The original 1889 structure was quite small. The home was extensively remodeled in 1895, when among other changes the kitchen was enlarged and converted to a dining room, the upstairs nursery was expanded and converted for use as Catherine's dayroom, and the Children's Playroom and a new kitchen were added to the back of the house. A second major addition was made in 1898, when the Studio and Connecting Corridor were built. In the Studio, Frank Lloyd Wright and associated architects like Walter Burley Griffin and sculptor Richard Bock advanced the Prairie School of Architecture and designed many notable structures, including the Robie House, Unity Temple, the Laura Gale home, and the Larkin building. After 1909, the Studio was converted into a residence for his wife and the younger children. Later on, the Home and Studio became an apartment building. In the 1960s it fell into disrepair as the owners began to neglect the property due to financial problems. The longtime roofing company entrusted by Frank Lloyd Wright, Oak Park-based Tuscher Roofing, took control of the property. In 1974, the structure was handed over to the National Trust for Historic Preservation and the 13-year restoration began.