Mercer Offices, including Brunswick Health Centre & Douglas-Jones

The Mercer Offices, which include the Brunswick Health Centre and Douglas-Jones, are a terrace of classical houses built in the mid-19th century. Originally arranged as two pairs plus one, the center left block features a later five-light cantilevered Tudor bay that connects the porches. The building stands three stories high, plus an attic and basement, with stucco facades that have two bays linked by single-story porches. It has slate roofs with gabled dormers and central panelled stacks.

The eaves have a cornice and blocking course, with plain pilasters above the main cornice and Corinthian pilasters below. The windows are adorned with architraves and cornices supported by volute brackets on the ground floor. Notably, there is a large later splayed bay that extends through all storeys of No. 148, and a two-storey splayed bay on the left side. Most windows are sash with small-pane glazing, except for Nos. 139, 140, and 147. The side porches feature Ionic columns in antis, with panelled doorcases underneath and steps leading up. The rear of the building has long ranges.