and at least 80 percent of the damaged homes lacked coverage through a government program, according to a report Friday from Impact Forecasting, an arm of insurance broker Aon.