Coastal Development: East Honolulu vs Mililani Mauka
How do coastal development rules compare between East Honolulu, HI and Mililani Mauka, HI?
Mililani Mauka has fewer restrictions than East Honolulu.
East Honolulu, HI
Honolulu County
Coastal development along East Honolulu's Maunalua Bay shoreline requires Special Management Area permits under ROH Chapter 25, implementing HRS Chapter 205A coastal zone management.
View full East Honolulu rules →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 →Key Facts Comparison
| Fact | East Honolulu | Mililani Mauka |
|---|---|---|
| - | - |
Highlighted rows indicate differences between cities.
East Honolulu FAQ
Do I need an SMA permit to build a seawall in Hawaii Kai?
Yes. Shoreline structures like seawalls trigger SMA review under Chapter 25 and may also require a shoreline setback variance under HRS 205A Part III.
Does SMA apply to interior remodels near the coast?
Interior renovations with no exterior expansion or land disturbance typically fall outside SMA review, but any shoreline-facing work within the SMA should be confirmed with city planning.
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.
Compare other topics
See how East Honolulu and Mililani Mauka compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool