 His son, Joe Vallerga, later built a grocery store on part of the site, and the Vallerga family continued to own the property until the 1990s.In 1996, the city of Napa's Cultural Heritage Commission published a staff report which described the site as being eligible for the National Register of Historic Places.The commission described the site as an "important part of the Italian presence and heritage in Napa County" and recognized the garden as an authentic representation of Italian landscape organization, a distinctive feature of the city's cultural landscape, and an influence on the city's agricultural development in the late 1800s and early 1900s.