Light Trespass: Pittsburg vs San Ramon

Pittsburg prohibits light spillover and glare onto neighboring properties under Municipal Code Title 18. Outdoor fixtures must be shielded to contain light within the originating property. Measurable light trespass is enforced as a nuisance, with foot-candle limits at property lines typically 0.5 fc or less for residential zones.

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.