No. 11 And Attached Railings

This is a four-storey and basement house, likely built around 1786, and later altered in the late 19th and 20th centuries. It is attributed to John Palmer and developed alongside Portland Place. The front of the house is faced with limestone ashlar, while the rear is a mix of ashlar and rubble. It has a Welsh slate roof, coped party walls, and two ashlar stacks with some original clay pots on the right side. A staircase is located at the rear.

The front elevation has a single bay with a tripartite-window arrangement. The first floor has three plate glass sash windows with horns, these are narrower on the left and right. The second floor mirrors this arrangement but with splayed reveals, a continuous 19th-century timber blind box, and also features plate glass horns. The third floor has two plate glass sash windows in plain reveals with stone sills and a 19th-century timber blind box. The ground floor has two plate glass sash windows on the right in splayed reveals with a continuous stone sill and a 19th-century cast iron balconette. To the left is an eight-panel door with a single glazed panel at the top and a 19th-century painted knocker. A single step leads to a crossover paved with 19th-century encaustic tiles, which also includes a 19th-century cast iron footscraper. The basement has two plate glass sashes. A 20th-century door is located beneath the crossover, and there are 20th-century area steps. The exterior features weathered sill bands to the first and second floors, a moulded cornice over the second floor, a small coved eaves cornice, a coped parapet, and a lead hopperhead at the eaves on the left. The rear elevation is characterized by plate glass sash windows. A one-and-a-half-storey ashlar extension off the staircase includes a sash window with coloured glass borders on the first half landing. The interior has not been inspected.

Attached to the front are wrought iron railings and a gate with cast urn tops and finials, missing on the right, and set on limestone bases. A damaged 19th-century trellis screen is attached to the right, adjacent to the front door of number 10. The house's development was linked to Portland Place and involved complex land transactions and building leases dating back to 1782.