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🌍 Environmental Rules/Coastal Development

Kailua vs Mililani Town

How do coastal development rules compare between Kailua, HI and Mililani Town, HI?

Mililani Town has fewer restrictions than Kailua.

Kailua, HI

Honolulu County

Heavy Restrictions

Kailua properties within the Special Management Area along Kailua and Lanikai beaches require SMA permits under ROH Chapter 25 before most development or significant improvements proceed.

View full Kailua rules β†’

Mililani Town, HI

Honolulu County

Few Restrictions

Mililani Town sits inland and is generally outside Honolulu's Special Management Area under ROH Chapter 25, so most projects do not need SMA permits.

View full Mililani Town rules β†’

Key Facts Comparison

FactKailuaMililani Town
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Highlighted rows indicate differences between cities.

Kailua FAQ

Is my Kailua home in the SMA?

Properties within a set distance of the shoreline are likely inside the SMA; check the city's SMA map or contact DPP to confirm.

Do repairs need an SMA permit?

Ordinary maintenance is usually exempt, but structural additions or changes to footprint typically require at least a minor SMA permit.

Mililani Town FAQ

Do I ever need an SMA permit in Mililani?

Almost never for standard Mililani Town properties; the SMA boundary does not reach the community.

What if I build on a beach property elsewhere?

Coastal parcels outside Mililani are very likely inside the SMA and would need city and often state approvals.

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