Dark Sky Rules: Ojai vs Simi Valley
How do dark sky rules rules compare between Ojai, CA and Simi Valley, CA?
Simi Valley has fewer restrictions than Ojai.
Ojai, CA
Ventura County
Ojai has a strong dark sky ordinance regulating outdoor lighting to preserve the night sky and the valley's rural character. All exterior fixtures must be fully shielded (full cutoff). Maximum color temperature is 3000K (warm white). Mercury vapor and unshielded floodlights are prohibited.
View full Ojai rules →Simi Valley, CA
Ventura County
Simi Valley regulates outdoor lighting to minimize light pollution and glare affecting neighboring properties. The city's Development Code includes standards for shielding, intensity, and direction of exterior lighting on residential and commercial properties.
View full Simi Valley rules →Key Facts Comparison
| Fact | Ojai | Simi Valley |
|---|---|---|
| Fixtures | Fully shielded (full cutoff) required | - |
| Color Temperature | 3000K maximum (warm white) | - |
| Prohibited | Mercury vapor, unshielded floods | - |
| Security Lights | Motion sensor, 60W max equivalent | - |
| Upgrade Trigger | Property sale or remodel | - |
| Shielding | - | Required on all exterior lighting |
| Property Line Limit | - | 0.5 foot-candles residential |
| Direction | - | Downward, no trespass |
| Code Enforcement | - | (805) 583-6238 |
Highlighted rows indicate differences between cities.
Ojai FAQ
What kind of outdoor lights can I use in Ojai?
Only fully shielded fixtures that direct light downward. Maximum 3000K color temperature (warm white). No mercury vapor or unshielded floodlights.
Why does Ojai have dark sky rules?
The city values its rural character and night sky visibility. The ordinance supports the arts community, tourism (stargazing), and wildlife by minimizing light pollution in the valley.
Do I have to replace my existing lights?
Non-conforming fixtures must be upgraded at the time of property sale or substantial remodel. Voluntary compliance is encouraged.
Simi Valley FAQ
Are there limits on outdoor lighting in Simi Valley?
Yes, exterior lighting must be shielded and directed downward. Light may not trespass onto neighboring properties above 0.5 foot-candles at the property line.
Can my neighbor's security light shine into my yard?
No, security lights must be shielded and directed to avoid illuminating neighboring properties. File a complaint with Code Enforcement at (805) 583-6238 if lights trespass.
What type of outdoor lights are recommended?
Full cutoff, downward-directed fixtures are recommended. LED and warm-color temperature lights minimize glare and sky glow. Avoid unshielded flood lights and mercury vapor fixtures.
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