104, Harley Street W1

No. 104 is a terraced town house located on Harley Street, built around 1777 as part of the Portland Estate development, likely designed by John White in collaboration with the plasterer Thomas Collins, who were associates of Sir William Chambers. The building is constructed of stock brick with a channelled stucco ground floor and features a slate roof. It stands five storeys tall with a basement and is three windows wide.

The entrance includes a broad semicircular arched doorway on the right, adorned with Coade stone vermiculated rustications and a head keystone. The door is panelled and flanked by sidelights and a fanlight. The upper floors have recessed sash windows set under flat gauged arches. Architectural details include a plat band and sill band on the first floor, a cornice above the second floor, and a modillioned cornice over the third floor, topped with parapet coping. An early 19th-century cast iron balcony is present on the first floor, along with cast iron plumbed spike area railings.

Inside, the house features a more elaborate interior than typical, including a top-lit stone geometrical staircase with an anthemion wrought iron balustrade, enriched friezes and ceilings, and stucco mythological medallions in the style of Chambers above inlaid marble chimneypieces.