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Part 4700  Lighting Standards

Section 11.1.4701 Intent

To provide lighting standards that ensure adequate visibility for vehicle drivers and pedestrian users; that enhance personal safety and protection against assault, theft and vandalism; that ensure comfort levels of property owners and patrons and minimize the negative effects of light pollution and trespass.  Lighting should effectively augment and enhance good site and building design.

Section 11.1.4702 Applicability

These lighting standards apply for all developments exclusive of single family detached developments. All uses that require the City of Centennial approval of a Final Development Plan, Master Development Plan, Administrative Site Plan, Subdivision Development Plan or Use by Special Review shall conform to these lighting standards.

Section 11.1.4703 Submittal Process

When a lighting plan is necessary through an FDP, MDP, ASP, SDP or USR, the submittal requirements are determined by those regulations.  When an approved PDP, ADP, FDP, SDP or USR does not adequately address lighting, these regulations shall govern.  When an application is not part of a formal subdivision or zoning application and is being processed through the building permit process, the following standards and process will be required.

Section 11.1.4704 Submittal Requirements

A. These requirements may be modified as deemed necessary by the Planning Division Manager or designee.

B. Submit a lighting plan with all lighting fixtures (pole, ground and building mounted) including location, type and height of lighting devices at a scale approved by staff.

C. Submit lighting specification cut sheets from the manufacturer for all existing and proposed fixtures.

D. Submit a photometric plan consisting of a point-by-point analysis of the lighting plan in accordance with the IES Publication LM-64. Other supporting information may be required.

Section 11.1.4705 Outdoor Lighting Design Standards

A. All lighting shall be shielded such that the source of illumination (bulb or direct lamp image) is not visible from the property line thereby reducing glare and interference with boundary streets and adjacent properties

B. Except as otherwise allowed for herein, all lighting (including, but not limited to street, parking lot, security, walkway and building) shall conform with the Illuminating Engineering Society of North America (IES) criteria for full cut-off fixtures (100% of light output below 90 degrees, and 90 % of light output below 80 degrees from a vertical line through the fixture).  

C. Lighting fixtures that illuminate landscape plantings, pedestrian walkways, signage, or product display areas shall also conform to the full cut-off fixture. 

D. The lamp cannot extend below the housing of the fixture.  

Section 11.1.4706 Site Lighting

A. Light levels measured at the property line shall not exceed 0.5 foot-candles and 20' beyond the site’s property line (adjacent to residential development) shall never exceed 0.2 foot-candles as a direct result of the on-site lighting.

B. All fixtures mounted within 15' of a residential property line or public right-of-way boundary shall be classified as IES Type III or Type F (asymmetric forward throw).  These fixtures shall be fitted with a “house side shielding” reflector on the side facing the residential property line or public right-of-way.

Section 11.1.4707 Design Requirements

The style, color and design of the fixtures shall be compatible with the over-all design concept and use of materials for the building, site and area of the lighting plan.

Section 11.1.4708 Hours of Operation

Through the review of a development proposal, (or building permit when applicable) the hours of operation may be restricted based upon but not limited to:  location to residential development, topography, proposed use of the property, security and traffic interference.

Section 11.1.4709 Prohibited Lighting

A. All lighting of signage shall comply with the adopted Signage Regulations (Section 11.1.3700).

B. No outdoor lighting may be used in any manner that could interfere with the safe movement of motor vehicles on public thoroughfares.  The following is prohibited:

1. Any fixed light not designed for roadway illumination that produces incident or reflected light that could impair the operator of a motor vehicle.

2. The installation, illuminations or maintenance of beacons or searchlights. 

C. Lights, which are mounted on the ground or poles for the purpose of illuminating the building facade, will be reviewed by the Land Use Services Department on a case-by- case basis for compliance with the intent of these Regulations.

Section 11.1.4710 Installation and Maintenance Standards

A. Operation and maintenance cost of the lighting system will be the responsibility of the property owner. 

B. Requirements for maintenance shall include replacement of bulbs and light fixture, regular cleaning and replacement of light fixtures as needed.