Kailua vs Mililani Town
How do flood zones rules compare between Kailua, HI and Mililani Town, HI?
Mililani Town has fewer restrictions than Kailua.
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 →Mililani Town, HI
Honolulu County
Most of Mililani Town is outside high-risk flood zones, but drainage ways and gulches fall under ROH Chapter 21A elevation and variance standards where they apply.
View full Mililani Town rules →Key Facts Comparison
| Fact | Kailua | Mililani Town |
|---|---|---|
| - | - |
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.
Mililani Town FAQ
How do I find my Mililani flood zone?
Use FEMA's online flood map service or ask Honolulu DPP for a zone determination using your tax map key.
Do I need flood insurance if I am not in a high-risk zone?
It is optional in most Mililani areas, though lenders may still require it for gulch-adjacent parcels.
Compare other topics
See how Kailua and Mililani Town compare on other ordinance categories.
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