The US housing market is belatedly acknowledging flood risk, with research by Jesse Gourevitch of the Environmental Defense Fund indicating that homes in US flood zones are overvalued by as much as $237 billion. This overvaluation stems from inadequate information, as FEMA's flood maps, used for the National Flood Insurance Program, are outdated, lack coverage in some areas, are not forward-looking, and do not account for climate change or pluvial flood risk.
FEMA's subsidized rates have been insufficient to cover rising flood claims, leading to a $20.5 billion debt to the US Treasury, even after Congress canceled $16 billion in debt in 2017. FEMA is transitioning to a risk-based pricing system, which the US Government Accountability Office projects will require median annual premiums to double from $689 in 2022 to $1,288 to cover the full risk, raising concerns about affordability. This doubling of rates is expected in 800 out of 3,000 counties, although it will be phased in, with 95% of policies reaching full risk premiums only by 2037. FEMA estimates 96% of policyholders will see increases of no more than $20 per month or even decreases, with increases capped at 18% annually.
Beyond insurance, climate impacts are creating broader economic challenges. Extreme heat is reducing business productivity, with recent heat waves causing an estimated 0.6 percentage point loss in US gross domestic product, according to Allianz. Climate-related food price increases are also reigniting debates among central banks about monetary policy responses. The increasing frequency and severity of weather disasters, like Hurricane Helene's $59.6 billion estimated cost for repairs in North Carolina, are becoming a larger contributor to GDP growth, creating what some describe as a "trillion-dollar industry" in recovery efforts. These accumulating climate shocks are difficult for economies to absorb, posing a dangerous cycle for investors and businesses as they can lead to higher interest rates and lower private investment.
