Light Trespass: Castro Valley vs Hayward
How do light trespass rules compare between Castro Valley, CA and Hayward, CA?
Castro Valley and Hayward have similar restriction levels.
Castro Valley, CA
Alameda County
Alameda County treats light trespass onto neighbors as nuisance under Title 17 and Civil Code 3479. Residential fixtures cannot exceed 0.5 foot-candles at adjacent property lines.
View full Castro Valley rules →Hayward, CA
Alameda County
Hayward prohibits outdoor lighting that spills onto adjacent properties above 0.5 foot-candles at the residential property line. Violations are enforced through Code Enforcement as a zoning nuisance.
View full Hayward rules →Key Facts Comparison
| Fact | Castro Valley | Hayward |
|---|---|---|
| Residential limit | 0.5 foot-candles at line | - |
| Commercial limit | 1.0 foot-candle typical | - |
| Nuisance law | Civil Code 3479 | - |
| Required | Shielded, downward-directed | - |
| Motion sensors | 5-10 minute timers OK | Recommended |
| Max spillover | - | 0.5 fc residential line |
| Enforcement | - | Code Enforcement complaints |
| Shielding | - | Required if spilling |
| Fines | - | Administrative citations possible |
Highlighted rows indicate differences between cities.
Castro Valley FAQ
My neighbor's security light shines into my bedroom. What can I do?
Ask politely first, then file a code enforcement complaint with Alameda County or your city. Document with photos showing intrusion. Private nuisance suits are also available under Civil Code 3479.
Can I use bright LED security flood lights?
Yes, but they must be shielded to direct light onto your property only and not exceed 0.5 foot-candles at neighbor property lines. Motion-activated fixtures are preferred over always-on lighting.
Hayward FAQ
What can I do about my neighbors floodlight?
First ask politely for shielding or reaiming; if unresolved, file a complaint with Hayward Code Enforcement.
How is 0.5 foot-candles measured?
With a light meter at ground level at the property line; Code Enforcement has instruments for verification.
Compare other topics
See how Castro Valley and Hayward compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool