Trefusis Barton Farmhouse

Trefusis Barton Farmhouse is an 18th-century farmhouse constructed with slatestone rubble walls and dressed granite quoins, featuring slate sills and timber lintels. The roof is hipped with dry Delabole slate at the front and has a gable-ended wing at the rear left. There are brick chimneys located over the right side wall, the rear wall left of the middle, and the front wall on the left, which was originally the left-hand side wall of the house. The overall plan is shaped like an L, with a single-storey garage extension at right angles to the left side of the house, adjoining a barn, and a rectangular walled courtyard at the rear with attached lean-tos. The house has a single depth plus a linking passage, with two rooms in each arm of the L.

The farmhouse has been clearly remodeled. Originally, it was a two-room central stair house with a three to five-window south front from the early 18th century. A wing was later added on the left at right angles, blocking the left-hand side of the front and creating a new front on its west wall. At about the same time, additional openings were cut into the original rear wall. The building is two storeys plus an attic, featuring a nearly symmetrical west front from the late 18th or early 19th century. The openings are grouped towards the right, with a doorway nearly central to the fenestration. A brick porch with a gable end, built around 1900, has two windows and a top-glazed door on the right-hand side wall.

The windows are taller on the first floor, featuring horned replacement sashes, except for the original 24-pane hornless sash on the first floor left and 16-pane hornless sashes in the closer spaced original hipped roof dormers. The north wall has further hornless 16 and 20-pane sashes and two 2-light casements on the ground floor left, each with one original 18th-century 6-pane light and a mid-floor window on the far left. There is evidence of blocked openings in the original south wall. The interior has not been inspected, but the adjoining garage features some fine resited bolection moulded panelling. This house exhibits a curious development in its plan.