Outbuilding to E of Rhiwbren Fawr

The outbuilding located to the east of Rhiwbren Fawr is a two-storey structure built from whitewashed rubble stone and topped with a slate roof. It features a long range with irregular openings. The ground floor has eight openings, which include doors and one window in the third position. The last two doors are closely spaced, and there is an added lean-to on the right side. The loft has a square opening to the left of the third opening, a narrow slit opening to the left of the sixth, a very small window to the left of the seventh, and an opening under the eaves above the lean-to. There are outside steps leading to the loft door at the right end of the building. The roof structure includes scarfed trusses with collars.