Bosillian Farmhouse

Bosillian Farmhouse is a farmhouse, now a house, likely built around 1700, with alterations and additions from the early 19th century and some later changes. It is constructed of slatestone rubble and cob, with the front rendered. The roof is made of asbestos slate with ridge tiles and gable ends. There are two gable end stacks, one with a brick shaft on the right and the other with a large rubble shaft and slate weathering on the left. The building was formerly thatched.

The farmhouse has a two-room plan, with each room nearly equal in size and heated from a gable end stack. The central entrance may have originally led to an unheated room, which now contains a stair and a small pantry at the rear. A single-storey outshut, likely added in the early 19th century, is located at the rear left and serves as a kitchen, heated from a stack on the left side.

The exterior is two storeys high with a nearly symmetrical three-window front. The ground floor features a 19th-century six-panelled door, with a 20-pane sash window to the right and left. The first floor has similar 20-pane sashes on the right and left, with a later 19th-century nine-pane sash in the centre. There is a large external stack at the left end, accompanied by a small single-storey 20th-century addition. A straight joint in the masonry indicates the connection to the outshut on the left, which is single-storey with a loft above. The rear of the outshut is painted and includes a plank stable-type door and a 20th-century two-light six-pane casement; the inner side has a single four-pane casement for the loft. The right end is roughcast at the upper level, featuring an external stack. The rear of the main range has a single light at ground floor for the pantry, with a 19th-century 20-pane sash above that lights the stair. There is a 20th-century window on the first floor to the left.

Inside, the front rooms have 19th-century four-panelled doors, both of which are ceiled. The room on the right has a 19th-century chimneypiece, and the front windows have splayed reveals. The stair divides to the right and left at the first floor. The pantry, located under the staircase, has roughly hewn beams. The roof is not accessible.