Sustainable Investment Group | A full-service national LEED solutions provider. LEED consulting, engineering, and training all in-house. Sustainable Investment Group
  • ENERGY STAR Partner of the Year 2020 logo over photo of atlanta skyline at piedmont park, ENERGY STAR, ENERGY STAR Partner of the Year

Sustainable Investment Group (SIG) | National LEED Solutions

You can trust us to help you achieve your highest sustainability goals, especially as they pertain to LEED. As a LEED Proven Provider® our methods for documenting and earning LEED credits have been perfected over time and are trusted by the USGBC. So trusted in fact, we are the only 3rd party consultants to have our own LEED Volume program. We have worked on over 400 LEED projects and 50 Million SF of commissioning, retro-commissioning, energy auditing, ENERGY STAR, and energy modeling projects. Most companies do not offer both LEED consulting and the engineering services required for some of the prerequisites and credits each project must earn, but we do. As a bonus, we have expertise in training professionals like yourself on how to pass your LEED exams and save energy at your property. We are a full-service LEED and green building consulting firm offering our clients support with LEED®, WELL®, Fitwel®, ENERGY STAR®, GRESB®, Green Globes®, Earth Craft®, and more!

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Our Services

LEED Training

SIG provides comprehensive training on a wide range of sustainability topics. We have developed many standard training courses and provide customized programs to meet the objectives and interests of your specific audience.


LEED Consulting

With offices in Atlanta, GA, Boulder, CO, Minneapolis, MN, New York, NY, and San Francisco, CA, SIG is a green building consulting firm whose team members bring years of experience in LEED, design-build commercial construction, real estate development, business efficiencies, and eco training.

Energy Engineering

SIG has in-house Technical Services Staff that hold credentials like PE, CxA, CEM, CPMP, LEED AP, and more. Our engineers have extensive Retro-Cx, LEED prerequisite, Energy Audit, and ENERGY STAR experience.



Gen Z Makes Sustainability Important for All Businesses

By Calvin Furbee Sustainability Analyst Sustainable Investment Group (SIG) As the economy becomes dominated by the younger generations, sustainability matters more than ever. Generation Z, which includes everyone born after 1996, will make up the largest portion of the U.S. population and economy in the coming years. Being exposed to the internet and modern technology […]
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Healthy Food Promotion in Green Buildings

By Libby Dunne Sustainability Analyst Sustainable Investment Group (SIG) Americans spend an average of 90% of their time indoors. Therefore, the indoor environment in which people spend most of their time (at home and at work) should be conducive to good health. One of the core building blocks for overall health is healthy eating. Healthy […]
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