The mechanism: FEMA's Risk Rating 2.0, fully phased in since April 2023, repriced the National Flood Insurance Program property-by-property using replacement cost, distance to water, and flood frequency instead of the old flat-rate flood-zone maps. The predictable result: premiums rose sharply for the best-built, lowest-risk homes that had been overcharged under the old system, while high-risk repetitive-loss properties stayed underpriced because NFIP is statutorily required to insure anyone in a participating community regardless of construction. That gap — good risks paying more, bad risks still subsidized — is exactly the seam private carriers exploit. Private flood direct premiums grew roughly 43% from 2016 to 2024, and the growth accelerated once Risk Rating 2.0 rolled out, because private underwriters can now decline the slab-on-grade basement rebuild while the NFIP legally cannot.

Who cashes in: