111 and 113, Harley Street W1

Nos. 111 and 113 Harley Street are terraced townhouses 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 houses are constructed of stock brick with channelled stucco ground floors and feature slate roofs. They rise four storeys, with a basement and dormered mansards, and have three-window wide fronts.

The broad semicircular arched doorways on the left are made of Coade stone with vermiculated surrounds and head keystones. Each doorway has panelled doors, entablatured and framed side lights, recessed doorheads, and fanlights, creating a Venetian window composition. The upper floors of No. 113 have recessed sashes under flat gauged arches, while No. 111 features stucco architraves and pediments on the first floor. There is a first-floor plat band, with No. 111 having a coped parapet and No. 113 displaying a stucco cornice and blocking course.

Both houses have continuous cast iron bombé balconies from around 1840 on the first floor and cast iron area railings with urn finials. The interiors have been altered; No. 113 has a plain staircase, while No. 111 retains a top-lit stone geometrical staircase with a wrought iron balustrade and inlaid marble chimneypieces, showcasing features typical of high-quality speculative houses from the 1770s in Harley Street.