10/24/2026
Rising on a bluff above the valley carved by the Chartiers Creek, the Borough of Thornburg is a little piece of Southern California in southwestern Pennsylvania.
This morning, we toured the planned suburb, which was created in 1899 by Frank Thornburg and his cousin David on land that had been in the family since 1806. Most of the early houses built here were in the Queen Anne Style.
By 1904, however, the Pittsburgh Gazette celebrated the “model and aristocratic suburb” for its “most unique collection of houses near Pittsburgh.”
The variety of historical residential styles would soon be augmented by homes inspired by Frank Thornburg’s personal passion: the contemporary Mission- and Craftsman-style houses he saw and studied during travels in Los Angeles and vicinity.
Renewing Communities; Building Pride
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