Multi-purpose agricultural range at Llethr Cadfan Farm

A multi-purpose farm building on a sloping site, with rubble-stone walls with dressed quoins, and slate roof. Facing the yard on the N side, the central barn doorway has a brick segmental head and boarded double doors, and is flanked by ventilation strips. Further R is a shallow stone segmental-headed cart shed doorway, also with double boarded doors. On the L, downhill, side is a split boarded door to the stable, with window to its L, both under stone segmental heads. Upper R of the doorway is a loft opening beneath the eaves. The L gable end has external stone steps to a boarded loft door under a segmental head. The steps have small recesses below them. In the R gable end are similar stone steps to the granary doorway, with segmental head and boarded door, and a recess for a kennel below the steps. In the rear elevation is a central barn doorway similar to the front, with corrugated iron lean-to canopy on wooden brackets, and flanked by ventilation strips. Line shafting, for a threshing machine, projects through the wall on the R side of the doorway.

The barn has sawn collar-beam trusses.