PHOENIX -- The buildings stretch from 11th Avenue to 52nd Street and include five homes and one church all designed by famed architect Frank Lloyd Wright, and all are part of a new plan by the Phoenix Historic Preservation Commission.

The proposed plan, which would cost $1.2 million, was created after a home Wright designed for his son in the Arcadia area narrowly escaped demolition. A developer bought the land and planned to tear down the 2,500 square foot concrete house and build two new houses in its place....