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

Light trespass in San Jacinto is handled by the zoning performance standards, not by a measured foot-candle limit. Section 17.300.080 opens by requiring that light or glare from exterior lights, mechanical or chemical processes, or reflective materials be shielded or modified to prevent emission beyond the property line. Subsection A then states the operative duty: exterior lights shall be located so as to eliminate spillover illumination or glare onto adjoining properties and to prohibit any interference with the normal operation or enjoyment of adjacent property.

Placement is part of compliance, because the duty attaches to where each fixture is located on the lot. Subsection B separately requires controlled beams that are not directed across a property line, and bare bulbs are not allowed. Chapter 17.300 states its purpose as establishing uniform performance standards that promote compatibility with surrounding areas and land uses (§ 17.300.010), and § 17.300.020 applies the chapter to all new and existing uses in all zones.

The exemptions are narrow. Fixtures legally installed before the Development Code took effect are exempt, but a reconstructed or replaced luminary must comply. Temporary holiday decorations are exempt, and so is portable temporary lighting used by law enforcement or emergency services personnel to protect life or property. Parking area lighting is governed by Section 17.330.080.

Applicants can be asked to prove compliance. Under § 17.300.020, if requested by the Director or the review authority, applicants provide evidence to the Director that the proposed development complies with the chapter's standards before the issuance of a building permit or business license.