West Plenmeller Farmhouse and Adjacent Barn

West Plenmeller Farmhouse and the adjacent barn is a bastle house dating from the late 16th century or early 17th century. It was remodeled with an outshut and a barn added in the mid-18th century. The house was refronted around 1800, the outshut was heightened, and a west wing was built later in the 19th century. The older part of the building is constructed from massive rubble with large, roughly-shaped quoins, while the later work features smaller rubble with cut dressings, except for the 19th-century section made of squared stone with tooled and margined dressings. The roofs are covered in blue slate, except for the west wing, which has purple slate.

The building is L-shaped, with two storeys and two bays on each side. The older right section has late 19th-century sash windows set in earlier, almost square stone surrounds, with a fifth similar window centrally placed at ground floor level. To the right of this window is the right jamb of a former off-centre 18th-century door with alternating raised blocks. The left section, added in the 19th century, features a six-panel door with an overlight, a late 19th-century sash window above, and a left gabled bay with paired sashes and a single sash window above.

The left return of the building shows the barn to the left, which has a central door in a raised alternating block surround, flanked by slit vents. The right return reveals a blocked bastle door with massive dressings, and the barn is set back to the right with a central boarded door in a surround of alternating raised blocks. The rear outshut has a two-light flat-faced mullioned window with iron bars. Inside, the west end of the bastle retains a 1.2-meter thick internal wall, while the barn features three principal-rafter roof trusses with collars and three tiers of blocked slit vents in the north gable.