Flood Zones: Kaneohe vs Urban Honolulu
How do flood zones rules compare between Kaneohe, HI and Urban Honolulu, HI?
Kaneohe and Urban Honolulu have similar restriction levels.
Kaneohe, HI
Honolulu County
Low-lying Kaneohe neighborhoods fall within FEMA flood zones and must follow ROH Chapter 21A elevation, foundation, and variance standards for any construction.
View full Kaneohe rules →Urban Honolulu, HI
Honolulu County
Urban Honolulu's Mapunapuna, Waikiki fringe, and Kakaako makai properties lie in FEMA special flood hazard areas adopted under ROH Sec. 21A-1.5, with elevation and floodproofing required under Sec. 21A-1.8.
View full Urban Honolulu rules →Key Facts Comparison
| Fact | Kaneohe | Urban Honolulu |
|---|---|---|
| - | - | |
| Authority | - | ROH Chapter 21A |
| Map source | - | FEMA FIRM |
| Elevation rule | - | Sec. 21A-1.8 |
| Variance | - | Sec. 21A-1.12 |
| Urban hot spots | - | Mapunapuna, Waikiki, Kakaako |
Highlighted rows indicate differences between cities.
Kaneohe FAQ
How do I check my Kaneohe flood zone?
Use the FEMA Flood Map Service Center or contact Honolulu DPP with your tax map key to confirm your zone.
Can I add living space below BFE?
No, habitable finished space below the base flood elevation is generally not allowed under Chapter 21A.
Urban Honolulu FAQ
Is Mapunapuna really in a flood zone?
Yes. FEMA FIRMs adopted under Sec. 21A-1.5 place much of Mapunapuna in a special flood hazard area, with chronic tidal flooding driving elevation and floodproofing requirements.
Can a Waikiki tower project get a flood variance?
Only under Sec. 21A-1.12 hardship standards, which are narrowly applied. Urban Honolulu variances are rare, and denials preserve NFIP insurance rating for surrounding structures.
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