Pearl City vs Waipahu
How do dark sky rules rules compare between Pearl City, HI and Waipahu, HI?
Pearl City and Waipahu have similar restriction levels.
Pearl City, HI
Honolulu County
Pearl City commercial, industrial, and recreational development must use full cut-off shielded fixtures under ROH 21-4.100, protecting residential neighborhoods and Pearl Harbor security lighting corridors.
View full Pearl City 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 | Pearl City | 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.
Pearl City FAQ
Does the ordinance apply to Pearl City big-box retail?
Yes. Large commercial sites along Kamehameha Highway must install full cut-off shielded fixtures to eliminate light spill onto adjacent residential Pearl City.
Are military installation lights regulated?
JBPHH federal installations follow DoD lighting standards, not ROH 21-4.100. Surrounding private Pearl City development remains subject to the county ordinance.
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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