Mililani Town vs Waipahu
How do dark sky rules rules compare between Mililani Town, HI and Waipahu, HI?
Waipahu has fewer restrictions than Mililani Town.
Mililani Town, HI
Honolulu County
Mililani Town's commercial lighting must use full cut-off shielded fixtures to prevent spillover into residential zones and preserve night skies under county and state policy.
View full Mililani Town 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 | Mililani Town | Waipahu |
|---|---|---|
| - | - | |
| 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.
Mililani Town FAQ
Does Mililani Tech Park lighting meet the rule?
New or replacement fixtures must comply. Legacy fixtures may be subject to retrofit orders on complaint.
Are HOA park lights covered?
Outdoor recreational facilities fall under the provision and must use shielded fixtures.
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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