Climate-related natural disasters are driving up insurance costs for homeowners in the most-affected regions, according to a Treasury Department report released Thursday.
In a voluminous study covering 2018-22 and including some data beyond that, the department found that there were 84 disasters costing $1 billion or more, excluding floods, and that they caused a combined $609 billion in damages. Floods are not covered under homeowner policies.
During the period, costs for policies across all categories rose 8.7% faster than the rate of inflation. However, the burden went largely to those living in areas most hit by climate-related events.
For consumers living in the 20% of zip codes with the highest expected annual losses, premiums averaged $2,321, or 82% more than those living in the 20% of lowest-risk zip codes.