20, 21, 22, 23, 24, 25 Rothesay Terrace, Edinburgh

20, 21, 22, 23, 24, 25 Rothesay Terrace is a tenement block built between 1906 and 1907 by R H Watherston and A Craig of J. Watherston and Sons. This five-storey building, with a basement and six storeys at the rear, features an irregular plan and is designed in a plain classical style. It is situated at a corner on a steeply sloping site, with slightly advanced sections from the terrace line to the east and angled corner bays.

The exterior is constructed of sandstone ashlar, with a channelled ground floor and a banded base course. There is a moulded cill course at the ground, first, and second floors, and a deep corniced cill course at the fourth floor. The building has a corniced eaves course and full-height, three-light corniced canted bays, along with bipartite architraved windows on the south side and full-height bowed bays on the west side.

On the west elevation, which faces Douglas Gardens, there is an advanced section to the left with full-height bowed bays and rectangular tripartite bays to the far left. A prominent stone parapet with a cast-iron lamp is located to the right, leading to a doorway in the re-entrant angle. The fenestration is regular, and there is a prominent wallhead stack to the far right.

The windows predominantly feature plate glass in timber sash and case frames, with some larger windows having plate glass over two-pane timber casements. The bowed glazing is present in the bays on the west elevation. The roof is a double pitch M-section design with a corniced ashlar ridge parapet and gable end stacks fitted with modern clay cans. The south elevation has cast-iron railings on ashlar coping stone edging the basement recess to the street, along with cast-iron rainwater goods.

Inside, the building includes lift access to the flats.