Plas Cwmcynfelin

Medium-sized country house. Coursed rubble stone without quoining, of local Silurian shales, with slated hipped low roofs. Five-window double-pile main with shallow-pitched roofs and painted corniced ashlar parapets. Two W end stone stacks, no chimneys at E end. Two-storeys to S (entrance) front and 3-storeys to rear, N. Openings throughout have stone voussoirs to flat heads and painted slate sills. S front has 1-3-1-bay elevation, the centre slightly recessed, raised ground floor sill band and plinth band, plastic windows replacing 12-pane sashes, except for ground floor right large French window (also replacing an original sash). Central white-painted Classical porch, with square columns and entablature. Wide 6-panel door with 4 glazed panels and 2 fielded panels. Basement with C20 timber windows. E gable end has 3-storey, 3-window range, 2 blank windows with painted glazing bars to first floor, and second floor has one blank window one 12-pane sash and one casement pair. Plinth and sill bands from S front ground floor continue under first floor here and on N front. N elevation is similar in detail to S front, with windows renewed in earlier openings (plastic sashes except ground floor which has C20 timber windows). Paired string courses to first floor. Centre porch with square piers and entablature, glazed sides and front with half-glazed door.

W end crosswing is hipped, dated 1875 on N downpipe but may in fact be earlier C19. 2-storey one-window S end, 5-window W front, 2-storey at S and falling with slope to 3-storey 2-window N end. N has arched ground floor door, corbelled chimney breast central to first and second floors with plastic 12-pane window each side on both floors. W facade has central arched ground floor door with arched window to left, upper floors have tripartite sashes in two bays to left, sashes in 2 bays to right and centre window altered for fire-escape. S end has late C19 timber oriel to ground floor with corniced roof and small-paned top-lights. Small pair of 4-pane sashes above. Truncated chimney to first floor right.

Much original internal detail survives. Fine entrance hall with moulded cornice, dado and tall skirting-boards. Doors are mainly 6-panel with wide architraves. Open stair-well over entrance, with open-string, stick-baluster stair to right. Central corridor to left.