11 Carnethie Street, Rosewell

11 Carnethie Street in Rosewell is a single-storey, two-bay lodge built in the Jacobean style around 1844 by architects William Burn and David Bryce, with later alterations and additions. The building features crowstepped gables and is constructed from grey ashlar sandstone with polished ashlar dressings, including a base course and chamfered surrounds to the windows.

The northeast elevation, which was originally the principal facade, showcases crowstepped advanced M-gabled bays. It has an architraved doorway with a stepped hoodmould above a square panel; this door has been replaced by a window with a boarded panel below it, alongside a narrow window to the right. There is also an advanced, three-light canted bay with stone panelled aprons to the left of centre.

The southeast elevation is irregular with two bays, featuring a crowstepped gabled bay on the left. It has a full-height stack at the centre of the gable, with a window set wide in the bay to the left and a narrow window in the bay to the right.

On the northwest elevation, there is a single crowstepped gabled bay with a tripartite window in the centre. The lodge has replacement two-pane timber sash and case windows, with stone mullions in the tripartite and canted windows. The roof is covered with grey slate and features scrolled brackets at the skewputts, tall cylindrical ashlar corniced stacks on the southeast and at the centre ridge, and cast-iron rainwater goods.

The gatepiers and quadrant railings consist of sandstone ashlar panelled gatepiers in a Greek cross plan, complete with a string course, decorative panels, and a pyramidal corniced cap. The quadrant railings are highly decorative, featuring stylised anthemion panels. There is also a pair of cylindrical ashlar sandstone piers with a string course and flat, circular cope that terminate the quadrant railings.