Castle House

Castle House is a Georgian three-storey, three-bay house and shop, featuring scribed roughcast walls and a hipped slate roof with moulded eaves. The High Street side showcases the original bay structure in the middle and upper storeys, with shallow full-height canted bays on the left and right, and a narrow window in the centre. These openings have been replaced with casement windows. Between the middle and upper storeys is a late 19th-century inscription in raised letters stating, "Estd 1735, Castle House." The lower storey is topped by a deep moulded cornice with a boarded soffit, added during the late 19th century when the building was converted into shops.

On the left side, there is a double shop window with wooden glazing bars and panelled pilasters. To the right of this window is a swinging cast iron crane. The central doorway features double panelled doors with panelled pilasters. Immediately to the right of this doorway is another entrance, accessed by stone steps, which has a panelled door and a small-pane overlight. The canted bay at the right end contains a 12-pane hornless sash window.

The Castle Street elevation has a single window that retains original openings in the middle and upper storeys. The first floor features a Palladian window with small-pane casements that have replaced earlier sashes, and similar windows above with painted outer frames. Between the middle and upper storeys is a late 19th-century inscription reading "RH Thomas." The lower-storey shop front includes panelled pilasters and a deep cornice over the fascia. A four-light shop window has thin wooden mullions, with the right-hand light splayed towards the recessed doorway. The stall board has been rendered, and the doorway features a half-lit panelled door with etched glass panels and a two-pane overlight.

Although not inspected, it is reported by RCAHM Wales that Castle House has a complex early 18th-century staircase with slender turned balusters, moulded only at the heads and feet, and columns of similar design supporting a four-bay landing arcade, with one spandrel and a capital being pendant. A first-floor room is noted to have "curious decoration."