Trewallter Fawr Farmhouse

Trewallter Fawr Farmhouse is a two-storey farmhouse dating from the 17th century, set behind a low boundary wall. It has four bays and distinctive red colour-washed elevations. The roof is slate, with three ashlar stacks – two gable and one axial. The ground floor features four two-light sunk chamfered mullioned windows with hollow chamfered hoodmoulds. These windows are of 17th-century date. The original door is set within an ashlar door surround, featuring plain chamfer with straight-cut stops beneath a hoodmould. The first floor has three two-light mullioned windows. The rear elevation includes four two-light mullions on the ground floor, and a single stair light at an intermediate floor level beneath the central stack. The first floor has three two-light mullions and a single square-headed light at the far western end. A later single-storey, round-ended lean-to has been added to the western end, featuring modern windows. A former one-and-a-half-story kitchen, possibly used as a forge, is now linked at ground-floor level with a lean-to conservatory on the west elevation. A substantial gable stack stands at the west end, with small lights flanking the stack.

The farmhouse is a two-unit, lobby entry house. The western hall contains a substantial rubble fire on the west gable, with a cross cornerstone stair on the north side. The fire retains its original chamfered timber bressumer and an early stone oven in the north jamb, set beneath the stair. The jamb in front of the oven has been rebuilt in brick and now contains a Victorian oven. Surviving features include a 17th-century wrought iron chimney pot-crane and a 17th/18th-century mechanical spit winder, both set above the bressumer. The floor is of flagstone, and four exposed beams with medium chamfers are present. Window sills are made of polished limestone slabs, with reeding to the upper face, one bearing an inscription. The east parlour cell has a shallow fire at the western end, with a built-in settle to the north side. Doorways have distinctive dressed stone jambs with an inscribed criss-cross pattern and projected knots. A cross-corner stair is located to the south side of the fire, featuring an 18th-century raised and fielded elm panelled door. Four exposed beams with medium chamfers and ogee stops are also present, along with a simple reeded border to the plaster ceiling. A door between the hall and parlour matches the stair door. The first-floor plan mirrors the ground floor, with the chamber over the hall subdivided into three sections, including a corridor on the north side. The principal chamber over the parlour has an open fire with a corbelled bressumer at the east end. The parlour staircase leads to the principal east chamber and an ancillary room to the west.

A surviving stone stile is located to the west side of the house. It incorporates dressed stone work similar to that found on the parlour fireplace.