Barn/Cowhouse at Plas Glan-yr-Afon

3-bay barn aligned roughly north-south with lean-to attached to west long wall and lower cowhouse, flush with the north gable end, projecting to the east. Roughly coursed rubblestone, more tightly jointed to barn; slate roofs. North gable end of barn has central doorway flanked by tall rectangular window openings and a central pitching door to upper level. Cowhouse has 2 stable doors to front and small window in corner next to barn.

Barn has 2 large pegged A-frame trusses with ties apparently cut off near ends. Doorway to back wall and another in left wall leading to cowhouse, which has C19 A-frame truss roof.