Hafod Gethin (Plas Gwyn)

Hafod Gethin, also known as Plas Gwyn, is a farmhouse with attached cowhouse and stables/hayloft, dating to the 18th century. The house part is a two-room, two-storey structure aligned roughly east-west. A cowhouse is attached under the same roof line to the right (west) gable end, and a stables/hayloft sits under a slightly lower ridge to the left. A virtually full-length lean-to extends to the rear, with a smaller lean-to forming a pigsty to the west.

The construction is of roughly coursed rubble stone, limewashed on the house part, the lean-to and stable/hayloft, while the cowhouse is exposed. The gable end of the cowhouse is more regularly coursed with galleting. The main building has a graded slate roof, the large lean-to has corrugated iron sheeting, and the smaller lean-to has slate. The house part features a plank door offset to the right, flanked by nine-paned sash windows, the right window set in a deep recess. Substantial ridge stacks with slate drips are situated at the junctions with the stables/hayloft and the cowhouse. A right-angled lean-to connects the building to Plas Gwyn, and the cowhouse includes a six-paned metal window to the left and a recessed boarded door to the right. The stable area has two windows to the left, a boarded door to the right, and stone steps leading to a retaining wall that accesses a boarded hatch in the hayloft. Two small 19th-century rooflights are in the back roofslope of the house part. Modern windows and doors are present in the large lean-to, and two low doorways serve the pigsty in the smaller lean-to. A boarded door and window are located in the back wall of the cowhouse.

Inside the house part, a stone cross-wall is immediately to the right of the entrance. A cross-beam to the left, with evidence of a former partition marked by a stud partition on its underside, indicates the location of an earlier division. Further beams are found above the cross-wall and along the right wall. Heavy exposed joists run through from the larger left room to a smaller room on the right. The smaller room contains a fireplace with a timber lintel and a cast-iron grate. A massive stack is present in the left room, featuring a chamfered timber lintel and a bread oven. The room also has a slate floor and a straight-flight staircase along the back wall with a rustic pole handrail. The first floor has wide boards and two pegged A-frame trusses; the double purlins are later replacements. The cowhouse has two pegged A-frame trusses with lime torching to double purlins and limewashed walls.