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.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Ewa Gentry, HI
Construction work in Ewa Gentry follows Hawaii Administrative Rules Title 11 Chapter 46, allowing loud equipment only weekdays 7 a.m. to 6 p.m. and Saturdays...
Ewa Gentry, HI
Aircraft noise over Ewa Gentry is preempted by federal FAA rules, with limited state authority under HRS §261-12 for tour-aircraft permits; ROH §41-6 explici...
Ewa Gentry, HI
Ewa Gentry dog owners are subject to ROH §7-2.3, which treats continuous or repeated barking, howling, or whining that disturbs neighbors as a civil animal n...
Ewa Gentry, HI
ROH Sec. 21-4.40 controls retaining walls in Ewa Gentry, limiting fill-containing walls inside required yards to six feet and combining terraced wall heights...
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
Under ROH Sec. 21-4.60, common fence materials in Ewa Gentry such as wrought iron, wire, wood, vinyl, and plastic are allowed when combined with compliant po...
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.
Help us keep this page accurate. If you notice an error or outdated information, let us know.