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Welcome to Tholen Sustainability Group - Your LEED® EB Resource!

Tholen Sustainability Group is here to assist you with your LEED for Existing Buildings certification projects. We have a talented group of experts experienced in all areas of the Existing Building rating system to support you and your project.

What is LEED for Existing Buildings?

The impression in the marketplace is that LEED is only for new construction, which is not correct! LEED for Existing Buildings was developed by the U.S. Green Building Council to provide the existing building stock with an entry point into the LEED certification process.

LEED EB certification recognizes actual building performance rather than design. Properly implemented, EB can reduce operating costs and promote a healthy, productive indoor environment. EB measures the areas of water and energy efficiency, use of environmentally friendly cleaning products, indoor environmental quality, and the effectiveness of recycling programs among others.

Why Certify My Building?

Property Review Packages

Tholen Sustainability Group offers a number of Property Review Packages to assist you in evaluating LEED certification for your property.

You may also call or email us to discuss your project needs. We look forward to speaking with you.



Lisa Tholen, LEED AP
LEED for Existing Buildings
Sustainability Consultant
P: 310.701.5919
F: 310.419.4583
E: Lisa@TholenSustainability.com

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