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

260 (Outdoor Lighting Facilities and/or Fixtures) governs every private outdoor light installed on or after the section's effective date in any zoning district. The stated intent is to stop light pollution that "unduly illuminates adjacent properties" while still allowing lighting needed for security. Fixtures used for signs, architectural or decorative effects must be fully shielded, aimed toward the ground, and run on automatic timing devices so they emit only the minimum light needed. and sunrise, with listed exceptions for active outdoor sales, security lighting for streets, walkways and parking lots still in use, ongoing recreational activity, signs on businesses open to the public, and low-pressure sodium fixtures.

0 foot candle onto an adjacent commercial or industrial lot, unless that exceeds pre-project ambient light. The City Planner interprets compliance, and nonconforming fixtures installed before the ordinance are grandfathered unless 50 percent or more of a property's fixtures are replaced or the fixture count is increased by 50 percent or more, at which point the whole installation must conform. City-owned lighting, school and special-district facilities, and SDG&E-operated street lights are exempt, as are detention-facility lights and seasonal Christmas lighting between Thanksgiving and January 10.