Stable Range at Plas-yn-Llan including adjoining Carthouse complex

The Stable Range at Plas-yn-Llan, which includes an adjoining Carthouse complex, is a long, two-storey building constructed from rubble and topped with a continuous slate roof. The tack room section features two windows and is square and symmetrical, with a raised ground floor above a cellar. Access to the cellar is provided by a flight of sandstone steps at the right gable end. The central entrance is approached via six segmental sandstone steps and features an original pegged oak doorcase with a contemporary boarded door and simply-decorated iron hinges. On either side of the entrance are tall, elegant cross windows made of pegged oak, which have modern wooden bars. Above these windows, under the eaves, are original two-light wooden mullioned windows.

To the left, between the tack room and the stable section, there is a single bay infill section that has a reduced entrance and an exposed timber lintel. The stable section itself has three equally spaced stable doors, each with 15-pane overlights. Above these doors, under the eaves, are fixed windows, also with 15 panes. These openings date from around 1946. There is further access at the left gable end, as well as a former loading bay that has been reduced to a ventilation slit. Two first-floor boarded doors with pegged frames are located at the raised rear.

Adjoining to the south is a low 19th-century L-shaped carthouse addition, arranged around a quadrangular court at the side and rear of the stable block. This addition is also made of rubble, with old slate roofs and tiled ridges. The southeast arm features a wide cart entrance with a segmental brick arch and stone key, along with two plain cart openings to the right. The north arm has two additional segmental arched entrances, similar to the southeast arm, with the eastern one partly collapsed.

Inside, the tack room section has a largely contemporary plaster finish, with wide splays to the windows and chamfered inner faces to the mullions and transoms. The lateral ceiling beams are ogee-stopped-chamfered, and the joists are plain, originally plastered over. The stable section consists of five bays with a tall ceiling and similar beams. A later rubble partition wall bisects the fourth bay. The roof, dating from the mid-19th century, features bolted roof trusses.