Hemet, CA Outdoor Lighting: Light Trespass (2026)

Light trespass, where light from one property spills onto a neighbor's property, is addressed in Hemet through the zoning code's site-development and performance standards rather than a separate light-trespass ordinance. Sec. 90-1046 requires that all lighting be directed or shielded away from nearby residential zones and contained within the boundaries of the site. The zoning performance standards prohibit any use (except temporary construction) that creates direct or sky-reflecting glare detectable by the human senses without instruments beyond the boundaries of the site, which is the city's primary tool against light intruding onto neighboring parcels.

For illuminated signs, Sec. 90-1248 requires illumination to be shaded, shielded, directed, or reduced so as to minimize light spillage onto the public right-of-way or adjacent properties, and prohibits illumination that causes excessive glare constituting a potential traffic-safety hazard. Where lighting causes an ongoing disturbance to neighbors, Hemet's general nuisance provisions can also provide an enforcement path. California has no statewide residential light-trespass statute, so these local containment and glare standards are the operative rules. Neighbors experiencing light trespass should document the spillover and contact Hemet Code Enforcement.