Dark Sky Rules: East Honolulu vs Mililani Mauka
How do dark sky rules rules compare between East Honolulu, HI and Mililani Mauka, HI?
East Honolulu has fewer restrictions than Mililani Mauka.
East Honolulu, HI
Honolulu County
East Honolulu commercial, industrial, and recreational development must use full cut-off shielded fixtures under ROH 21-4.100, protecting Hawaii Kai and Aina Haina residential skies and Koko Head observations.
View full East Honolulu rules →Mililani Mauka, HI
Honolulu County
Mililani Mauka's commercial and recreational lighting must use full cut-off shielded fixtures to protect residential zones and preserve Central Oahu's darker skies.
View full Mililani Mauka rules →Key Facts Comparison
| Fact | East Honolulu | Mililani Mauka |
|---|---|---|
| Code section | ROH 21-4.100 | - |
| Fixture type | Full cut-off shielded | - |
| Applies to | Commercial/industrial | - |
| State companion | HRS 201-8.5 | - |
| Rooftop rule | Shield beyond rooftop | - |
| - | - |
Highlighted rows indicate differences between cities.
East Honolulu FAQ
Do residential homes in Aina Haina need full cut-off lighting?
LUO 21-4.100 targets commercial, industrial, and recreational development. Single-family residential fixtures are not directly regulated, but light trespass rules still apply.
Are rooftop bars in Hawaii Kai regulated?
Yes. Non-enclosed rooftop gathering spaces must shield lighting to eliminate illumination beyond the rooftop, protecting neighboring residential views.
What is a full cut-off fixture?
A fixture designed so no light is emitted above horizontal, directing all output downward. This is the standard required by ROH 21-4.100.
Mililani Mauka FAQ
Do MMA rec center lights meet the rule?
Outdoor recreational fixtures fall under the ordinance and must use shielded fixtures that eliminate direct spill.
Are residential porch lights regulated too?
The ordinance primarily targets commercial and recreational installations. Residential spillover is handled via nuisance.
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