23, 25, 27, 29 Blackfriars Street, Edinburgh

23, 25, 27, and 29 Blackfriars Street in Edinburgh is a four-storey and attic tenement building, designed by David Clunas in 1870-71, based on a design by David Cousin and John Lessels. This retail and residential structure is located on a prominent corner site and is part of a continuous row on the east side of Blackfriars Street. The building features squared, coursed rubble with stugged sandstone dressings and chamfered window margins.

The ground floor accommodates shops, and there is a two-leaf timber door at the canted southwest angle bay, which is corbelled out over the door. Above this, a projecting ashlar corbelled canted bay leads to a corbelled oriel window on the second floor. A moulded cill course is present at the third storey. The roofline is broken by an irregular arrangement of dormers, including two with two-storey wall head gables and one with lugged, crow-stepped pediment dormers. The attic features timber, pedimented dormers set within the pitch of the roof.

The south elevation displays a broad crow-stepped gable, with an additional two-storey wall head gable to the right. The building's windows are timber sash and case with four-pane glazing, and it is topped with graded grey Scottish slate. Broad coped ashlar stacks and clay cans are present, along with cast-iron rainwater goods.