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🌍 Environmental Rules/Coastal Development

Coastal Development: Kapolei vs Mililani Mauka

How do coastal development rules compare between Kapolei, HI and Mililani Mauka, HI?

Mililani Mauka has fewer restrictions than Kapolei.

Kapolei, HI

Honolulu County

Heavy Restrictions

Kapolei projects near the leeward coast may fall within a Special Management Area regulated by ROH Chapter 25, implementing Hawaii's HRS Chapter 205A coastal zone management program.

View full Kapolei rules β†’

Mililani Mauka, HI

Honolulu County

Few Restrictions

Mililani Mauka sits well inland of the shoreline and is generally outside Special Management Area boundaries, though ROH Chapter 25 still governs any SMA work elsewhere on Oahu.

View full Mililani Mauka rules β†’

Key Facts Comparison

FactKapoleiMililani Mauka
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Highlighted rows indicate differences between cities.

Kapolei FAQ

Is Kapolei itself within the SMA?

Most of the Kapolei urban core is inland of the SMA, but coastal-adjacent parcels and certain corridors may fall within the SMA boundary.

Do I need an SMA permit to rebuild a coastal-area wall?

Possibly. Any development within the SMA meeting Chapter 25's thresholds requires an SMA minor or major permit before work begins.

Mililani Mauka FAQ

Does my Mililani Mauka home need an SMA permit?

Almost certainly not, since the community sits inland well outside SMA boundaries, but always confirm with the Department of Planning and Permitting.

I own a beach lot elsewhere. Does Chapter 25 apply?

Yes. SMA rules apply based on the location of the project, so any coastal-area development on Oahu is governed by ROH Chapter 25.

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