Hi all, hoping you can provide some insight into this scenario.
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,
Dave Hubka
Practice Leader - SustainabilityEUA
LEEDuser Expert
530 thumbs up
November 7, 2024 - 10:22 am
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 LeadCannonDesign
LEEDuser Expert
370 thumbs up
November 7, 2024 - 11:29 am
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
PrincipalLam Partners
100 thumbs up
November 7, 2024 - 1:24 pm
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 - SustainabilityEUA
LEEDuser Expert
530 thumbs up
November 7, 2024 - 1:46 pm
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.