No 3 Rock Terrace including railings

No 3 Rock Terrace, which includes railings, is the right-hand house of a pair built in painted stucco and features a slate close-eaved roof with large brick end wall chimneys, each topped with 18 chimney pots. The facade has three storeys and two bays, with the stucco designed to resemble masonry. The roof has skylights, and the windows include large hornless sash windows: 16-pane on the second floor, 20-pane on the first floor, and 24-pane sashes in the outer bays of the ground floor. There is a small oculus to the right of the door of No 3. The round-headed doorways in the inner bays are treated as a single unit and feature a delicate timber trellis double porch. The doorways have fluted pilasters, radiating fanlights, and doors with raised and fielded panels, along with corresponding panels in the reveals.

The forecourts are enclosed by dwarf stone walls and railings, with two gates in the center and one at either end. The railings along the street have spear-headed finials and standards topped with urn finials. The railings bounding the paths to the houses are of a different design and were added in the 20th century, re-using railings from elsewhere, specifically from Minwear House on Warren Street, which was demolished for a Post Office.

At the rear, the slate-hung facades face the sea and feature trellis porches, canted two-storey outer bays, and glazing arranged in a 6-24-6 pattern, with hipped roofs. Each side has a 16-pane sash window on the upper floor. The center has doors in renewed trellis porches, paired round-headed windows on the first floor, and a large overhanging addition from the early 20th century on the third floor, which has four windows and a hipped slate roof. There are also two dormers behind the parapet.