Flood Zones: Kailua vs Kapolei
How do flood zones rules compare between Kailua, HI and Kapolei, HI?
Kailua and Kapolei have similar restriction levels.
Kailua, HI
Honolulu County
Much of low-lying Kailua sits in FEMA-mapped flood zones, and ROH Chapter 21A sets elevation, foundation, and variance standards for development in these areas.
View full Kailua rules →Kapolei, HI
Honolulu County
Kapolei parcels within FEMA special flood hazard areas are regulated by ROH Chapter 21A, which sets elevation, flood-proofing, and variance standards for floodplain development.
View full Kapolei rules →Key Facts Comparison
| Fact | Kailua | Kapolei |
|---|---|---|
| - | - |
Highlighted rows indicate differences between cities.
Kailua FAQ
Do I need flood insurance in Kailua?
Many Kailua properties are in flood zones where federally backed mortgages require flood insurance; check the FEMA map for your parcel.
Can I finish a ground floor below base flood elevation?
Only limited, flood-resistant uses are allowed below base flood elevation; habitable finishes generally are not permitted without a variance.
Kapolei FAQ
Is my Kapolei property in a flood zone?
Check the FEMA FIRM adopted by Sec. 21A-1.5 or request a determination from the Department of Planning and Permitting before starting any project.
Can I build a finished basement in a Kapolei flood zone?
Below-base-flood-elevation occupied space is generally restricted under Chapter 21A's elevation standards for new construction and substantial improvements.
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