We are redeveloping a heavy industry site in an urban setting into a logistics warehouse building. Our structure is surrounding by parking/truck lanes and our property encompasses 3 sides of a nighboring property that remains an industrial building. Our site lighting extends beyond the property boundary of the neighboring site. However, the neighbor welcomes this additional light in support of their own operations and as a security enhancement. Is it possible to achieve the credit if the neighboring owner provides a written statement permitting/welcoming the light trespass onto their property?

Thanks,

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Dave Hubka

Practice Leader - Sustainability

EUA

LEEDuser Expert

510 thumbs up

Thu, 11/07/2024 - 15:22

I believe site lighting required by code may be exempt if an explanation is provided. Security lighting required by building ownership cannot be exempt. Worked on a project that included Light Trespass lighting, these particular lights where for security purposes and were motion activated - with auto off after 15 minutes. GBCI did not allow us to exclude these from our photometric analysis. My guess is that GBCI will not allow exemption based on a statement from the neighbor, but may allow exemption if provided by a code official.

Emily Purcell

Sustainable Design Lead

CannonDesign

LEEDuser Expert

379 thumbs up

Thu, 11/07/2024 - 16:29

I agree that making an exemption for that lighting won't fly, but there may be an option in expanding your lighting boundary to include shared space like a sidewalk/roadway/driveway. That may of course introduce the need to account for any existing lighting within that extended boundary.

Glenn Heinmiller

Principal

Lam Partners

LEEDuser Basic Member

83 thumbs up

Thu, 11/07/2024 - 18:24

If I were a GBCI reviewer, I would not approve an exemptio based on a letter from the adjacent property owner. What if in the future the adjacent property is sold to someone else, or changed to a different use? @Dave: "site lighting required by code" is not exempt. Roadway lighting required by a governmental authority is. The only exterior lighting that is typically required by building code (in the US) is ligting required for means of egress illumination. With proper design it is possible to meet this code requirement and meet the LEED credit requirements

Dave Hubka

Practice Leader - Sustainability

EUA

LEEDuser Expert

510 thumbs up

Thu, 11/07/2024 - 18:46

an example of exempt site lighting might include 'internally illuminated signage at a hospital'. word on the GBCI street is that this must comply unless dictated by code.

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