Integrative Sustainability Group (ISG) is a consulting firm that specializes in sustainability and environmental integration for public and private sector clients. Founded in 2003, ISG has extensive experience with over a hundred sustainability and green building projects, covering millions of square feet and involving billions of dollars in construction. The firm operates globally, collaborating with partners across Europe, America, and the Middle East.

ISG offers a range of services, including sustainability consulting, green building and design, project integration, and institutional knowledge transfer. They help clients embed environmental goals into their operations and development projects, ensuring that sustainability becomes a fundamental part of their business practices. By providing tailored sustainability strategies and integrated environmental solutions, ISG supports organizations in achieving long-term environmental stewardship and green building certifications like LEED.