4 North Street, Ballycastle, Co Antrim, BT54 6BN

4 North Street, Ballycastle, is a mid-to-late 19th century terraced house, part of a unified block created with No. 5 North Street. Although the two properties lack entirely consistent detailing, the building retains much historic fabric and contributes significantly to the character of its surroundings.

The structure comprises the left-hand portion of a five-bay wide, three-storey composition housing two dwellings. A shared arched coachway occupies the ground floor of the central bay. The entrance elevation of this house is two bays wide at ground floor (to the left of the archway), two bays wide at first floor, and three bays wide at second floor, with the upper storey extending over the shared archway. The roof is covered in Bangor blue slates in regular courses, with a chimney set into the left-hand gable. Walls are smooth rendered and painted, with a projecting plinth, corbel course, and projecting eaves course.

Windows throughout are rectangular timber sliding sash, one-over-one with horns, set in plain reveals and fitted with projecting painted stone cills. The main entrance is positioned to the left of the coachway: a rectangular timber panelled door with a fanlight, set within a raised pilastered surround featuring a frieze and cornice. The shared coachway has a segmental arch with raised block surrounds and a shared keystone; a shared name panel above reads 'Strandview'.

The rear elevation is three storeys tall, with asymmetrical fenestration: two bays wide at ground floor (to the right of the coachway), three bays wide at first floor (including a room directly above the archway), and two bays wide at second floor. A central bay projects forward with a modern steel fire escape stairway attached; two modern flush timber doors provide access. Walls are rendered with wet dash finish, and the roof matches the front in Bangor blue slates with an original flush rooflight. Gutters and downpipes are PVC. Rear windows are modern PVC rectangular units, mostly fixed lights with top-hung vents, except one first-floor timber window of similar design; all have concrete cills.

Within the common coachway, the ceiling is flat plain plaster and the side wall is plastered, lined, and blocked with a PVC downpipe at the right end. Four iron cross beams run below ceiling level. The rear yard has a concrete surface and contains a modern detached lean-to shed of concrete blockwork with rendered finish, corrugated perspex roof, PVC rainwater goods, modern timber windows, and an old boarded door. A two-storey outbuilding or secondary house stands at the rear, featuring rendered roughcast walls, a slated roof matching the main house, one chimney (rendered with concrete cornice and modern red pot), modern PVC windows, and a PVC door.

The building stands within the built-up town centre in a terrace of shops and houses, facing directly onto the pavement with views toward the sea. The precise date of construction is uncertain, but the block appears to represent a mid-to-late 19th century rebuilding of earlier properties, as evidenced by Ordnance Survey maps of 1857 and 1904 showing structures on this and adjoining sites.