3 House is a historic fire station on Washington Street in the former village of Metcalf in Holliston, Massachusetts.

The single-story wood-frame building was built c. 1871, and was designed to house a single period fire engine.

The building's principal ornamentation is its hose tower, which is topped by an Italianate-style cupola.

[2] The building was added to the National Register of Historic Places in 2000.

This article about a National Register of Historic Places listing in Middlesex County Massachusetts is a stub.