Upper Llaneon, including attached former cow house

Upper Llaneon is a 1½-storey house built of rubble stone, featuring a steep slate roof with a stone stack on the left and a reduced stone stack on the right. The front includes a boarded door on the left, a 2-light window, a 1-light window further to the right, and a 2-light roof dormer. The gable end has a 2-light window on the lower storey and another 2-light window in the gable. At the rear, there is a 6-pane fixed window and a small 2-light window on the right. Part of the rear wall on the right side has been rebuilt in blockwork.

Attached to the house is a former cow house, primarily constructed of rubble stone, with part of the front rebuilt in blockwork and topped with a corrugated iron roof. It features four boarded doors, with the right-hand door leading to a cross passage and a small window above it. The loft area is weatherboarded and has two openings. The rear of the cow house has been partially rebuilt in brick, and there is a boarded door to the cross passage at the left end.

The house retains its lobby-entry plan dating back to around 1700. Inside, the hall contains two spine beams, and the fireplace has a stop-chamfered lintel with a bread oven. There is evidence of an earlier bread oven in the cross passage. A post-and-panel partition separates the hall from the inner room, with a timber-framed section above in the attic. The roof trusses feature collar beams with raking struts.