50 United Nations Plaza

50 United Nations Plaza is a historic building built in 1936 in the heart of San Francisco’s Civic Center. Hathaway Dinwiddie’s work involved a complete historic renovation, seismic retrofit, and interior reconfiguration of the 5-story Federal Building. Sustainable design and construction principles were utilized to preserve the historically significant building. Such methods included the replacement of the roof with a new, living roof, extensive natural ventilation, energy-efficient lighting, and natural California-scape vegetation.

50 United Nations Plaza is a centerpiece of the General Services Administration’s effort to reduce or eliminate the environmental footprint of its 10,000 government buildings.

50 United Nations Plaza is LEED Platinum certified.