Sustainable Investment Group | A full-service national LEED solutions provider. LEED consulting, engineering, and training all in-house. Sustainable Investment Group

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®, 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.

LEED 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.



Better Buildings Challenge

by Peter Louthan Sustainability Analyst Intern What is it? Launched by the Department of Energy (DOE) in 2011 as part of its Better Building Initiative, the Better Buildings Challenge is one of several free energy efficiency programs available to organizations, manufacturers, and businesses across the U.S. The goal of the Better Buildings Challenge is to improve […]
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A Big Earth Week in the Big Apple

Earth Week is always a busy time for Sustainable Investment Group (SIG), and 2017 was no exception. Here is a brief recap of our activities in New York, and what we did to help celebrate Earth Day and Earth Week with our clients. Earth Week in New York SIG’s, Asa Posner, spent his Earth Week […]
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