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 2019 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.



CALGreen, California’s first green building code

By Ali LoPiccolo Marketing Intern Sustainable Investment Group (SIG) California is recognized for having ambitious climate and energy goals. Pursuit of these goals requires the state to seek thoughtful action while ensuring that the energy systems remain stable and accessible. As a part of California’s Building Standards Code, ‘Title 24 Part 11’ addresses the state’s […]
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A Glance at Greenbuild 2019 in Atlanta

Sustainable Investment Group (SIG) is proud to announce our participation in the Greenbuild International Conference and Expo for 2019. This year’s conference is especially exciting for SIG because it is being held in our home city of Atlanta, Georgia. The Greenbuild topic for 2019 is “A New Living Standard.” Greenbuild strives to bring together a […]
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