Light Trespass: Brentwood vs San Ramon

Brentwood's code prohibits outdoor lighting that produces excessive glare or spills onto neighboring properties at levels high enough to disturb use and enjoyment. Typical standards limit residential property-line illuminance to about 0.1 foot-candles and require shielded fixtures for bright sources.

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.