Former Dairy, Loggia, Rear Yard Walls and Outbuilding to North of Lambton Castle

The former dairy, loggia, rear yard walls, and outbuilding to the north of Lambton Castle date from the mid-19th century and are now used for storage. Constructed from ashlar sandstone, the building features overlapping stone tiles on the roof. The dairy is designed in the style of a Romanesque chapel, with a loggia on the right side and yard walls along with an outbuilding at the rear.

The gable-fronted dairy has a round-arched doorway located under the loggia on the right side. It also features round-arched windows. The central front buttress is flanked by single windows with engaged colonnettes and roll-moulded heads beneath semicircular hoodmoulds. In the gable, there are a pair of small lights with zigzag moulding on the heads and linked hoodmoulds. The steeply-pitched roof has coped gables. The left return has three bays with recessed sections between piers, each bay containing a single window and a corbel table. There is a small projecting gabled bay at the rear.

The flat-roofed loggia has three roll-moulded round arches supported by thin paired colonnettes with waterleaf capitals. An identical arch is found on the right return bay, and there is a classical marble relief set into the rear wall, along with a lean-to stone shed at the back.

Tall walls with chamfered coping enclose the rear yard, with the left rear wall featuring a round-headed archway and the rear wall containing a square-headed doorway. The single-storey, two-bay outbuilding has a boarded door, an 18-pane sash window, a roof with coped gables, and a stone end stack.

Inside the dairy, there is a tiled floor and walls, with marble benches on three sides. A round arch with billet moulding is supported by single colonnettes in front of the rear bay. The interior also features six roof trusses with arch-braced collars resting on mid-wall corbels.