Beam Engine House, Thornton

The Beam Engine House in Thornton is a classical engine house dating from the late 18th to early 19th century. It stands three storeys high and consists of a single bay. The building is in poor condition and is constructed from ashlar and squared rubble, featuring droved quoins. It has a base course and round-headed openings with voussoirs.

On the west elevation, there is a broad, raked buttress next to a blocked round-headed opening, with a square opening located near the top. The north elevation has a door to the right at ground level. The east elevation features a door at the centre below a round-headed opening, along with another blocked round-headed opening at the second floor. The south elevation includes a window to the right and shows evidence of an adjoining pitch-roofed building.