Tregonebris Old Manor House, Including Front Garden Walls, Gate-Piers And Gate

Tregonebris Old Manor House is a farmhouse dating from the 17th century, with remodeling in the 18th century and slight extensions in the 19th century. The building features granite rubble walls with granite moorstone dressings, and part of the front has granite ashlar added in the 18th century. The roof is made of scantle slate with gable ends, and there are original or 18th-century dressed granite chimneys at the gable ends. A 19th-century three-stage external granite chimney is located over the rear gable end of the rear wing. A granite kneeler stone, which may be a reused 17th-century window sill or head, is found at the rear of the left-hand gable.

The house has a three-room L-shaped plan that was extended in the 19th century, featuring an outshut behind the left side and a single-storey fuel store behind the original wing, which is behind the right-hand room that served as the original hall or kitchen. The exterior is two storeys high with a nearly symmetrical three-window south front that has 18th-century openings. The entrance features a 19th-century four-panel door with later glazed top panels and 20th-century six-pane horned sashes. Four 17th-century chamfered granite window openings remain in place: one in the left-hand gable end on the first floor (blocked), two on the first floor at either side of the rear wing, and a complete window with a central mullion behind the present stair in the original back wall, which is now a partition wall.

Inside, there is a large granite fireplace in the right-hand room, likely remodeled in the 18th century to include a bread oven behind each jamb, while retaining the original hollow-chamfered and stopped lintel. The floors and joinery date from the 19th or 20th centuries. A rubble garden wall runs along the left side of the front and continues along the road to the farm buildings adjacent to the front garden. The entrance features 19th-century pyramidally-headed granite monolithic gate-piers and a simple wrought-iron gate with an ogee-arched and scroll-headed top rail.