Thorniedean House

This is a 2-storey and attic over basement, 4-bay L-plan villa built around 1868 with later additions. It features a prominent bargeboarded gabled bay and a turret-roofed canted bay. The exterior is made of squared rusticated buff sandstone with smooth ashlar dressings, including a base course and a band course at the first floor level. The southeast wall has a corbelled stack, and the windows on the sides and rear are mullioned and transomed with chamfered surrounds.

On the garden elevation to the southwest, the design is asymmetrical, with a canted bay on the outer left and a 3-storey bargeboarded gable-fronted bay on the outer right, which has chamfered corners and tripartite windows. The dormers are timber-fronted and feature tripartite pediments.

The entrance elevation to the northeast has a projecting ashlar doorway in the re-entrant angle and irregular fenestration, including tripartite and quadripartite mullioned and transomed windows. A prominent stair window is also present, along with a projecting service block on the north corner.

The villa predominantly has plate-glass timber sash and case windows, with some fixed light stained glass windows on the entrance elevation and multi-pane upper lights in the dormers. The roof is covered with purple slate and has clay ridges, with corniced ashlar wallhead stacks and a corbelled projecting stack on the southwest elevation.

Inside, much of the decorative scheme is well-preserved as of 2005. The formal entrance hall is panelled to dado height and features an elaborate canopied timber chimneypiece and a Gothic stair arcade, which is also seen in the upper stair. The balustraded stair has turned balusters and intricate fretwork, with carved foliate newels. A geometric stained glass stair window includes figurative painting. Several rooms retain elaborate plaster cornices, many of which are above later ceilings. The principal dining room has trefoil-headed windows with geometric stained glass, and there are panelled timber doors throughout.

The boundary walls, railings, and gatepiers consist of squared sandstone and whin rubble with ashlar copes. Decorative wrought iron railings are present, along with octagonal gatepiers that have bellcast capstones.