Castellau Ganol

Castellau Ganol is a long, one-and-a-half-storey range of buildings facing east, with a house situated at the uphill end. The building is constructed from whitened rubble stone, covered by a slate roof, with the former cow house section having a corrugated iron roof. A stone stack is present at the north end, while the centre and left side have rendered stacks. The downhill end rests on substantial stone footings.

The current entrance, to the right of the centre, leads into the hall. It features a flat head constructed of narrow voussoirs, with a late 20th-century half-glazed door. This is flanked by three-light, multi-pane wooden casement windows with splayed reveals beneath dripstones. To the far right is a smaller window in a similar style, originally featuring mullions set diagonally. To the left, an enlarged window is set within a flat brick head, replacing the original doorway into the cow house, and now serving as a parlour. The upper storey has three windows under the eaves, all two-light, multi-pane wooden casements. The left-hand window is larger and sits above the original doorway, while the others are irregularly placed.

The cow house section has an entrance with stable doors to the right, and an opening immediately above containing a cross window, likely originally a loft door. Both have renewed jambs. A ventilation slit is located to the left. The south gable end is slightly battered and has no openings.

At the rear, a staircase outshut is positioned left of centre, featuring a small, 20th-century-glazed window to the front. To the left is a large, 20th-century kitchen lean-to, with a space between the two projections providing access to the kitchen door. To the right of the staircase outshut is a small, late 20th-century lean-to, containing the original rear doorway into the cow house, now a parlour. The cow house section has a planked door to the right and a three-light casement window to the left, both with renewed jambs.

The hall and inner room are open-plan. Three deep, chamfered cross beams with run-out stops are visible, with part of the central beam displaying a deep slit marking the location of an early partition, which would have formed a very narrow hall. This partition was later moved north, and the inner room used as a dairy. The north beam is now boxed in, and no original features remain in the former inner room. The hall contains a large fireplace in the south wall, featuring a slightly cambered and chamfered timber lintel. Inside, to the right, is a brick bake oven. To the west is a stone staircase projecting outwards, while to the left of the fireplace is the original doorway from the cow house, now a narrow parlour. A cobbled floor was discovered here, and a doorway to the west, now leading into a small lean-to, formed the original rear access into the long house. The remaining part of the cow house is currently used as a store room and was not entered during inspection.

A corridor runs along the west side of the attic storey. The north room is entered through a timber doorway with an ornate head. A small doorway in the northeast corner of the room leads to loft stairs. The attic storey above the cow house is said to contain trusses marked with carpenter's marks numbered 1 to 3, and a wall-plate tie beam, a rare feature found only in this area.