Plas Penrhyn

Villa-scale Regency country house with sub-medieval origins; 2 storeys. Of stuccoed rubble with double-pile plan, the E wing being primary; slate roofs with end chimneys. The main (W) elevation has 16-pane sashes, three to the first floor and two to the ground floor. Fine full-length Regency verandah returned onto the sides, with hipped slate roof and flat, pierced wrought iron supports (Porthmadog foundry); slate-flagged terrace. The entrance is to the N return, via a part-gazed door with good Georgian fan above; this within the returned verandah. 12-pane sash to the R of the entrance with 16-pane sash to the first floor above, and a blind window to its R. The S return elevation is asymmetrical and has 12- and 16-pane sashes on both floors. The primary range has a near-central entrance to the 3-bay E elevation, with boarded door within simple single-storey porch; 16-pane sashes. Further entrance to the far R with 12-pane sash above and flush lean-to beyond.

The Regency block has an entrance hall with late Victorian geometric tiled floor in buff, brown, red, white and black tiles. A depressed arch divides the entrance hall from the stair well to the rear; this with modern stick-baluster stair, which replaces a lift installed c1960. It is possible that the original main stair occupied this position. Drawing and Dining rooms off to the R, the latter to the rear. Both have 6-panel doors with panelled reveals and convex panelled Regency architraves with applied foliated corner bosses; panelled window reveals and shutters and moulded marginal ceiling plaster. Original wooden Regency chimneypiece to the Dining Room, with surround similar to the architraves, though with additional cable moulding; simple wooden fireplace with engaged colonnettes to the Drawing Room.

The primary range has a stick-baluster stair with mahogany swept rail having columnar balusters; returned first floor balustraded landing. In the former hall (kitchen) is a large fireplace of inglenook type with segmental bresummer and early C19 bracketted mantelshelf; boarded door with contemporary boarded cupboards above. Above the door is an early hanging larder with turned sides and door; an inner plank porch with boarded door gives access to a cellar via a flight of old slate steps. Beamed ceiling with plain lateral ceiling beam and joists.