117-121, MOUNT STREET W1 (See details for further address information)

This is a terrace of houses and flats with shops, built between 1886 and 1887 by James Trant Smith. It's located on Mount Street and forms part of the 1880s and 1890s rebuilding of the street for the Grosvenor Estate. The building is constructed of red brick with elaborate terracotta dressings and slate roofs. The design is ornate and eclectic, drawing on Queen Anne and Flemish architectural styles.

The terrace is four storeys high with dormered and gabled attics. The ground floor retains mostly original shop fronts, featuring segmented arched display windows grouped together with doorways. These are framed by engaged decorated columns and pilasters that support a continuous entablature with iron cresting. The upper floors have two pairs of canted bay windows on either side of a central bowed oriel window that rises to a shaped gable. At each end of the block are polygonal corner pavilions with domed attics. The windows are mullioned-transomed casements and sashes with glazing bars, set within architraves. Smaller gabled windows and elliptical arched dormers are incorporated into the roof. The building features moulded string and sill courses. The east corner pavilion has additional cast iron balconies and inset busts on each floor. The return elevations are of plain brick. Prominent chimney stacks are a notable feature.