Coastal Development: Honolulu vs Mililani Mauka
How do coastal development rules compare between Honolulu, HI and Mililani Mauka, HI?
Mililani Mauka has fewer restrictions than Honolulu.
Honolulu, HI
Honolulu County
Most development within Honolulu's Special Management Area (SMA) along Oahu's shoreline requires a special permit reviewed by DPP under HRS chapter 205A and ROH chapter 25.
View full 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 | Honolulu | Mililani Mauka |
|---|---|---|
| Statute | HRS Chapter 205A | - |
| Local code | ROH Chapter 25 | - |
| Major threshold | Over $500,000 value | - |
| Reviewing agency | Honolulu DPP | - |
| Hearing body | Planning Commission | - |
| - | - |
Highlighted rows indicate differences between cities.
Honolulu FAQ
Do small home repairs near the beach need an SMA permit?
Routine repairs and maintenance under the dollar threshold are usually exempt, but DPP can require a Minor Permit if the work touches dunes, shoreline structures, or vegetation.
How is the SMA boundary set?
DPP maintains official SMA maps for Oahu. The boundary follows mapped lines that approximate the inland edge of the coastal zone and is shown on the city's online GIS viewer.
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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