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 2018 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.



Understanding the Energy Standards Required by California’s Title 24

By Annabelle Mathis, Engineering Analyst, LEED Green Associate and Davis Ray, Engineering Analyst Sustainable Investment Group (SIG) Over the past 50 years, energy standards have risen to the forefront of environmental policy as a means of reducing energy consumption and lowering the amount of Carbon Dioxide we currently put into the atmosphere (CO2). The benefits of energy efficiency in […]
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What’s new in LEED v4.1

By Samta Brahmbhatt Sustainability Analyst Sustainable Investment Group (SIG) The well-known LEED certification has yet again improved its rating system to better accommodate the environmental and health sustainability impacts. LEED can be certified in residential and commercial buildings during the design and construction phase as well as the operations and maintenance phase. The US Green […]
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