12-18, Brunswick Square

The terrace comprises seven houses at 12-18 Brunswick Square, mostly converted into professional offices and flats. The buildings date to 1825, with later alterations primarily to the interior. They are constructed of stuccoed brick with slate roofs and brick stacks on the party walls. The design is a double-depth block with rear wings, set back from the street with basement areas within small gardens. A lower, recessed entrance bay is positioned on the north side of number 12.

The elevation is three storeys high with semi-basements, except for number 12 which is two storeys and semi-basement. A slight projection distinguishes number 15, the central house in the terrace. Rustication defines the basement and ground floors, capped by a raised band at first-floor level. Above this, a giant order of pilasters supports a deep crowning entablature and coped parapet defining each house front. Number 12 has a raised band at first floor level and a moulded eaves cornice. The ground floor doorway to each house (except for the front entrance bay of number 12) is approached by a stone staircase with wrought-iron balustrades. The doorways have rusticated jambs and semicircular arched heads, featuring decorative metal fanlights and panelled doors. The doorway to number 12 is plainer, with a simple fanlight. Single sashes are positioned to the left of each doorway, aside from number 12 where they are off-centre. The first floor of each house has two sashes, and the second floor two slightly shorter sashes. A single sash is present on the ground floor side return wall of number 12, and a similar sash on the first floor of the side entrance bay, all with 4x3 panes and projecting stone sills. Decorative cast-iron, bow-fronted window guards are fitted to the first-floor sashes on the main front, while the other sashes have projecting stone sills.

Internally, the houses are said to retain original staircases, joinery, moulded plaster cornices to ceilings, and fireplaces.