Coastal Development: Mililani Mauka vs Urban Honolulu
How do coastal development rules compare between Mililani Mauka, HI and Urban Honolulu, HI?
Mililani Mauka has fewer restrictions than Urban Honolulu.
Mililani Mauka, HI
Honolulu County
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 →Urban Honolulu, HI
Honolulu County
Urban Honolulu's coastal zones, including Waikiki, Kakaako makai, and Ala Moana Beach Park frontage, fall within the Special Management Area, where ROH Chapter 25 requires SMA major or minor permits for most development.
View full Urban Honolulu rules →Key Facts Comparison
| Fact | Mililani Mauka | Urban Honolulu |
|---|---|---|
| - | - | |
| Authority | - | ROH Chapter 25 |
| State basis | - | HRS Chapter 205A |
| Major permit | - | Sec. 25-5.3 |
| Minor permit | - | Sec. 25-5.2 |
| Urban focus | - | Waikiki, Ala Moana, Kakaako makai |
Highlighted rows indicate differences between cities.
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.
Urban Honolulu FAQ
Does a Waikiki hotel renovation need an SMA permit?
Usually yes. Waikiki is entirely within the SMA, so most exterior and valuation-triggered work needs at least an SMA minor permit under Sec. 25-5.2 and often a major permit.
How does HCDA review interact with SMA permits in Kakaako makai?
HCDA handles Kakaako development plan approvals, while SMA permits under Chapter 25 apply separately for projects within the SMA boundary, requiring both approvals in many cases.
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