Plas Llysyn

Plas Llysyn is a house divided into three distinct sections: the main house, a service range, and an entrance range. The main house, situated on the west side, features a narrow central bay with projecting gables. A narrower rear range with north- and south-facing gables connects it to the former service range, which faces north. A late 19th-century range runs parallel, with a south-facing entrance front. The building is constructed from random rubble under slate roofs.

The main house is two storeys high, with a single brick stack on the north side. Windows are consistently designed, featuring segmental heads, stone sills, and margin glazing. The west front has three bays, incorporating a porch. The upper storey has cross windows, while the lower storey features three-light windows flanking the porch. The porch itself has a single cross window beneath a chamfered lintel, a raised verge with a finial on moulded kneelers, and a doorway on the north side. The south front has a gable to the right and a smaller gablet to the left, separated from the later entrance range by a butt joint. The upper storey has two cross windows, and the lower storey contains a cross window to the right and an early 20th-century five-light bay window with a transom to the left. The north front mirrors the south front in design. Cross windows are present in the upper storey; on the lower storey, a three-light window sits to the right, and a doorway with stone steps leading up to it – incorporating full-height glazing – is situated to the left.

The service range is double-fronted and gabled, with an attic and two storeys. It has iron-frame lattice glazing, with two-light dormers in the attic. The upper and lower storeys have three-light windows with segmental heads. A single-storey projection of random rubble, with a slate roof and late 20th-century details, extends from the gable end. The entrance range is two storeys high with a centrally placed gablet. The upper storey has three evenly spaced windows with horned sashes. The lower storey features a sash window to the right, an early 20th-century five-light bay window in the centre, and an early 20th-century timber-framed porch on a stone plinth to the left. Horned sash windows are present in the upper and lower storeys of the east gable wall, along with a doorway to the right.

The service range is of two units with a baffle entry. The ground floor has been raised above its original level. The kitchen, on the left, retains two chamfered spine beams, likely from an earlier house, as well as a large fireplace with random rubble baffle walls. The adjacent service room has a bell rack and a blocked doorway leading to the main house. Access to the main house and entrance range was restricted during an inspection in April-June 1996.