Dark Sky Rules: Concord vs Richmond
How do dark sky rules rules compare between Concord, CA and Richmond, CA?
Concord and Richmond have similar restriction levels.
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 →Richmond, CA
Contra Costa County
Richmond regulates outdoor lighting through zoning provisions requiring shielded fixtures, limits on light trespass, and consideration of wildlife impacts near shoreline habitats, though not a formal IDA dark-sky community.
View full Richmond rules →Key Facts Comparison
| Fact | Concord | Richmond |
|---|---|---|
| - | - |
Highlighted rows indicate differences between cities.
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.
Richmond FAQ
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