115, Harley Street W1

No. 115 Harley Street is a terraced town house 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 features stock brick construction with a channelled stucco ground floor and a slate roof. It has four storeys, a basement, and a dormered mansard, with three windows across the front.

The entrance is marked by a broad semicircular arched doorway to the left, framed in Coade stone with a vermiculated surround and a head keystone. The door has panelled side lights with entablatures, a recessed doorhead, and is topped by a fanlight, creating a Venetian window effect. The upper floors have recessed sash windows under flat gauged arches, with a plat band on the first floor. The parapet is topped with coping, and there is a cast iron bombé balcony from around 1840 across the first floor, along with cast iron area railings featuring plumbed spike finials.

Inside, the house boasts a fine interior typical of high-quality speculative houses from the 1770s on Harley Street, with enhancements above the usual standards. It includes an arched hallway and a top-lit stone geometrical staircase with a lyre-scroll wrought iron balustrade and a skylight drum adorned with swag ornamentation. The plasterwork features friezes and ceilings decorated with flute, patera, wreath, and garland motifs. There are stucco mythological relief medallions, reminiscent of Chambers' style, framed by garlands above principal inlaid statuary marble chimneypieces, along with enriched shutter panels and mahogany doors.