SCN-D23-004 · Observed 2025-01-16
observedClimate Triage
Qualitative signpost review · no probability assigned
Bounded observation
US Treasury's Federal Insurance Office analyzed more than 246 million homeowners policies from over 330 insurers for 2018-2022 and found insurance increasingly costly and less available, with higher nonrenewal rates in ZIP codes with the highest expected climate-related losses.
Trigger threshold
Observed threshold is a large official policy-level dataset showing availability withdrawal/nonrenewal covarying with modeled climate peril, not isolated anecdotes or only premium inflation.
Counter-indicator
The report excludes flood insurance, ends in 2022 and does not show that credit has withdrawn or that adaptation capital systematically favors high-value assets.
Update criterion
Update when FIO/state regulators extend policy-year coverage and when mortgage denial, property-value or adaptation-allocation data can be joined; downgrade if availability normalizes in high-risk ZIP codes.