Plas Nant y Glyn (excluding C20 W Range)

Plas Nant y Glyn is a late Georgian house, originally built in the late 18th century, which was altered and extended in the mid-19th century. The roof is shallow-pitched slate, with plain end chimneys, the right-hand one being rendered. Shaped stone kneelers are present on the gable ends. The construction is of roughly dressed rubble. The front facade is symmetrical and features two windows per floor. Ground-floor windows are 12-pane near-flush sashes, while first-floor windows are 9-pane sashes. The windows have flat dressed lintels and projecting stone cills. A single-storey central porch has stepped access, flanked by Tuscan columns and a parapet incorporating two sections of moulded crenellation and a Gothic crocketted finial, all of which are re-used materials apparently sourced from Plas Onn around 1966, according to the owner. The main entrance is a six-panelled door, with the upper four panels raised and fielded, leading to a deeply recessed inner door with a simply-glazed upper section.

At the rear, a two-storey modern projection in a vernacular Gothic style features a re-used date shield inscribed with 1856. The rear also includes a brick porch with a modern door, a cambered-headed stable door, and a modern glazed conservatory that runs the length of the facade. To the right of the front facade (the north face) is a single-storey lean-to with a slate roof, adjoining a modern curved stone wall that runs flush with the facade and sweeps forward to partly enclose the forecourt.

A large, gabled, two-storey wing adjoins the main range to the north. It was constructed in the mid-19th century using rubble and brick detailing, and has a slate roof with a plain brick end chimney. The wing contains 4 and 6-pane sash windows, with those in the gable end having brick cambered heads. A further gabled range from the 1820s (originally stables) is set back, adjoining this wing to the west. This range has cement coping to the gables and reduced end chimneys. It has modern fenestration and a central modern porch entrance. An in situ date shield at first-floor level displays the date 1857. The rear of this section was refaced around 1948 and given mock machicolations and a parapet.

The ground floor rooms retain six-panelled doors and window shuttering. Inside, an early 19th-century dog-leg staircase has a swept mahogany rail, columnar newels, and stick balusters.