Dark Sky Rules: Martinez vs Walnut Creek
How do dark sky rules rules compare between Martinez, CA and Walnut Creek, CA?
Martinez and Walnut Creek have similar restriction levels.
Martinez, CA
Contra Costa County
Unincorporated Contra Costa County regulates outdoor lighting through Ordinance Code Title 8 zoning provisions and CEQA review, with stricter standards near Mt. Diablo and in rural residential areas. No comprehensive county-wide dark-sky ordinance, but shielded fixtures are commonly required.
View full Martinez rules →Walnut Creek, CA
Contra Costa County
Walnut Creek regulates outdoor lighting through its zoning code to minimize light pollution and glare on neighboring properties. While not a formal Dark Sky community, the city requires shielded fixtures for commercial properties and limits lighting intensity and hours.
View full Walnut Creek rules →Key Facts Comparison
| Fact | Martinez | Walnut Creek |
|---|---|---|
| Governing code | Ord. Code Title 8 + Title 24 Part 6 | - |
| Commercial standard | Shielded, downward-directed fixtures required | - |
| Sensitive areas | Mt. Diablo vicinity, Morgan Territory, Los Vaqueros | - |
| Residential rule | Must not cause nuisance to neighbors | - |
| Best practice | Full-cutoff IDA-compliant fixtures | - |
| - | - |
Highlighted rows indicate differences between cities.
Martinez FAQ
Does CCC have a dark-sky ordinance?
Not a single comprehensive one, but Title 8 zoning and CEQA review impose shielding and directional requirements for most non-residential projects, particularly in rural and open-space-adjacent areas.
My neighbor's floodlight shines into my bedroom. What can I do?
Document the impact and contact CCC Code Enforcement. Unshielded lighting creating a nuisance can be cited under zoning code. Many disputes resolve after a courtesy letter from the County.
Walnut Creek FAQ
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