North Lodge, Mount Stuart House

North Lodge at Mount Stuart House is a Tudor-Gothic gatelodge designed by William Burn around 1820. This asymmetrical single-storey building features three bays, with a prominent gabled bay on the outer left. It is constructed from droved yellow sandstone ashlar with polished sandstone dressings, and includes a raised base course, a corniced canted window beside the entrance, and moulded eaves. The openings have architraved polished hoodmoulds and chamfered cills, with stone mullions.

The northeast (entrance) elevation showcases a projecting porch with a single octagonal pier flanking a Tudor-arched surround, which contains a recessed timber panelled door and a tripartite fanlight. To the outer right, there is a bipartite window, while the gabled bay on the outer left features a three-light canted window (bipartite at the front) and a blank armorial panel in the apex above.

The southeast (side) elevation has four bays, with a part-glazed boarded timber door located in the penultimate bay to the outer left, accompanied by a projecting square-plan columnar porch. There are flanking bipartite windows, and a bipartite window is centered in the gabled bay to the outer right, also topped with a blank armorial panel.

The lodge predominantly has 4-pane, lying-pane timber sash and case glazing, along with some 4-pane top-hopper windows. The graded grey slate roof features raised stone skews, replacement rainwater goods, and corniced sandstone octagonal flues.

The interior was not seen in 1996.

At the southeast entrance elevation of the outbuilding, there is a boarded timber door offset to the right of center, with a graded grey slate piended roof and cast-iron rainwater goods.

The gatepiers and gates include a single octagonal pier to the northeast and paired octagonal piers flanking the entrance. The decorative wrought-iron vehicular and pedestrian access gates feature foliate borders, stylized patterns, and inset coloured armorial panels. The estate boundary walls and railings consist of ashlar coping on curved, droved yellow sandstone walls flanking the gates, along with a low coped curved wall topped with wrought-iron railings to the northeast.