USG Corp. has registered its new headquarters in downtown Chicago as LEED for Commercials Interiors (CI) registered space, the U.S. Green Building Council’s voluntary rating standard for “green” design and construction of tenant improvements.

USG is seeking LEED-CI Gold certification, joining a small group of environmentally-friendly buildings in Chicago. Of the 250 registered LEED-CI spaces in Chicago, only 16 are certified as Gold. LEED ratings include Certified, Silver, Gold and Platinum. “Our new headquarters provides a cost-effective, comfortable and productive environment for each of us as individuals and employees–a place where we can grow and thrive for years to come,” said USG Chairman and CEO William Foote. “The new space maximizes occupant comfort and minimizes our environmental impact at a lower cost-per-square foot than our previous headquarters.” Nearly 1,000 employees occupy 11 floors totaling about 300,000 square feet in the new 18-story glass and steel building.

The company moved to the site, located in Chicago’s west loop, in March. Sustainable design and environmental responsibility are important features of the new space.