Existing building and extension building in one certification

Helena Garcia

Sustainability consultant

PGI ENGINEERING

LEEDuser Basic Member

5 thumbs up

Project location :

Spain

November 13, 2023

In our team we are conducting a study for the construction of an extension of an existing building.
The property applies for LEED certification for both buildings (existing and expansion). The facilities of both buildings will be connected together.
How can we work this case? someone has encountered a similar situation? Can you perform a single certification?

Post a reply

Dave Hubka

Practice Leader - Sustainability

EUA

LEEDuser Expert

510 thumbs up

Mon, 11/13/2023 - 14:09

Here is a link that is helpful in such scenarios: https://www.usgbc.org/leed-tools/rating-system-selection-guidance#:~:text=If%20a%20rating%20system%20is,rating%20system%20should%20be%20used.

If a rating system is appropriate for less than 40% of the gross floor area of a LEED project building or space, then that rating system should not be used.
If a rating system is appropriate for more than 60% of the gross floor area of a LEED project building or space, then that rating system should be used.
If an appropriate rating system falls between 40% and 60% of the gross floor area, project teams must independently assess their situation and decide which rating system is most applicable.