Light Trespass: El Cerrito vs San Ramon
How do light trespass rules compare between El Cerrito, CA and San Ramon, CA?
El Cerrito and San Ramon have similar restriction levels.
El Cerrito, CA
Contra Costa County
Light trespass and glare onto adjacent properties in unincorporated Contra Costa County is prohibited under Ordinance Code Title 8 nuisance and zoning provisions. Commercial and multi-family projects must meet foot-candle limits at property lines through CEQA lighting review.
View full El Cerrito rules →San Ramon, CA
Contra Costa County
San Ramon Development Code limits light glare and spillover from private lighting onto neighboring properties and public rights-of-way. Typical standards require illumination at property lines not to exceed 0.5–1.0 foot-candles for residential-adjacent properties, with full-cutoff fixtures required to prevent direct view of light sources from off-site. Violations are handled through code enforcement and may also give rise to civil nuisance claims. Security lighting is allowed but must be shielded and ideally motion-activated.
View full San Ramon rules →Key Facts Comparison
| Fact | El Cerrito | San Ramon |
|---|---|---|
| Property-line standard | ~0.5 fc onto residential parcels (typical) | - |
| Governing code | Ord. Code Title 8 + Ch. 14-6 nuisance | - |
| CEQA review | Photometric plan required for new development | - |
| Enforcement | DCD Code Enforcement | - |
| Security lighting | Allowed if shielded and not a nuisance | - |
| - | - |
Highlighted rows indicate differences between cities.
El Cerrito FAQ
My neighbor's light shines into my window — is that illegal?
Unshielded lighting that creates a nuisance on adjacent property can be a code violation. CCC Code Enforcement can investigate and require the light to be shielded, redirected, or dimmed.
How bright can a commercial property light its parking lot?
Commercial lighting must be shielded and typically limited to around 0.5 foot-candles at the property line when adjacent to residential uses. Photometric plans are reviewed at the permit stage.
San Ramon FAQ
Compare other topics
See how El Cerrito and San Ramon compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool