Light Trespass: East Honolulu vs Waipahu
How do light trespass rules compare between East Honolulu, HI and Waipahu, HI?
East Honolulu and Waipahu have similar restriction levels.
East Honolulu, HI
Honolulu County
East Honolulu light trespass is controlled through the shielding and cutoff requirements in ROH 21-4.100, preventing direct illumination onto residential neighborhoods in Hawaii Kai, Aina Haina, and Kuliouou.
View full East Honolulu rules →Waipahu, HI
Honolulu County
Waipahu light trespass is controlled through the shielding and cutoff rules of ROH 21-4.100, critical on dense plantation-era lots where commercial and residential properties share short property lines.
View full Waipahu rules →Key Facts Comparison
| Fact | East Honolulu | Waipahu |
|---|---|---|
| Code section | ROH 21-4.100 | ROH 21-4.100 |
| Method | Full cut-off shielding | Full cut-off shielding |
| Foot-candle limit | None set | None set |
| Nuisance backstop | ROH Ch. 41 | ROH Ch. 41 |
| Protected zones | Residential, country | Residential, country |
Highlighted rows indicate differences between cities.
East Honolulu FAQ
Can I measure light trespass at my Hawaii Kai property line?
Honolulu does not set a foot-candle limit. Enforcement requires proving noncompliant fixtures under LUO 21-4.100, not a numerical illuminance threshold.
What if my neighbor's floodlight shines into my Aina Haina window?
You can file a DPP complaint if the fixture is noncompliant commercial or recreational lighting, or pursue a public nuisance claim under ROH Chapter 41.
Are single-family home floodlights regulated?
LUO 21-4.100 targets commercial and recreational development. Single-family residential fixtures fall under nuisance law rather than the zoning shielding rule.
Waipahu FAQ
Is there a foot-candle limit at Waipahu property lines?
No. Honolulu does not set a numeric limit. Enforcement requires proving noncompliant commercial or recreational fixtures under LUO 21-4.100.
What if a Waipahu business floodlight shines into my bedroom?
File a DPP complaint citing LUO 21-4.100 if the fixture is commercial, industrial, or recreational. Persistent issues may also support an ROH Chapter 41 nuisance claim.
Are residential porch lights regulated?
LUO 21-4.100 targets commercial, industrial, and recreational development. Single-family residential fixtures fall under nuisance law rather than the zoning shielding rule.
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