70 Northumberland Street, Edinburgh

70 Northumberland Street in Edinburgh is an early 19th-century terraced tenement designed by Robert Reid and William Sibbald. The building is three stories high with a basement and features five bays. It is constructed from broached ashlar sandstone, with V-jointed rustication on the principal floor. The design includes a base course, band courses between the basement and principal floor, as well as between the principal and first floors, and cill courses at the first and second floors. A cornice and blocking course are present at the second floor, and there are ashlar steps and entrance platts that extend over the basement.

On the northern (principal) elevation, there is a round-arched doorpiece at the center of the principal floor, which features a nine-panelled timber door with glazed upper panels and a radial semicircular fanlight. The remaining bays on the principal floor and the floors above have regular fenestration, including the basement.

The eastern elevation has a blank coursed rubble gable and a three-storey, two-bay addition on the left, which has regular fenestration on all floors. There is also a later rendered addition adjoining to the south.

The western elevation adjoins another terrace, which is listed separately as 19 and 19B Howe Street. The building has 12-pane timber sash and case windows, a grey slate M-roof, and cast-iron rainwater goods. There is a rendered gablehead stack that is coped and features circular cans.

The interiors were not seen in 1997, but there is some evidence of working panelled shutters. The property is also adorned with ashlar copes topped by cast-iron railings with balusters and finals, along with a cast-iron lamp mounted on the railings that has a glass globe.