Warder Mansion (also known as Warder-Totten House) is a Washington, D.C. apartment complex at 2633 16th Street Northwest. Located in the Meridian Hill Park neighborhood, it is the only surviving building in the city designed by architect Henry Hobson Richardson. An early example of preservation commitment, the building was saved from demolition in the 1920s by being disassembled and moved 1.5 miles (2.4 km) north of its original site.