Trevenn

Trevenn is a farmhouse, now a house, largely dating from the 17th century, probably around 1650, with a later 17th-century gabled bay added to the front, and subsequent alterations in the 19th and 20th centuries. It is constructed of random slatestone rubble with granite dressings, and has a concrete tiled roof. Two ridge stacks are present; one with a stone cap to the hall fireplace, and a smaller one to the left.

The original plan may have been for three rooms and a through passage, with a lower end to the left, a hall and inner room to the right, and a stair tower to the rear of the hall. The hall stack is located on the ridge, backing onto the passage. The lower wall of the passage has been removed, and both the front and rear doors have been blocked and replaced with windows. The gabled bay to the front likely represents the imposition of what was originally the front entry, initially constructed as a two-storey gabled porch. A gable end stack in the inner room has been removed, while a stack at the lower end was originally gable end, but is now on the ridge following an extension under a hipped roof. An entrance is now located in the two-storey porch to the rear right, leading into the lower end extension.

The front elevation has two storeys and a 2:1:2 window arrangement. The right-hand side features a three-light window at ground floor and two smaller three-light windows at first floor, all with chamfered granite surrounds and 20th-century three-pane lights, with a slate drip stone above the ground floor window. A glazed door with a granite lintel, exhibiting hollow-chamfered detailing and a semi-circular central moulding, is positioned on the left. The front bay has a lower roofline, gabled with a 20th-century three-light casement at ground floor and a chamfered granite casement at first floor, with slate hanging above. The left range has a hipped roof, a front lean-to addition, and two 2-light casements in the gable end. A half-glazed door is on the side, alongside a single 20th-century light and a 3-pane casement under the eaves. A lean-to addition to the left has a 2-light ground floor casement.

The left return has 2-light and 3-light 20th-century casements, while the right return features an external stack without a chimney. The rear elevation incorporates an addition to a former dairy with a pitched roof, originally gabled, with a 4-pane light to the rear and a 2-pane light to the side. The stair tower has a curved wall and incorporates a small 2-light casement at the upper level. The roof steps down at the stack, with a granite lintel over the former door opening, alongside a 2-light casement with chamfered wooden mullions. A rear wing to the end right has a half-glazed door, a 2-light chamfered granite casement above, and a 20th-century door with a granite lintel in the lean-to.

The interior of the central room has a 2-centred arched head over the fireplace in granite. A blocked former door is present to the right, featuring a carved lintel and a recess in the rear wall. This room also has roughly chamfered stop-chamfered spine beams with run-out stops. The room to the end right has a winder stair to the rear in the stair tower, a granite lintel over the fireplace, with an oven to the left, and the former dairy lean-to has slate benches. On the first floor, an end room to the right features a lower half of plasterwork panel with "MEMENTO MORI" moulded, a possible doorframe with a round inset panel at the top of the stair, and the rear passage has two corbels remaining.