FEMA flood zone rules in Ewa Gentry, HI — also called floodplain regulations or special flood hazard area (SFHA) rules — determine flood insurance requirements and elevation standards for new construction.
Ewa Gentry parcels mapped within FEMA special flood hazard areas are regulated by ROH Chapter 21A, which sets elevation and construction standards for floodplain development.
Chapter 21A regulates floodplain development across Honolulu. Key sections include 21A-1.5 adopting FEMA FIRMs for special flood hazard areas, 21A-1.8 establishing flood fringe standards requiring elevation to or above base flood elevation, and 21A-1.12 governing flood variances. LUO Sec. 21-9.10 cross-references developments in flood hazard areas. Because Ewa Gentry sits on the low-lying Ewa Plain with engineered drainage channels, portions of the community can fall within Zones AE, AH, or X-shaded. New construction and substantial improvements in mapped flood zones must meet elevation and flood-proofing requirements.
Building below the base flood elevation or finishing structures without approved flood-proofing can lead to permit revocation, insurance issues, and required retrofits.
Ewa Gentry, HI
ROH Sec. 16-6.2 requires Ewa Gentry residential swimming pools to be fully enclosed by a compliant fence or protective device designed to prevent unsupervise...
Ewa Gentry, HI
Ewa Gentry follows Honolulu's adoption of the IRC via ROH Chapter 16, incorporating IRC R314 for smoke alarms and R315 for CO alarms. Detectors are required ...
Ewa Gentry, HI
Honolulu uses a minimum-stay rule rather than an annual night cap. Under ROH §21-5.730 (Ord. 22-7), every reservation under 30 consecutive days at a resident...
Ewa Gentry, HI
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Ewa Gentry, HI
Ewa Gentry residents may not enter or remain in public parks during posted closure hours under ROH Sec. 10-1.2, though direct traverse of beach parks to reac...
Ewa Gentry, HI
Honolulu has no separate juvenile curfew ordinance, so Ewa Gentry follows HRS Sec. 577-16: children under 16 are prohibited from public places between 10 p.m...
Side-by-side rule comparisons with other cities in Honolulu County.
See how other cities in Honolulu County handle flood zones.
See how Ewa Gentry's flood zones rules stack up against other locations.
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