Great Treheer

Great Treheer is a farmhouse dating from around the late 17th century and early 18th century, with a rear extension added around the early 19th century. The building is constructed of rendered stone rubble with a steeply pitched slate roof, featuring gable ends. The west front, the main façade, has a projecting wing with a gable, and there is a further extension to the right with a hipped roof. A brick stack is visible on the left hand gable end, and a projecting stone rubble stack with a removed shaft is located on the front of the projecting wing.

The original layout likely comprised three rooms with a cross passage. The cross passage is located on the left, with a staircase projection to the rear. A passage runs along the right, between the centre range and the kitchen on the left. There is a further staircase projection on the rear of the kitchen wing, and a dairy has been added in the angle.

The west front is asymmetrical, featuring four windows. At ground floor level, there are two double-sashed windows without glazing bars, flanking a partly glazed, panelled door with a flat hood and an 18th-century dentilled cornice. A further four-pane sash window is on the right. Above are three four-pane sashes. The projecting wing on the right has a four-pane sash window to both the ground and first floor.

Internally, the room on the left has fielded panelling to dado height, and a six-panelled door with fielded panelling to the north. The centre range has doors with simple fielded panelling. The kitchen, in the right-hand range, has a plastered ceiling and a large fireplace with a chamfered granite lintel and granite jambs. Two dog-leg staircases lead to the rear projecting wings. The staircase on the right has had some turned balusters removed. The first floor has full 18th-century panelled doors. The roof structure comprises 10 bays, with chamfered principals and cambered collars.