Edward R. Hills House

The Edward R. Hills House, also known as the Hills–DeCaro House, is a residence located at 313 Forest Avenue in the Chicago suburb of Oak Park, Illinois. It is most notable for a 1906 remodel by architect Frank Lloyd Wright in his signature Prairie style. The Hills–DeCaro House represents the melding of two distinct phases in Wright's career; it contains many elements of both the Prairie style and the designs with which Wright experimented throughout the 1890s. The house is listed as a contributing property to a federal historic district on the U.S. National Register of Historic Places and is a local Oak Park Landmark.

Since construction, the home has undergone many changes. During the 1906 remodel, the original late 19th century Stick style structure was moved and essentially completely rebuilt. Alterations carried out between 1912 and 1965 obscured some of Wright's intended design.