St. Luke's used the house for services and subsequently between 1892 and 1895 erected a Richardsonian Romanesque building on the site that wrapped around the house slightly; thus when a six-story apartment building was built in about 1910 flush on the opposite side, the house was tightly enclosed and many of its features hidden. The American Scenic and Historic Preservation Society bought the Grange in 1924 and turned it into a public museum in 1933. Furniture and decorative objects associated with the Hamilton family were displayed.