The Grandchamp House, at 1012 Preston Ave. in Thompson Falls in Sanders County, Montana, was built in 1911.

It was listed on the National Register of Historic Places in 1986.

[1] It was deemed significant as "an intact example of a Bungalow style residence."

It was built by carpenter Nelson Grandchamp, who built three bungalows in Thompson Falls during 1910–12.

This article about a property in Montana on the National Register of Historic Places is a stub.