Plas Gwyn

Plas Gwyn is a two-and-a-half storey, three-bay house, likely dating from the 18th century. It is constructed of coursed rubble masonry with a steeply pitched slate roof, plain eaves, and close verges. Tall, square stone stacks topped with moulded caps and water tabling rise from the roof. Three gabled stone dormers, featuring close verges, slate-hung gables, and cheeks, are set into the top storey. The windows are primarily small twelve-pane horned sash windows with stone sills, although a window to the right has been blocked. A canted Victorian bay window with a hipped slate roof is on the ground floor to the left, while a more recent window replaces an original opening to the right. The central doorway formerly had a Tuscan pedimented porch, which has since been lost. A modern wrought iron door surround in an 18th-century style frames a six-panel door with a diamond and sidebar glazed rectangular fanlight, the door surround featuring a cement architrave.

The rear elevation has two twelve-pane sash windows centrally placed to illuminate a stairwell, complete with stone lintels and sills. A later slate-hung gabled dormer is to the left. A large twelve-pane early 19th-century sash window was inserted on the first floor left, corresponding with a blocked window on the front elevation; it has a deep stone lintel and sill. A small pane French window is located on the ground floor below, and a small, later 19th-century four-pane window is on the first floor to the right.

Attached at a right angle to the main house, and partly clasping the northeast corner, is a probable 18th-century, single-storey, one-window service wing. This is also of rubble masonry with a steeply pitched slate roof, close verges, and plain eaves. It has a tall stone stack with water tabling, a doorway on the left, and a window on the right. A gabled dormer with a slate-hung gable is on the left, and two further gabled outshuts step down to the east. These outshuts are of rubble masonry with slate roofs and feature stone lintels and boarded doors.

Inside, a very fine contemporary broad oak staircase of four flights is a notable feature. It has tall, slender turned balusters (three to each tread), scrolled newels, and a toad's back moulded handrail that sweeps up at the half landings. A stone staircase descends to the cellar. Six-panel doors with moulded architraves are throughout the house, and panelled shutters are set into the window reveals. The main ground floor room to the right has a coved ceiling finished with a thin reeded cornice. In the room to the first floor left, early 19th-century reeded torus door and window architraves are present. A dowel pin concealed door leads to a servant's loft over the kitchen within the rear extension. Similar early 19th-century detailing is also found in the room on the first floor to the right. The kitchen has a heavy transverse ceiling beam supporting the joists. A service stair is located to the left, and the room features a collared truss.