The Neff-Passmore House is one of Lancaster's finest Georgian houses. It was built ca. 1785. In the early 1800s this was the home of Lancaster’s first mayor, Attorney John Passmore, and wife Mary (Clarkson) Passmore.
The mayor also was treasurer of St. James Episcopal Church. Mrs. Passmore was daughter of the church rector, Reverend Joseph Clarkson.
The home was built by Thomas Poultney, a merchant. It was first occupied by Dr. Christian Neff and his family. The house features Flemish bond brickwork, water table, brick belt course, six-over-six sash, entry with fluted pilasters, corniced hood, and tracery fanlight. The shutters are white and dark green, a typical color combination of that era. A historical sign on the sidewalk explains the house history.