Dark Sky Rules: East Honolulu vs Waipahu
How do dark sky rules rules compare between East Honolulu, HI and Waipahu, HI?
East Honolulu and Waipahu have similar restriction levels.
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 →Waipahu, HI
Honolulu County
Waipahu commercial, industrial, and recreational development must use full cut-off shielded fixtures under ROH 21-4.100, protecting dense plantation-era residential blocks from light spill.
View full Waipahu rules →Key Facts Comparison
| Fact | East Honolulu | Waipahu |
|---|---|---|
| Code section | ROH 21-4.100 | ROH 21-4.100 |
| Fixture type | Full cut-off shielded | Full cut-off shielded |
| Applies to | Commercial/industrial | Commercial/industrial |
| State companion | HRS 201-8.5 | HRS 201-8.5 |
| Rooftop rule | Shield beyond rooftop | 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.
Waipahu FAQ
Does the rule cover shopping centers on Farrington Highway?
Yes. Commercial sites along Farrington Highway must install full cut-off shielded fixtures to eliminate light spill onto adjacent residential Waipahu blocks.
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.
Are Waipahu sports field lights regulated?
Yes. Outdoor recreational lighting is covered by LUO 21-4.100 and must use shielded fixtures that eliminate illumination onto neighboring residential properties.
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