About this Collection

Sustainable Investment Group, LLC (SIG) is a full-service sustainability consulting firm that provides technical solutions to design, construction, real estate, and building operations professionals to support a high level of performance, value, and quality in the built environment. We offer LEED Consulting, Commissioning, ENERGY STAR verifications, energy audits, and corporate sustainability services. Beyond consulting, SIG helps grow the green building industry through education and training. We have helped over 12,000 professionals across the U.S. prepare for their LEED exams.