27-35 Portland Place

27 to 35 Portland Place is a group of large terraced townhouses built between 1776 and around 1780 by James Adam, along with his brothers and John Elwes, as a speculative development on a Portland Estate lease. The buildings are constructed of stock brick with stucco ground floors and feature slate roofs. They are designed as part of a symmetrical block alongside Nos 41 to 47.

The houses rise four storeys, including added attic storeys, and are set over basements. Each house has a three-window-wide front, with the first two bays being blind in the return to New Cavendish Street, where the entrance is located. The broad semicircular arched doorways have panelled double doors, sidelights, and fanlights above, all topped with ram's head cornice doorheads. No 35 features a mid-19th century segmental vaulted covered way on cast iron posts extending to the pavement. The entrance on New Cavendish Street includes a Doric columned stucco porch with a dentil cornice and an iron balustrade above. The upper floors have recessed sash windows under flat gauged arches, and there is a plat band finishing the ground floor stonework. A moulded stucco band runs over the first floor, with a main cornice above the second floor and a secondary cornice with a blocking course at the attic level. No 35 also has a mid-19th century barrel-roofed, glazed-in, arcaded verandah, and all the houses have cast iron Grecian or mid-19th century balconies on the first floor. The area railings are made of cast iron and feature plumbed spike finials.

Inside, the houses retain fine Adam interior features, including delicate plasterwork, some inset panels and medallions, stone geometrical staircases with wrought iron balustrades, and statuary marble chimneypieces.