Agricultural Range and adjoining Garden Walls at Plas-yn-Cefn

The agricultural range at Plas-yn-Cefn is a one-and-a-half storey structure built of rubble with angled gables and stepped parapets, topped with a slate roof. The north side, which faces the main yard, features a two-light ground floor window, a boarded upper loading bay to the right, and a tripartite upper window with an exposed timber lintel. There is a wide boarded door on the west gable, also with an exposed lintel, while the east gable has a deeply-recessed loading bay on the left and a boarded door to the right.

Attached to the southwest is a square three-stage rubble tower, known as the game larder, which has a modern pitched slate roof. This tower includes a wire window on the southeast side of the main stage and a plain modern boarded door on the east, with a two-pane overlight above it.

Further southwest, there is a garden wall made of rubble that stands 3.2 meters high. This wall extends for approximately 15 meters before turning at right angles to the southeast and continuing for another 15 meters. There are entrances on both sides, with the former entrance featuring a reused six-panel door. The southwest side of the wall has brick facing on its inner (garden) face, while the southeast wall is entirely constructed of rubble.