50, Harley Street W1

No. 50 Harley Street is a terraced town house built around 1770-1780 as part of the Portland Estate development. The building is constructed of stock brick with a channelled stucco ground floor and features a slate roof. It has four storeys, a basement, and a dormered mansard, with three windows across the front.

To the right, there is a semicircular arched doorway framed by pilasters and topped with a cornice; the door is panelled and has a fanlight above it. The upper floors have recessed sash windows that sit under flat gauged arches. The stuccowork is finished with a plat band at the first floor level, and there is a parapet with stone coping.

A mid-19th century cast iron balcony with foliated brackets is located on the first floor, and the area railings are made of cast iron with twisted and plumbed spike finials. Inside, the house features a top-lit stone geometrical staircase with wrought iron balusters, along with some delicate frieze and ceiling mouldings.