Barn and Cowshed at Llanvair Farm

The barn and cowshed at Llanvair Farm are 19th-century structures made from roughly coursed sandstone conglomerate rubble, topped with Welsh slate roofs, while the lower courses are in stone slate. The granary has a roof made of corrugated asbestos sheeting. The barn and granary are located on the east side of the farmyard, with the cowshed positioned at right angles on the north side.

The barn features central cart doors leading to the threshing floor and has a slit vent on either side. The left side of the barn is partially hidden by two small modern sheds. The road-facing elevation mirrors this, but the left side is obscured by a 19th-century extension with a sheet metal roof. Adjacent to the barn is a double cart shed with two elliptical arches, partly filled with wide doors supported by timber lintels for bull pens. Above this, there is a three-light timber unglazed window for the granary, which is accessed via a flight of steps on the gable wall. The rear wall of the granary is blind.

Facing into the yard is a low cowshed range that has two narrow doors and a similar window for the hayloft in a half dormer. The rear of this range was not observed. Inside, there is a stone-paved threshing floor and a four-bay roof supported by queen strut trusses, complete with purlins and secondary rafters; one truss has been altered to a plain triangular shape. There are signs that the barn walls have been raised. The interiors of the cowshed and granary were not seen.