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Outdoor or exterior lighting should ensure that the functional and security needs of a development are met in ways that do not adversely affect the adjacent properties or neighborhood.
The degree to which outdoor night lighting affects a property owner or neighborhood shall be examined considering the light source, level of illumination, hours of illumination and need for illumination in relation to the effects of the lighting on adjacent property owners and the neighborhood.
General design standards for exterior lighting
All exterior lighting, including public street lighting as applicable, shall meet the following design standards:
- Background spaces like parking lots shall be illuminated as unobtrusively as possible to meet the functional needs of safe circulation and protection of people and property. Foreground spaces, such as building entrances and outside seating areas, shall utilize local lighting that defines the space without glare.
- Light sources shall be concealed or shielded to the maximum extent feasible to minimize the potential for glare and unnecessary diffusion on adjacent property and rights-of-way. At a minimum, on-site parking areas, pedestrian walkways and sidewalks shall use full cutoff-type lighting that provides consistent illumination of at least one (1) foot-candle.
- The style of light standards and fixtures shall be consistent with the style and character of architecture proposed on the site.
- All outdoor lighting not necessary for security purposes shall be reduced, activated by motion sensor devices, or turned off during nonoperating hours.
- Light fixtures used to illuminate flags, statues or any other objects mounted on a pole, pedestal or platform shall use a narrow cone beam or light that shall not extend beyond the illuminated object.
- For upward-directed architectural, landscape and decorative lighting, direct light emissions shall not be visible above the building roofline.
- Light fixtures shall be located on the periphery of the areas with light sources directed into parking areas. No light sources shall be located on building facades directed outward toward property boundaries or adjacent rights-of-way.
- Lighting sources shall be color-correct types such as halogen or metal halide, and light types of limited spectral emission, such as low-pressure sodium or mercury vapor lights, are prohibited even in service areas.
- Light fixtures shall be mounted on concrete, fiberglass or painted metal poles no higher than thirty feet from the ground, unless a greater height not to exceed the maximum structure height in the applicable zoning district is approved by the Planning Commission based upon a finding that such lighting shall not adversely affect surrounding properties.
- Lighting mounted on buildings or structures shall not exceed the height of the building or structure.
- Bollard-type lighting fixtures shall be between three and four feet high.
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