Dark Sky Rules: Brentwood vs Concord
How do dark sky rules rules compare between Brentwood, CA and Concord, CA?
Brentwood and Concord have similar restriction levels.
Brentwood, CA
Contra Costa County
Brentwood's zoning and development standards include outdoor lighting requirements aimed at minimizing light pollution and glare into neighboring properties and the night sky. Fixtures on new development must generally be full-cutoff or shielded, and light trespass onto adjacent residential lots is limited.
View full Brentwood rules →Concord, CA
Contra Costa County
Concord does not have a formal dark-sky ordinance but CMC Title 18 requires exterior lighting to be shielded, downcast, and not spill onto neighboring properties. New development must submit a photometric plan demonstrating zero foot-candle spillover at property lines.
View full Concord rules →Key Facts Comparison
| Fact | Brentwood | Concord |
|---|---|---|
| - | - |
Highlighted rows indicate differences between cities.
Brentwood FAQ
Concord FAQ
Can I install floodlights on my Concord home?
Yes, but they must be aimed downward, shielded, and not cast light onto neighboring properties. Motion-activation is encouraged to minimize dusk-to-dawn operation.
Does Concord regulate LED color temperature?
For new commercial and multifamily projects near residential areas, lighting should not exceed 3000K. Residential light choices are not strictly regulated but shielding rules apply.
What about stadium lights at schools?
Sports and field lighting must comply with curfew requirements (off within 1 hour of event end) and include shielding to minimize spillover to neighboring residential uses.
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