Plas-newydd Hall

Plas-newydd Hall is a two-storey, attic house with an M-shaped roof, built in the 18th century and oriented east-west, facing north. The exterior is rendered, including the chimneys, and features slate roofs. The main section has an irregular bay to the east and a lower wing on the eastern side, which is likely contemporary with the original structure.

The north elevation has five windows, although some details are currently hidden by ivy. The central doorway, dating from the 19th century, features a large bracketed canopy and a semi-glazed door set back behind a small storm porch with outer doors. The windows are 17th-century cross-windows with stone mullions and transoms. Above the eaves, there are three 19th-century flat-roofed dormers, along with two tall end chimneys and one mid-chimney. The additional bay to the left has similar detailing and an end chimney. The west side elevation has three cross-windows on both the ground and first floors, along with two 19th-century attic windows. The rear (south) elevation exhibits a 19th-century character, featuring five bays of large 12-pane hornless sash windows, with the lower ones having a 1:2 proportion and the upper ones slightly shorter. There are also four flat-roofed dormers and an irregular two-bay extension to the right with a slightly lower hipped roof.

The service wing to the east has an irregular shape with two two-storey gables facing north. The right gable features cross-windows with stone mullions and transoms similar to those of the main house, while the window above is a smaller two-light casement window with a single mullion. A large oven projects from the south face of this wing.

The layout of the house underwent significant changes in the 19th century, including the addition of a new staircase in a late Georgian style, complete with a swept handrail, columnar newels, balusters, and bracketed stair ends, located in the northeast corner of the main block, which conflicts with a window. There is a date of 1678 noted internally, along with a moulded chimneypiece in the entrance hall that features a Welsh inscription.