Flood Zones: East Honolulu vs Waipahu
How do flood zones rules compare between East Honolulu, HI and Waipahu, HI?
East Honolulu and Waipahu have similar restriction levels.
East Honolulu, HI
Honolulu County
Development in East Honolulu's FEMA-mapped flood zones falls under ROH Chapter 21A, which governs special flood hazard areas, flood fringe elevation standards, and flood variance procedures.
View full East Honolulu rules →Waipahu, HI
Honolulu County
Waipahu development in FEMA-mapped flood zones must comply with ROH Chapter 21A, covering special flood hazard areas, elevation standards, and flood variance procedures.
View full Waipahu rules →Key Facts Comparison
| Fact | East Honolulu | Waipahu |
|---|---|---|
| - | - |
Highlighted rows indicate differences between cities.
East Honolulu FAQ
How do I know if my Aina Haina home is in a flood zone?
Check the FEMA Flood Insurance Rate Maps adopted under Sec. 21A-1.5 through the city's GIS or the FEMA map service center to determine your property's flood zone designation.
What elevation must new construction meet?
Under Sec. 21A-1.8, new construction in the flood fringe must be elevated to or above base flood elevation, with specific requirements depending on the flood zone designation.
Waipahu FAQ
Is my Waipahu house in a flood zone?
Review the FEMA Flood Insurance Rate Maps adopted under Sec. 21A-1.5 through city GIS or the FEMA map portal to find your property's specific flood zone designation.
Can I finish my basement in a flood zone?
Finishing below base flood elevation is generally restricted. Enclosures below BFE must meet flood opening and material requirements under Sec. 21A-1.8, so check with permitting first.
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