6, Mount Beacon

This is a house, probably originally two houses to the left of an irregular terrace, built around 1796, with extensions added in the late 19th century. It is constructed of limestone ashlar with a slate roof and chimneys on the right side. The plan is a double-depth design.

The exterior is four storeys high, including an attic storey (which may have been added later), with a semi-basement, and features a four-window front. The original 18th-century building had a low, coped parapet, a platband below the attic, and a narrow decorative string course over the second-floor windows. The front of the basement has chamfered rustication, while moulded arrises to painted recessed panels create the appearance of forward frames for the six/six-pane sash windows. Some windows have crown glass. A platband and decorative string course run along the front, rear, and left return. There is a semi-elliptical bay window on the rear left side, with six/six-pane sash windows on the second floor, an eight/eight-pane sash on the first floor, an eight/twelve-pane sash on the raised ground floor, and a smaller window in the basement. The former entrances were likely in the returns. Later 19th-century additions include two timber canted bays on the attic storey, which cut through the former sill band with cornices and consoles flanked by paterae friezes. The lower ground floor has two/three-pane sash windows. Steps lead up to an enclosed two-storey lean-to porch covering the lower ground and ground floors, featuring a hipped roof, panelled pilasters with circular detailing, and a segmental pediment to the front. The left return has paired and triple semicircular arched windows. The original back door has raised and fielded panels, glazed at the top, and radial glazing bars to a semicircular fanlight.

The rear left parapet, cornice, and platband continue around a projecting range, with a full-height semi-elliptical bay featuring a six/six-pane sash window on the attic storey and early 19th-century flat eight/eight-pane sashes below. A three-storey rectangular lobby from the early 19th century was installed when the interior staircase was moved. A two-storey canted bay, with a hipped roof and two/four-pane sash windows, is located on the right side, with a wall of coursed rubblestone behind.

Inside, a wide segmental arch in the center of the hall cuts through a thick wall, suggesting it was once a party wall. Original features include 1796 decorative cornices, panelled shutters, moulded architraves, and six-panel doors. The room in the semi-elliptical bay has a white marble fire surround.