Southfield, MI Outdoor Lighting: Light Trespass & Shielding (2026)

Southfield's exterior lighting and glare standard, Sec. 5.22-4-1(1)(c)-(d), sets numeric limits on how much light a property can throw onto the land around it, applying in every zoning district. Where a site sits next to a residential district or residential use, whether the lit property is itself residential or not, illumination measured along the shared property line cannot exceed 0.1 footcandle. Between two non-residential neighbors the ceiling is five times looser, 0.5 footcandle along the property line. Regardless of what abuts the site, the code also imposes a hard cap of 10 footcandles of light intensity in any given area, so no interior hot spot on a parking lot or loading dock can run brighter than that citywide maximum.

The same subsection that sets these limits gives city council a narrow escape valve: at its sole discretion, council may authorize lighting above the maximum permissible levels, but only on a showing that the extra brightness is necessary for safety or security purposes, not for advertising or aesthetics. This footcandle math sits inside the broader lighting article covering shielding, fixture height and glare from indirect sources like welding or headlights, all administered through site plan review by the planning department before a project gets its certificate of occupancy, and enforced afterward by the Director of the Department of Building and Safety Engineering.