Dark Sky Rules: Oxnard vs Simi Valley
How do dark sky rules rules compare between Oxnard, CA and Simi Valley, CA?
Oxnard and Simi Valley have similar restriction levels.
Oxnard, CA
Ventura County
Oxnard regulates outdoor lighting to reduce light pollution and glare. New development must use shielded, downward-directed fixtures. Ventura County has broader dark sky awareness given proximity to Channel Islands and astronomical observing sites.
View full Oxnard 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 | Oxnard | Simi Valley |
|---|---|---|
| New Development | Shielded, downward-directed required | - |
| Property Line | Max 0.5 foot-candles residential | - |
| Title 24 | Energy efficiency standards apply | - |
| Coastal | Additional marine wildlife concerns | - |
| 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.
Oxnard FAQ
Does Oxnard have dark sky lighting rules?
Oxnard requires shielded, downward-directed outdoor lighting for new development. While not a designated International Dark Sky community, the city regulates light trespass and glare.
Can my neighbor's lights be too bright in Oxnard?
Yes. Outdoor lighting that causes glare or excessive illumination on neighboring properties may be cited as a nuisance. Contact Code Enforcement at (805) 385-7858 to report issues.
What lighting is required for Oxnard parking lots?
Commercial parking lots must comply with California Title 24 lighting standards including efficiency requirements, maximum illumination levels, and light trespass limits at property boundaries.
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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