North Star House is a house located roughly a mile south of Grass Valley, Nevada County, northern California. The building served as the superintendent's house for the North Star Mine. Commissioned by Superintendent Arthur De Wint Foote and his wife, Mary Hallock Foote ("Molly"), an author and illustrator, it was designed in 1905 by the architect Julia Morgan. This was her first significant, large-scale, residential project. The house is notable for its relationship to the literary career of Molly Foote and the master architect, Morgan.