An early 19th century lodge or gatehouse, contemporary with the remodelling and expansion of Llynon Hall. It was probably built when the hall was owned by Humphrey Stanley Jones.

A single storey lodge or gatehouse, built to a rectangular plan with a canted bay to the north end overlooking the driveway. It is built of roughly dressed stone, laid to courses and has a slate roof with broadly projecting eaves and verges, hipped to the west and gabled to the east. There are diagonally set, paired, rendered, axial brick stacks with capping. The entrance doorway is offset to the left (North) end of the west wall, and there is a single window to right, both openings with roughly dressed stone heads. The canted bay has 2-light window flanked by single lights, and there is a single window in the east wall. The east gable end has a paired ground floor light and a single small opening in the gable apex above. Most of the windows are blocked.
(Source; Cadw listing database) S Fielding RCAHMW 08/11/2006