Barn attached to the east of Sidnall Farm House

The building is a barn attached to the east of Sidnall Farm House, constructed from rough rubble stone and timber framing, with a corrugated asbestos roof. It has a rectangular shape and is oriented from west to east, situated next to the farmhouse.

On the exterior, the ground floor is made of stone, while the first floor features a weather-boarded timber frame. The north side, which faces the farm yard, has various irregular openings on the lower level and a taking-in hatch on the far left of the upper level. There is also a single-storey, open-fronted lean-to supported by five timber posts.

The gable end on the east side includes a small inserted casement window on the left side of the ground floor. The south side has an inserted casement window on the right side of the ground floor, along with a 20th-century lean-to.

Inside, the roof structure is mostly intact, featuring a tie beam, collar, upright posts, short diagonal braces, and twin purlins.