Cwmannog Farmhouse AKA Gymmannog

Cwmannog Farmhouse, also known as Gymmannog, is an early 17th-century farmhouse of the inside cross-passage type. A later 17th-century service wing to the rear creates a T-shaped plan, with an 18th-century single-storey brew/wash house addition at the southeast corner. The farmhouse is constructed of rubble with boulder foundations, featuring pebble-dashed main and gable faces. It has a slate roof with rubble end chimneys, the one to the right (formerly the hall) being larger than the one to the rear service wing. The roof also has plain capping and weathercoursing.

The front elevation has two windows and an off-centre entrance to the left, which is stepped up and has an original boarded and studded oak door within a contemporary pegged frame. Recessed late 19th-century sash windows flank the entrance on both floors; the ground floor windows have a 2-pane arrangement over 3, while those on the first floor are of a conventional design, placed under the eaves. A further sash window is found on the first floor of the West gable. Modern windows are present on both floors to the rear, fitted into primary openings and featuring pronounced projecting lintels and cills. The service wing to the rear is a single storey and built into the hillside. This wing has a 19th-century 4-pane sash within a late 17th-century gabled dormer facing east, and a later 2-pane window to the ground floor west.

The wash/brew-house adjoins the main block at a right angle, partially overlapping it to the right. It is constructed similarly, featuring a steeply-pitched roof continued to the east as a catslide over a later outshut. A tall, rendered stack is located on the southeast gable. The main (farm) side of the wash/brew-house has a central boarded door, flanked by small 4-pane sashes, with a matching arrangement at the rear, though these are now modern replacements.

Original hinge posts and block arrangements are present at the door. There's a crude, later 17th-century oak inner porch. While partitions have been replaced, with the one dividing the former hall (to the right) moved forward, the cross-passage arrangement remains evident, and the original entrance survives, featuring a Tudor-arched doorhead and contemporary pegged oak frame. This now leads into the rear service wing. An early 19th-century plain stick-baluster stair is located in the former passage. Boarded partitions are present in the hall and former parlour. The parlour has a plastered ceiling and a 20th-century fireplace. The hall features a heavy beamed ceiling with stopped-chamfered beams and joists, and a wide fireplace with a bressummer. A mural winding stair is known to have existed to the left of the fireplace, but it has been plastered over. The ground floor room of the rear service wing also possesses crudely stopped-chamfered beams and a wide fireplace with a bressummer. The roof is a 4-bay structure with pegged, chamfered trusses of tie-beam and struts type.