Architectural services for 12701 and 12711 Twinbrook Parkway are part of a development plan to further expand the current U.S. Pharmacopeia facility. The new buildings utilize a courtyard and plaza on the site to create a campus-like setting with new covered connections between the existing building and the new facility. State-of-the-Art skin systems will maximize the buildings’ thermal efficiency, while creating dynamic space. Sustainable practices, including passive solar devices, solar water heaters, and condensate water collection, are being utilized to reduce life cycle building costs. The LEED certified headquarter expansion provides U.S. Pharmacopeia with a new modern facility that offers great function and flexibility, while providing a healthy and environmentally responsible work environment that motivates its inhabitants.