The UNP, constructed in 1936, is a major component of the San Francisco Civic Center. The building's original architect, Arthur Brown Jr., was a prominent San Franciscan and also the designer of San Francisco City Hall and the San Francisco Opera House. The renovations funded by the American Recovery and Reinvestment Act of 2009, were completed in 2013. The building an achieved a LEED® Platinum rating from the U.S. Green Building Council and has won prestigious design and reconstruction awards. Renovations included environmental remediation; new mechanical, electrical, lighting, and plumbing systems; roof replacement and refurbishment of existing historic wood windows; restoration of the historically significant interiors and central courtyard as well as redesign of office interiors.