IBC figures show annual insured losses from catastrophic weather averaged $14 billion a decade between 2006 and 2015, nearly tripling to $37 billion between 2016 and 2025, pushing the IBC to lobby for updated building codes, stronger hazard mapping and stormwater systems built for extreme rainfall, echoing the lawsuits’ core allegation: that municipalities failed to invest in adequate stormwater absorption despite known, repeated risk.
