20, Berkeley Street

No. 20 Berkeley Street is a town house, now converted into flats, built around 1770 with 19th and 20th-century alterations. The building is constructed of brick with stone and rendered details, featuring a hipped roof covered with 20th-century cast cement pantiles, roof dormers, and brick stacks. It has a double-depth block design with a short wing at the rear, which was altered in the late 19th century. The entrance hall leads to a staircase on the left.

The exterior consists of two storeys, an attic, and a cellar. The front has four bays that are unevenly spaced across its width. The lower part is rendered with an offset plinth and topped by a moulded string that connects the ground-floor window sills. Above this, the grey brickwork is laid in Flemish bond. A stone crowning cornice with a cyma reversa profile and a rendered parapet sit above. The entrance doorway, located in the second bay from the left, is framed by crude cement-rendered pilasters that replaced the original ones around 1960, along with the original Doric entablature and pediment. The six-panel door features fielded upper panels. All other bays on the ground and first floors have sashes with glazing bars, set in recessed openings with contrasting red brick flat arches and projecting stone sills. There are three flat-roofed dormers in the attic behind the front parapet.

Inside, the staircase is a dog-leg design with a closed string, featuring column newels, stick and column-on-vase balusters, and a ramped, toad back handrail. The rest of the interior has been refitted in the 20th century, but it includes fine fireplaces with ornamental pilasters and friezes. The cellar is walled in brick, except for a section of stone rubble in the southeast corner, which may be part of an earlier building.