Enter any Hawaii address to see its FEMA flood zone, whether flood insurance is required with a federally backed mortgage, and whether the map panel was revised in Oahu’s June 10, 2026 remap. You’ll also see tsunami evacuation zone, projected coastal flooding with sea level rise, and lava or wildfire exposure where it applies.
Works for any address on Oahu, Maui, Molokai, Lanai, Kauai and the Big Island.
Why flood zones matter when you buy in Hawaii
A property in a high-risk zone (A, AE, AO, AH, V or VE) needs flood insurance for any federally backed loan, and floodplain rules apply to new construction and major remodels. That cost belongs in your numbers before you write an offer, not after closing.
On Oahu, updated FEMA flood maps took effect June 10, 2026. More than 3,500 parcels changed designation, with Laie, Kaneohe, Waianae and East Honolulu among the most affected. If you have flood zone information from before that date, check it again here or on Resilient Oahu’s map.