Barn at Pen-y-Lan

The barn at Pen-y-Lan is a Grade II listed building featuring a combination of stone and timber-framing with weatherboarding and a corrugated iron roof. The timber-framing consists of two heights of sub-rectangular panels set above high stone plinths, with some of the weatherboarding appearing to be ancient. On the northeast side, the year '1671 IB' is carved into the lintel above the barn doors. The byre includes a 17th-century oak-mullioned five-light window, although one mullion is missing, and it retains its original chamfered doorframe. There is a lean-to addition on posts that has since fallen down.

On the southwest side, the byre features a doorframe similar to the one previously mentioned, along with a window and vent located under stone labels. There is also a stone lean-to addition to the barn. The structure does not have a structural division between the barn and the byre, with the byre comprising 2.5 bays. The barn consists of six bays with three or four tiers of stout purlins and trusses that have collars in the byre. The barn itself has three trusses with cambered tiebeams, two of which end short on posts on the southwest side, one of these being a tree with a forked top, and there are raking braces above the tiebeams.