Kintillo House And Gatepiers, 34, 36 Suffolk Street, Helensburgh

Kintillo House is a villa dating to approximately 1860, with significant additions and alterations made by William Leiper in 1888 and 1889. The original house is a two-storey and attic, three-bay design, to which a two-storey block was added to the rear and a single-storey billiard room was built to the right (east) side.

The exterior is constructed of stugged, snecked cream sandstone with ashlar dressings. The timber porch has red tile-hanging on the walls of the billiard room. Features include a base course, architraved windows, chamfered arrises, an eaves course, quoin strips, decorative bargeboard, and overhanging, bracketted eaves.

The south (entrance) elevation has a taller gabled bay on the outer left, with two recessed bays to the right. A gabled porch is centrally located. The timber porch sits on a sandstone base, and has a segmental-headed archway with ogeed moulding and floreate decoration, flanked by single lights with small pointed-arch lights above. A mock-half-timbered gable displays scrolled decorative bargeboard. The porch incorporates encaustic tiles, seating in the ingoes, a two-leaf panelled door, and a half-glazed vestibule door. A bipartite window is located to the right at ground level, with a window above it at the first floor. The taller gable bay to the left contains a two-storey canted window with parapet, and a window to the gablehead. The billiard room, added in 1899, features a five-light window centrally, and a two-light window on its return to the right.

The west (side) elevation has a window to the left at ground level and a single-storey lean-to abutting to the right. A window is centrally located at the first floor.

The north (rear) elevation displays windows at ground and first floor levels on the outer right and left. A single-storey service wing abuts to the outer left. A two-storey canted block, added in 1888, is centrally positioned, with a chamfered north entrance elevation. It features a central doorway, flanked by windows on the chamfered returns. A slightly corbelled canted oriel sits above the doorway, with transomed single windows on each face. A jettied gable is supported by timber brackets on ashlar corbels. The side elevation to the right (west) includes a small window to the left at ground level, a bipartite window to the right, and a tripartite window below the eaves to the right.

The windows are primarily sash and case, with a variety of glazing patterns, including plate glass, four-pane, twelve-pane, and geometrical lead-pane glazing to the 1888 block. The roof is covered in grey slate, with slate-hung gabled dormers, and a finialled apex to the 1888 block. Corniced ashlar stacks are topped with shaped cans.

The interior includes wainscot to the hall, and a Jacobean style timber chimneypiece with tapering Ionic pilasters flanking and lions heads, along with a pilastered tripartite timber overmantle.

To the north of the house, a rectangular-plan garage abuts the boundary wall. Constructed of harled stone, it features two-leaf garage doors on the south face and a doorway to the right. A grey slate gambrel roof incorporates red ridge tiles.

The boundary walls are constructed of painted rubble with an ashlar coping. Ashlar piers have low pyramidal caps. Wrought-iron gates are present.