Kerthen Farmhouse and Front Garden Wall

Kerthen Farmhouse and the front garden wall are a farmhouse and garden wall dating from the 18th century, with extensions from the 19th century. The structure is built of stone rubble and possibly cob, with some dressed granite, and features a rendered front wall. It has a steep Spanish slate roof with gable ends. The left chimney is made of stone rubble with a brick shaft, while the right chimney is over a gable adjoining a 19th-century two-storey farm building that has a lower pitched scantle slate roof.

To the left side of the front, there is a single-storey 19th-century wash house that is at right angles to the main building and has a large axial brick stack. The overall plan of the farmhouse is L-shaped, with a double-depth layout that includes a kitchen/living room on the left and presumably a parlour on the right. A cross passage leads to a central dog-leg stair between shallow rear service rooms, with the left-hand rooms now combined into one. A large barn was added to the right side in the mid-19th century, and the wash house or bakehouse extends further to the left than the main house.

The northeast front is slightly irregular with three windows on the upper floor. A roughly central doorway is set within a 20th-century porch, and the fenestration is grouped towards the right, with the ground floor right-hand window being wider, likely due to enlargement. The windows feature horned sashes. The wash house has a ledged door and original casements with small panes.

The interior, which was partly inspected, includes 18th-century ovolo-moulded beams in the left-hand room, a dog-leg stair with a closed string and column-turned balusters, a fielded three-panel door leading into the parlour, and some two-panel doors on the first floor. The garden wall is made of grouted rubble and features round-headed granite monolith piers flanking the gateway, along with a 19th-century wrought iron gate. There have been superficial 20th-century external alterations, but the farmhouse remains a fairly complete 18th-century house with minimally altered 19th-century extensions.