Virginia: Tidewater and Piedmont » Richmond Metropolitan Area » Broad Street from West of 3rd Street to Belvidere Street » Duggan Building Duggan Building Details 1858. 320 W. Broad St. When constructed, this diminutive frame building was one of the few on Broad Street; that it has survived is surprising. It is probably one of the oldest commercial buildings in Richmond. Writing Credits Author: Richard Guy Wilson et al.