Plas Newydd

Plas Newydd is a house dating from the 18th century. It consists of a main range with a central, two-storey porch projecting forward, and an offset rear wing with a lean-to addition in the southwest corner. The house is constructed of local rubble masonry with limestone dressings, and has a modern slate roof with tall gable stacks and a lateral, shouldered stack to the rear of the porch.

The principal elevation faces north towards the coast. The main entrance is within the two-storey porch, which has a label (a projecting moulding) over the flat-arched doorway and a small window above. A datestone is positioned between the two windows of the porch, and a gable stack sits at the apex. A narrow window is set in the east wall of the porch, with a stone lintel and slate sill. To the right of the porch on the main range is a ground floor window with a flat, stepped head (voussoir head), and a first-floor casement window of three lights set directly under the eaves. The east return has an enlarged first-floor window with a label, while the south return has a doorway on the right-hand side. The rear of the house has casement windows on the west end, including a three-light first-floor window and a single-light window below.

The rear wing features a single ground floor window along the east wall and a first-floor window in the south gable, both with a label. A similar window is present in the lean-to addition, which has two casement windows of two lights along the west wall.

Inside, the house has a central hallway leading to the principal rooms and to the rear wing. A lateral corridor runs along the rear of the main range, leading to a back door and the lean-to addition, which was formerly used as a dairy and scullery. The interior has been modernised but retains exposed beams and joists in the ground floor rooms. These include massive, chamfered beams, some with roll-moulded angles. The dining room has a massive, chamfered bressumer (a large beam) above the inglenook fireplace, and other fireplaces throughout the house have massive stone lintels. The small room over the porch is said to contain a shaped stone lintel, possibly a reset mullion (a mullion is a vertical bar between window panes). The roof has been renewed, but retains some parts of older pegged trusses; most purlins have been replaced, with the pair over the porch being original oak. The inner doorway to the porch is a round-headed arch.