Building permit records show that 1100 Washington Street was one of three two-story brick duplexes built for E. J. Valentine in 1903. The duplexes, which cost $4000 each to build, were designed by Denver architect G. W. Huntington and built by Chris Peterson. E. J. Valentine was likely Elmer J. Valentine of Chadron, Nebraska.
According to his 1919 obituary, Elmer Valentine worked as a conductor on the Black Hill division of the Chicago and North Western Railway for thirty-eight years. His work likely brought him to Denver where he invested in real estate. Arapahoe County probate records show that he still owned property in Denver when he died, though he had sold 1100 Washington prior to that time.
Glen W. Huntington was a prolific architect responsible for the design of hundreds of Denver homes. Huntington's best known work is likely the 1909 Fire Station Number One at 1326 Tremont Place, a designated Denver landmark and now home to the Denver Firefighters Museum.
