Casterton Old Hall

Casterton Old Hall is a house that has been converted into a school residence. It dates back to the 17th century with later additions. The building is constructed from stone rubble with slobbered mortar and features a slate roof. It has a central entrance plan with an extension to the east.

The south facade is two storeys high and consists of four bays. The second bay projects as a narrow porch bay under a catslide roof, while the fourth bay is lower and has a shallower roof. The windows are double-chamfered mullioned, most of which have a transom and label mould. The ground floor has windows arranged in a 4:3:2-light pattern, and the first floor has a 4:2 (without transom) and 2:2-light windows. The entrance features flat pilasters with hollow chamfered edges, and the lintel has a hollow-chamfered segmental soffit with a keystone shaped like a grenade, a pulvinated frieze with rosettes, a cornice, and a slate canopy. The entrance door is panelled.

The first and third bays have gable-end stacks with diagonal shafts, with the stack in the first bay projecting. The left side of the building has a cross-mullioned window on the ground floor, two 2-light windows on the first floor, and two attic lights. The rear includes a gabled wing with a projecting gable-end stack that also has diagonal shafts. There are basement and attic lights, a ground floor 4-light window with leaded glazing, and a similar 3-light window on the first floor. The right side features sashed windows, including one on the ground floor with glazing bars, and the rear of the extension has casement windows. The right side also has an entrance with a wide-boarded door.

Inside, the ground floor has two fireplaces; one features a Tudor-arched opening with twisted wood columns and an overmantel adorned with relief panels of busts and dragons, likely reused from around 1530-1540, while the other has a segmental head and moulded jambs. A built-in cupboard has fluted columns flanking the front doors, which are inscribed with "WHA" and "1613," and also has flanking rear fielded panelling. The round-headed entrance to the stair has paired three-panel doors, and there is a two-panel door with bolection moulding. The stairway features turned balusters and newels. On the first floor, there is a room with panelling moulded on three sides and a 12-panel door with a wooden handle.