The Sarah Orne House is an historic house at 10 Coolidge Hill Road in Cambridge, Massachusetts. The oldest portion of this house was built in 1807 by John Orne, and originally functioned as a store. It was moved in 1809 and expanded into a house by Orne's mother Sarah. The 2.5 story wood frame house has a five-bay facade with a full-width single story porch. The central window on the second floor has a rounded arch.