While the renovation of the Friends Center in downtown Philadelphia began as a modest capital improvements project, the center now stands as a model of sustainable design that has achieved the highest LEED NC Platinum score in Pennsylvania. The 1972 office building is topped by a vegetated roof and photovoltaic array. Stormwater harvested from the office building roof is collected in cisterns in the basement of the 1856 Meetinghouse and reused in the office building to flush toilets, reducing water consumption by 57 percent. The first in southeastern Pennsylvania, a field of seven standing column geothermal wells ranging from 650′ to 1500′ deep, heats and cools the building, dramatically reducing costs and the campus’ carbon footprint. In addition, 47 percent of the materials used came from within 500 miles of the project, 92 percent of the construction waste was diverted from landfills, and 90 percent of the office building spaces have views outside. By embracing the Quaker tenet that “peace and justice depend upon restoring the Earth’s ecological integrity,” the Friends hope to share their experience using their facility as a teaching tool, and ultimately, transform design and construction practices. UJMN Architects + Designers served as the Architect on the project under the leadership of Mark Ueland, AIA, LEED AP, and oversaw a diverse team of highly committed consultants.