Statement of Significance (as of designation - May 16, 2000):
The Hagan House is a nationally significant work of American architect Frank Lloyd Wright, and one of only two such works in western Pennsylvania. While Wright designed many houses during his prolific career, only a few high-end, more customized examples based on the Usonian model exist. Of these examples, the Hagan House is a particularly intact, well-maintained, and solidly constructed example executed in native stone, tidewater cypress, and copper. The house stands as an excellent example of residential design from the final decade of Wright's career.