Garthland, 38 Argyle Street West, Helensburgh

Garthland is a 2-storey, 3-bay villa built in 1857, featuring Tudor architectural details and a single-storey service wing to the west. The building is constructed from red stugged and snecked sandstone with ashlar dressings, including a base course, chamfered arrises, ashlar mullions for the canted windows, and a hoodmould over the doorpiece and first-floor windows. The villa has a plain bargeboard and stop-chamfered quoins.

On the south (entrance) elevation, the taller gabled bay is advanced to the left, while two bays are recessed to the right, featuring a doorpiece in the re-entrant angle with two-leaf panelled doors and a plate glass fanlight above a half-glazed vestibule door. There is a flat-roofed slate-hung dormer above. To the right, a canted window has a pierced stone parapet with an intersecting cusped tracery pattern, and above it, there is a gabled dormer-headed window that breaks the eaves. The outer left gabled bay features a canted window at ground level, similar in detail to the window on the right, with a window above on the first floor.

The west (side) elevation has a window to the outer right and a taller gabled bay to the left with a window on the first floor. There is a single-storey wing abutting this side, which has a window facing south and is connected to a gabled outbuilding by a screen wall. A modern greenhouse is attached to the screen wall.

On the north (rear) elevation, there is a stair window in a gabled dormer head that breaks the eaves at the center, with additional windows to the right and left and dormers above. A lower single-storey block abuts the angle to the right and connects to the service wing to the west.

The east (side) elevation features a modern lean-to garage. The villa predominantly has 4-pane sash and case windows, with a 12-pane sash and case window on the rear elevation. The roof is covered with grey slate, and there are ashlar corniced stacks with original cans. There are also two canted dormers with piended roofs on the north side.

The interior has not been seen. The boundary wall features semi-circular ashlar coping on a rubble wall, with ashlar piers that have chamfered angles and corniced pier caps.