Independence, MO Outdoor Lighting: Light Trespass & Shielding (2026)

Section 14-508 of the Independence Unified Development Ordinance exists specifically to police light trespass: its stated purpose is to protect public health and welfare "by controlling the adverse impacts of glare and light trespass associated with poorly shielded or inappropriately directed lighting fixtures" (§ 14-508-01). The standards apply to any outdoor lighting installed after July 1, 2009 on private property that requires special use or site plan approval from the Community Development Director (§ 14-508-02); routine residential outdoor lights on buildings of four units or fewer are exempt, along with airport safety beacons, motion-triggered security lights running 15 minutes or less, temporary holiday displays, gas or kerosene fixtures, city street lights, government flag lighting, and temporary construction or emergency lighting (§ 14-508-03).

Where the ordinance applies, two rules work together to stop light from crossing property lines. Every outdoor fixture must use a full cut-off lens "to prevent glare and light spill from the project site onto adjacent properties, buildings and roadways" (§ 14-508-05-A); gas station canopy lights must be recessed flush into the canopy so no bulb is visible. The code then sets a hard numeric ceiling: "Spillover light onto residential-zoned property may not exceed two lux (0.2 fc), measured at grade along the lot line" (§ 14-508-06). Flashing, revolving or intermittent fixtures visible from any lot line or street, and high-intensity beams such as searchlights, lasers or strobes, are separately banned outright (§ 14-508-04). A photometric plan documenting fixture type, height, wattage and predicted footcandle levels on a 20-by-20-foot grid must accompany any site plan or special use application so Community Development can confirm the two-lux ceiling before a permit issues (§ 14-508-10).