Temecula, CA Outdoor Lighting: Light Trespass & Shielding (2026)

050(D) governs light trespass for commercial, office, business park, and industrial development citywide. The rule covers every fixture used to illuminate signs, structures, landscaping, parking, loading and unloading areas: each must be focused, directed, and arranged to prevent glare or direct illumination from crossing onto a public street or an adjoining property. This sits inside the chapter's broader special use regulations, which also require screened trash enclosures kept out of view from public streets or adjacent residential areas, and outside storage confined to the rear two-thirds of the lot and screened by walls, fencing, or landscaping.

Planning staff review lighting plans as part of the development plan or conditional use permit process for any commercial, office, or industrial project, and can condition approval on shielding, redirecting, or lowering fixtures that spill onto neighboring parcels. Related site-specific lighting standards elsewhere in the code echo the same anti-glare principle: parking lot lighting for adjacent-to-residential uses must prevent glare or direct illumination from intruding into any adjacent residential zone, and outdoor lighting must stay stationary, shielded, and directed away from adjacent properties and public rights-of-way.

Property owners in Old Town Temecula or near residential edges of commercial zones should expect closer scrutiny of fixture placement given the chapter's emphasis on protecting adjoining property from nuisance illumination. The section traces to Ordinance 95-16 and has been amended repeatedly since, most recently by Ordinance 2023-13 (effective December 12, 2023), without altering the core glare-prevention standard.