Trevanion Farmhouse

Trevanion Farmhouse is a farmhouse that likely dates from the mid-18th century, with extensions made in the early and mid-19th century. The building is constructed of stone rubble and features brick segmental arches over its openings. It has a rag slate roof with a gable end on the left and another gable end for the cross wing on the right. At the rear, there is a parallel range also covered with a slate roof and gable ends. The farmhouse has brick end stacks and a brick axial stack located to the right of the center.

Originally, the farmhouse probably had a two-room plan with a cross or through passage, heated by end stacks. A cross wing was added to the right gable end around the mid-19th century, and a parallel range was constructed across the rear during the same period, creating a double-depth plan. Additionally, a back kitchen was added in a one-room plan wing to the rear left in the mid to late 19th century.

The exterior is two stories high with a regular arrangement of four windows across the front, featuring the gable end of the cross wing on the right. The entrance is located to the right of center and consists of a 19th-century six-panel door beneath a round-arched timber open porch with lattice trellis. To the left of the entrance are two late 19th-century sash windows with margin glazing bars, and to the right is a late 19th-century canted bay window. Above, there are four late 19th-century sash windows with margin glazing bars. The right side features a shallow projecting cross wing with a two-centred arched opening on both the ground and first floors, which includes a 20th-century door with a 19th-century fanlight and a sash window with intersecting glazing bars above it. There is also a blind roundel above this opening. The rear elevation has late 19th-century sash windows.

The interior has not been fully inspected but appears to retain early and mid-19th-century joinery and carpentry details.