Strathmoyne, 6 Munro Drive West, Helensburgh

Strathmoyne is a large, two-storey Arts and Crafts/Shavian Old English Villa built in 1899, with an addition of a billiard room in 1910, designed by Robert Wemyss. The house occupies an asymmetrical L-shaped plan. It is constructed primarily of squared, stugged and snecked red sandstone, with ashlar facing on the ground floor, harled first floor, and mock half-timbering and red tile-hanging on the advanced entrance/stair block of the south elevation. The building features ashlar mullioned windows at ground level, timber mullioned windows at the first floor, overhanging eaves, and bargeboarded gables.

The south (entrance) elevation has a gabled entrance/stair block that projects forward slightly to the left. A bipartite window sits on the ground floor, above it a tripartite stair window with a tall, semi-circular arched light with tracery detail flanked by smaller bipartite windows. A carved ashlar panel to the gablehead displays a monogram, "S.A." The semi-circular arched doorpiece on the right return has chamfered reveals and streapwork decoration with a date in the tympanum, leading to a two-leaf boarded door into a vestibule, a red-tiled porch, and a panelled door to the main house featuring Art Nouveau stained glass in the upper panel. A panelled door to the basement is located to the left, with a timber beamed ceiling. Recessed bays flank the entrance block; a tripartite window is to the left at ground level, and a canted window with a 1-2-1 light arrangement is to the left. A tripartite window breaks the eaves to the right at first floor, incorporating a flat-roofed conrice with a central gablet, and a gabled 4-light window also breaks the eaves to the right. A single-storey wing, formerly the billiard room, is positioned to the right, boasting harled walls with mock half-timbering, chamfered angles, and a 4-light timber mullioned window that breaks the eaves. A recessed bay to the left of the entrance block features a window to the right, and a curved bay at the southwest angle displays a tripartite window. A bipartite window breaks the eaves at the first floor, centered on the elevation.

The west (side) elevation is characterised by a harled pilaster strip to the center and a curved bay at the southwest angle, with a wallhead stack. The north (rear) elevation has a tripartite window at ground level, a smaller window to the right, and three windows breaking the eaves at the first floor, including a narrow central window, a 4-light window with a cornice and gablet to the left, and a gabled window to the right. A single-storey-and-attic service wing projects to the left, featuring a gambrel roof with an apex stack that breaks the eaves to the north. The building utilizes sash and case windows on the ground floor with plate glass to the lower sashes, and multi-pane glazing to the upper sashes; many casement windows at first floor also have multi-pane glazing. The roof is piended and covered in grey/green slate with red ridge tiles and finials, topped by tall corniced harled stacks.

The interior features plain cornices, plaster and timber compartmentalised ceilings, a dog-leg staircase with timber balusters and carved newels, and original timber chimney pieces. The former billiard room preserves wainscot and a timber beamed coomb ceiling. Stained glass is present, including lead-pane glazing with delicate foreate stained glass panels in the tripartite hall and stair windows, and a curvilinear Art Nouveau panel in the vestibule door.

The property is enclosed by a red sandstone rubble boundary wall with drum piers topped by conical caps and iron gates opening onto Munro Drive, and a timber gate providing access to a side gateway onto Colquhoun Street.