Barn, granary and former cart house and stables (Odyn-y-Graig) at Pen-y-Graig Farm

Built of locally-quarried limestone rubble under a slate roof, the barn has a lofted granary and cart house at the N end, and lofted stables and cart house at R angles at the S end. The barn has winnowing doors rather than wagon bays. Doorway in the E wall to the yard has a brick segmental head, flanked by loft loading doors under the eaves, and with another segmental-headed doorway on the R-hand side. Further R are external stone steps, incorporating a kennel, to the granary doorway, which is a boarded door beneath the eaves, with another opening to its R. Below is a wide timber lintel to the former cart house, but the opening has since been infilled with stonework and narrower boarded door.

In the W wall of the barn the winnowing door is integrated with a loading door above, and is flanked by further loading doors and vent strips. To the L of the doorway is a corrugated-iron lean-to that houses a motor installed post 1945 to power the milking machinery. Detached from the building is the stone slab that bore the axle of a horse engine that is marked on the 1880 OS map. To the L of the barn there is a visible break in the masonry between barn and granary/cart house. The rear of the granary has a loft opening, below which is a doorway to the cart house.

The stables and cart house block is set at R angles to the barn, giving an overall L-shaped plan. Originally a lofted farm building, it is now a 2-storey house with modern windows, most of which have been inserted in original openings. There is a clear break in the masonry that shows the extent of the original barn. The former cart house projects on the E side of the barn and forms the S side of the farmyard. In its N wall are 2 wide cart bays with flattened arches, and a window and a doorway under segmental heads, all with stone voussoirs, below 3 former loft openings now converted to windows. A further loft opening converted is in the E gable end, under a stone segmental head, and in the S wall is a window below the eaves. A lower projection from the S wall was originally open-fronted to the E side but has been blocked and has modern door and window. In its gable end there is blocked loft opening under a timber lintel. To the L of this projection the former stables has modern brick-arched windows in its S wall and W gable end, and modern roof lights, but there is a stone segmental-headed former loft opening in the gable end.

Inside the barn vent strips are visible in the original gable ends. The barn has a 3-bay roof with tie beam and raking struts, and 2 purlins, with additional support provided by a single central post. The threshing floor is laid with slate slabs. The stables and cart house has been converted to a house, but the roof has trusses with cambered collar beams.