In 1992 it was "virtually unaltered" since its original construction, and retained its architectural integrity.

[2] It was deemed significant as one of the few surviving buildings associated with Napa's maritime history.

Captain N. H. Wulff was "one of the city's most important steamboat owners and masters during the last half of the nineteenth century.

Because Wulff was engaged in carrying goods and passengers vital to the growth of the town, the building is also significant in the areas of commerce and transportation.... Wulff had the house erected at the height of his career in 1885 and lived in it until his death in 1911.

This article about a property in Napa County, California on the National Register of Historic Places is a stub.