The east and west of the building have timber frames while the north and the south walls are of brick. The east end of the building, also the east end of this range of buildings, has only posts and three rails. The rails have been mostly removed and in-filled with brick. Empty peg holes are visible, marking their former position. A manger and hayrack are situated along the east frame of the building.

The east gable end of building 15. rails have been removed from the timber frame and been filled with brick. The frame sits on a coursed stone wall similar to the northern barn and its additional bays A and B.

The ‘circle W’ brand can be seen on the inside of the lower timbers of the east frame. This symbol was  painted onto newly shorn sheep  and was used by the Watkins family for over a century.

Detail of the joist of the loft floor in building 15.

A later loft was possibly added into the frame. Wall plates are on the north and south brick walls. Beams run east-west with floor joist trenched into the beams. The joist run north-south. Split oak planks have been used for flooring. The loft would have been entered from a ladder in the entrance way of building 14.