Light Trespass: Honolulu vs Waipahu
How do light trespass rules compare between Honolulu, HI and Waipahu, HI?
Honolulu and Waipahu have similar restriction levels.
Honolulu, HI
Honolulu County
Honolulu County addresses light trespass through LUO 21-4.100 shielding and full cut-off requirements rather than a standalone foot-candle standard, with public nuisance law under ROH Chapter 41 available as backup enforcement.
View full 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 | Honolulu | Waipahu |
|---|---|---|
| Primary tool | LUO 21-4.100 shielding | - |
| Foot-candle limits | None specified | - |
| Backup | ROH Ch. 41 nuisance | - |
| Districts protected | Residential, resort, country | - |
| Rooftop rule | Beyond-edge shielding | - |
| Code section | - | ROH 21-4.100 |
| Method | - | Full cut-off shielding |
| Foot-candle limit | - | None set |
| Nuisance backstop | - | ROH Ch. 41 |
| Protected zones | - | Residential, country |
Highlighted rows indicate differences between cities.
Honolulu FAQ
Can I complain about a neighbor's floodlight?
Yes. If the source is a commercial, industrial, or recreational development, LUO 21-4.100 applies. Residential cases may proceed as public nuisance under ROH Chapter 41.
Is there a property-line brightness limit?
No specific foot-candle cap appears in the ROH. Compliance is measured by whether fixtures are full cut-off and properly shielded toward protected districts.
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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