Bush-Lyon Homestead is a historic home located at Port Chester, Westchester County, New York. The earliest part was built about 1720. It is a  1 1⁄2-story, five-by-two-bay, frame residence faced in shingles and clapboards. It has a center stone chimney. The rear kitchen wing and 1-story north wing were added about 1800 and the house given its saltbox configuration. In the mid-19th century, the present porch was added with its Doric order piers and a 1-story, gable-roofed wing added. Also on the property are a carriage house, former slave quarters, and a storage building / corn crib. The property was purchased by the village in 1925 from the Bush estate. It served as headquarters for General Israel Putnam, 1777–1778.