Llandefaelog House

Llandefaelog House is a two-storey house built of rubble stone, featuring slate flat-eaved hipped roofs. The south front has three bays and is highlighted by a large external stone chimney at the west end. It has a raised plinth and three 12-pane sash windows on the first floor. The ground floor includes a long sash window with 19th-century marginal glazing bars to the left, a long 24-pane sash window to the right, and a central door set in a 19th-century timber doorcase with pilasters and a cornice, featuring double panelled doors and a large rectangular overlight. The windows have stone sills and stone voussoirs, with the right window on the first floor showing signs of having been narrowed.

The east front features two broad shallow bows with roofs that curve outwards, each adorned with 19th-century tripartite long windows and full-length casements with sidelights. The lower windows also include narrow top-lights. Stone sills are present, and the left windows have stone voussoirs, while red brick is used between and above the right windows. The north end has an external chimney breast without a stack and one first-floor window to the right in a brick surround. The projecting east side of the west range has a broad 16-pane sash window below with a brick cambered head and a 12-pane sash window above with stone voussoirs. There is an eroded 17th-century purple stone plaque to the right, dated 1639, and a small inserted 20th-century window to the first floor left. The north gable end, which may be missing a chimney, has a 6-pane attic window with stone voussoirs and a first-floor 4-pane sash window with a brick surround.

The long west side features a large external chimney to the right (on the end of the south front), scattered fenestration, and two catslide dormers towards the left. There is an attached 19th-century single-storey lean-to on the ground floor left, with a roof hipped at the southwest angle and two brick-sided windows facing west.

Inside, the house displays late Georgian details, including an inner half-glazed door leading to a narrow hall with a stair to the right. The stair features a reeded rail, square balusters, and scrolled tread ends. The doorcases are reeded with roundels at the top angles, and there are panelled shutters.