4 Walker Street, Edinburgh

6 Walker Street in Edinburgh is a Grade A listed building designed by Robert Brown between 1822 and 1824. This 12-bay terrace features a cohesive façade of two and three-storey townhouses, each with an attic and basement. The design includes three-bay classical townhouses with main doors and common stair flats located behind them. There are various later additions to the attics, and a slightly advanced corner block to the north that returns to William Street. The basement area includes some vaulted cellars and retaining walls.

The building is constructed from sandstone ashlar, with droved ashlar used for the basement and channelled ashlar for the ground floor. The entrance platts extend over the basements, and there is a banded base course along with a banded cill course at the first floor, separated by a string course between the windows. The eaves are corniced, and the corner features a stepped parapet. The main entrances have timber six-panel doors with plain doorpieces and rectangular fanlights above; No. 4 has radial glazing. The centre of the north corner block has architraved corniced and bracketed openings. First-floor windows are adorned with cast-iron balconies on scrolled brackets, and there is a later box dormer at No. 4.

The north elevation facing William Street is three storeys high with three bays, featuring squared coursed rubble and long and short ashlar quoins, with stone cills and lintels. The ground, first, and second floors each have a single window in the centre.

The rear elevation is four storeys tall and constructed with regular coursed rubble, also featuring long and short ashlar quoins. It has an advanced and recessed wall plane with some later additions, and ashlar rybats, lintels, and sills complement the irregular fenestration, some of which have relieving arches.

The windows are predominantly plate glass in timber sash and case style, with some 12-pane timber sash and case windows. The roof is a double pitch M-section, with wallhead stacks in corniced ashlar and modern clay cans. The building also features cast-iron railings above ashlar coping stone edging the basement recess to the street, complete with spear-headed finials, and cast-iron rainwater goods.