Pantile Rear Extension, The Old Hall, Ormiston Hall

The Old Hall is an early 17th century building featuring a near symmetrical, L-shaped, two-storey layout that likely includes earlier fragments. It is constructed of rubble with large stone quoins, a roll-moulded arched doorway, and an altered roll-moulded window at the rear. The building has vaulted cellars and was substantially rebuilt above, probably in the later 18th century, with three vaulted chambers. There is a wide stone newel stair that originally continued further up, and the structure has three uneven bays with a forestair to the southwest of the kitchen leading to the courtyard. An additional extension to the southeast includes a large wallhead stack.

The southeast wing consists of two bays extending from the corner with a round arched former cart arch. It has three additional bays to the southeast with a central forestair, and all first-floor windows are gabletted. There is a single-storey pantiled rear extension, with all extensions built of rubble and showing variations in execution, featuring large quoin stones and slate roofs.

The stable range has been converted into a domestic range and comprises blocks of various ages, similar to the Old Hall. The southwest section dates to around 1805 and is described on a plan as new stables. It consists of two near-symmetrical blocks, each with three bays, a central door, and one loft opening above. The northeast range, dating to around 1800, is seven bays long and features three low segmental arches with small windows above.

The predominant glazing pattern in the sash and case windows is a 12-pane design, with grey-green slates and ashlar coped skews. Skylights have been added to the stable range.

The walled garden consists of the remains of rubble walls forming a large L-shaped garden to the southeast, which contains an ancient yew tree with branches that have re-rooted. This tree is similar in age to one at Whittingehame Tower, and it is said that John Knox and George Wishart preached under the arbour created by its branches.