Upper Cwm-y-ddalfa

Timber framing of small square panels, refurbished and coated with pebbledash, and applied on vertical lathing over weatherboarding on the SW end. Slate roof with brick axial and end wall stacks. The windows and doors were replaced in the 1940-1950's. Central gabled open porch over part-glazed door. Metal windows, and timber casement windows to the upper floor, and 18-pane sashes to E front of the wing. The gable end of the wing is jettied, and has prominent datestone reading G E H / 1736. Very large external stone stack with offsets at N end of main range which has small lean-to at rear.

Lobby leads to living room to left (S) and service room to right. Most interior framing, panelling and detail present but now covered up. Divided stair, probably inserted in C18, with simple stick balustrade. Ceiling joists chamfered, some with pyramid stops, and supported on chamfered posts of unknown date in the hall and service room. Very large open fireplace, in service room with oven. The W room of the wing is said to be panelled under the present finishes.