Treble Hill

Treble Hill is a building constructed of rubble stone, which was formerly rendered, and features a slate roof. Originally built as a two-storey structure with cellars, it was later raised to three storeys. The building has three bays and a double-pile plan. Access is gained via eight steps leading to the central entrance, which has margin glazed doors set within a rounded headed panelled doorcase and a fanlight with curved glazing bars. A modillion cornice adorns the top of the entrance.

On the ground floor, there are tripartite 12-paned sash windows on either side of the entrance, divided by columns and square imposts with fluted caps, all framed within a wide three-centred stone arch. The first floor features 12-pane sash windows, while the second floor has 6-pane sash windows with brick reveals. The building has wide boxed eaves and a hipped roof, with a string course at the base of the southwest gable chimney, marking the original roof level.

At the rear, there is a two-storey wing attached to the northeast side, and an additional structure at right angles behind the southwest side, which is a glasshouse designed by Messenger & Co., likely dating from the late 19th century or early 20th century.

Inside, the central through hall features a modillioned cornice and a ceiling rose. There is a door leading through the spine wall to the rear section, which has been widened to accommodate a fine dog leg stair with bracketed treads and a wreathed handrail. A wide four-centred arch separates the front and back rooms, although this arch is now blocked.