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

Section 18.20.200(E)(9)(a) of the Redlands zoning code states: "Lighting and glare overspill shall be contained on-site and shall not exceed one-half (0.5) foot-candle as measured at the property line." The limit applies to agritourism facilities and activities permitted or conditionally permitted in the A-1 Agricultural District under section 18.20.200, including farm-stay facilities, wineries, petting zoos, hayrides, and produce stands, and it works together with the shielding and curfew rules in the same subsection to control nighttime impacts on neighboring agricultural and residential land. The same 0.5 foot-candle ceiling recurs elsewhere in Title 18's zoning chapters, including the accessory-building architectural design standards of section 18.20.160(H)(2), which separately requires exterior light fixtures on accessory buildings to "contain glare within the subject property and prevent light trespass onto adjacent properties exceeding 0.5 foot-candle as measured at the property line," and the recreation-court lighting standards of section 18.156.750(E), which cap light trespass from private tennis or sport courts at "one-half (0.5) foot-candle at any property line." Because the standard is measured at the property line rather than at a fixed distance, a landowner installing agritourism lighting must model or measure actual spill onto neighboring parcels, not just aim fixtures downward, and the citywide recurrence of this same figure shows Redlands treats 0.5 foot-candle as its baseline light-trespass benchmark.