William Erwin House

William Erwin House, also known as the Imperial Club, was a historic home located at Riverside, Steuben County, New York. It was built between 1850 and 1852, and was a two-story, Greek Revival style brick dwelling. It was a triple-front, temple form building with three major porticoes supported by four four fluted Corinthian order columns. It had two projecting rear wings that formed a "U", that was filled in in 1914. In 1914, the house was acquired by Ingersoll Rand and converted to a recreation center. The house suffered damage due to flooding from Hurricane Agnes in 1972. It has been demolished.

It was listed on the National Register of Historic Places in 1980 and delisted in 1985.