43 Charlotte Street, Helensburgh

43 Charlotte Street in Helensburgh is a two-storey, asymmetrical Arts and Crafts/Shavian villa designed by William Leiper in 1906. The building features an Old English L-plan layout, with a harled exterior complemented by cream ashlar around the doorpiece. The first floor is jettied, and the villa showcases timber transomed and mullioned windows, with additional mullioned windows on the first floor, bargeboarded gables, and overhanging bracketed eaves.

On the entrance elevation facing Alma Crescent, the entrance bay is positioned to the right, while a gabled bay with a chamfered angle is to the left. The advanced ashlar doorpiece has a depressed arch and deep chamfered reveals, leading to two-leaf panelled doors and a half-glazed vestibule door. Above, there is a window on the first floor. The slightly advanced gabled bay to the left features an engaged canted window at both the ground and first floor, with a 2-2-2 configuration at the ground level. To the right, there is a bipartite window on the first floor.

The garden elevation includes a full-height canted bay off-centre to the left, which has a jettied gablehead, a semi-octagonal window at the ground level, and a shallow canted window on the first floor. To the right at ground level, there is a recessed bay containing a tripartite window on the left and another window on the right. The centre features a bipartite window on the first floor, while a recessed gabled bay is located to the outer left, with a window on the right at the first floor, an off-set tiled course at the gablehead, and a wallhead stack at the apex. A conservatory is attached in the re-entrant angle, with a harled base, timber framework, four-pane windows, and a door to the west.

The side elevation on the west features a full-height canted window (2-2-2) to the outer right and a recessed bay to the left containing two windows. Above, there is a tripartite window on the first floor. A single-storey lean-to projection extends to the outer left and continues around the north and east elevations of the northern wing.

On the north elevation, a canted oriel window, which serves as a stair window, breaks the eaves and is supported on a swept corbel in the re-entrant angle to the left. The projection continues around the wing to the right. The villa features six-pane and four-pane casement windows, a red tiled roof, and harled coped stacks.

Inside, there is a timber balustrade leading to the stair, Art Nouveau wallpaper in the hall, and original timber chimneypieces.