New FEMA flood maps for Oʻahu (effective June 10, 2026)
According to Honolulu DPP, FEMA released updated Flood Insurance Rate Maps (FIRMs) for Oʻahu after a flood risk study that ran from 2019 to 2024. As of June 10, 2026, the updated FIRMs are effective, along with all regulatory and flood insurance requirements. FEMA's 2026 Letters of Final Determination list Hawaiʻi with a FIRM effective date of June 10, 2026. The Flood Insurance Study (FIS 15003CV001D) for the City and County of Honolulu is marked revised June 10, 2026.
Who is affected?
DPP names Lāʻie, Kāneʻohe, Waiʻanae and East Honolulu among the most affected areas. Properties newly inside a Special Flood Hazard Area (Zones A, AE, AEF, AH, AO, V, VE) may have lenders requiring flood insurance and may face new permitting rules. That can include losing Quick Permit eligibility. All structures in the SFHA have to comply with ROH Chapter 21A (Flood Hazard Areas).
Check your property
Sources
- https://www.honolulu.gov/dpp/resources/fema-flood-insurance-rate-maps-information/ — checked Oct 22, 2026 (HST)
- https://www.fema.gov/flood-maps/change-your-flood-zone/letter-final-determination/2026 — checked Oct 22, 2026 (HST)
- https://map1.msc.fema.gov/mipdata/15003CV001D.pdf — checked Oct 22, 2026 (HST)
- https://msc.fema.gov/portal/home — checked Oct 22, 2026 (HST)
- https://fhat.hawaii.gov/ — checked Oct 22, 2026 (HST)