Arthog Hall

Arthog Hall is a house dating from the 18th century, retaining group value as an early example of the Picturesque style. The main front range is built of rubble with a slate roof, featuring a high crenellated parapet that conceals transverse hipped roofs. The facade is symmetrical with five bays, with broad central bay flanked by D-shaped bowed projections. The windows are 12-pane, slightly recessed sash windows with shallow Gothick heads, voussoirs, and labels. A similar head adorns the central first-floor two-light casement window, which has marginal and diamond-pattern glazing bars. A half-glazed double door, set under a later canopy supported by iron, clustered columns, provides access; this formerly led to a porch and balcony.

To the right of the main block is a cross-range connecting to the continuation of the longitudinal rear range. Running at a splayed angle to the southwest is a stepped two-storey service range, partially whitewashed to the ground floor. This service range features a boarded door at the angle with the main block, an open entrance to the right of this with flanking unglazed and modern windows, and a large cart entrance with a concrete lintel. The service range steps down to single-storey to the right, featuring a window and two boarded doors, the rightmost deeply recessed. A new slate roof covers the gable, and a rubble lean-to has a plastic roof. Adjacent to the northwest is a section of stone-capped rubble wall with an open round-arched entrance.

The greater part of the rear, which is seven bays wide, is two-storey with overhanging eaves, and generally contains small-pane sash windows. Steps lead down to recessed central doors and further, later doorways to the right and at the extreme ends, serving as access to cottages named Cader and Diffwys. The entrance to Cader is contained within a lean-to bay to the extreme right; the other two entrances are elevated and accessed by three curved slate steps, with those to Diffwys being original.

The interior suffered extensive fire damage; it formerly included a full-height galleried hall.

Attached to the rear of the service range is a two-storey, two-window cottage constructed of rubble with a slate roof, and a plain end stack to the left with capping and weather coursing. It includes a round-arched entrance with a projecting key and imposts, slate voussoirs, and a boarded stable door with a five-pane semi-circular fan. Four-pane casement windows with round-arched heads, and matching fans to the smaller upper windows, are positioned to the right and above, with a plain fan to the ground floor window, which was formerly an entrance. Cusped bargeboards adorn the southwest gable end, with the eaves cornice returning around that side. A modern porch has been incorporated into the longer rear roof pitch.