Hydrant No. 3 House

Hydrant No. 3 House is a historic fire station on Washington Street in the former village of Metcalf in Holliston, Massachusetts. It is referred to locally as the Metcalf Pump House. 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. It is the town's oldest surviving fire house, and one of only a few 19th-century municipal buildings in the town. The building remained in service until 1899. The original No. 3 engine is in storage, and was restored in 1950. The building is now maintained by volunteers.

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