78, Dean Street W1

No. 78 Dean Street is a terrace house built around 1730, likely designed by Thomas Richmond. It features stock brick with rubbed brick dressings and a slate roof. The building has three storeys, a basement, and a dormered mansard, with a width of three windows. The doorway on the left is framed by a wooden case of fluted Doric pilasters, with a triglyph frieze above the door and a moulded cornice. The windows are recessed sash types without glazing bars, with pilastered reveals and red brick segmental arches. A moulded brick plat band runs above the ground floor, and the parapet has stone coping. Early 19th-century cast iron spearhead area railings are present.

Inside, the house features a fully panelled interior with box cornices, which are enriched in the ground floor back and first floor front rooms. The hall, likely widened around 1800, is separated from the stairs by a glazed screen with a door, sidelights, and a radial glazed fanlight set between original fluted Doric pilasters. The staircase has a dog leg design with a carved cut string leading to a half landing above the first floor, continuing with a closed string down to the basement. The balusters are urn-based Doric columns, and there are box newels. The front of the building is slightly advanced from the adjacent houses, likely reflecting the original alignment of Dean Street.