Barn and attached Granary at Lower White Castle

The corn barn and attached granary at Lower White Castle are designed in an L-plan, enclosing two sides of the lower farmyard. They are constructed from rubble stone and feature slate and corrugated metal roofs. The east gable of the granary range faces the road and includes a segmental arched opening with stone voussoirs and a shallow stone sill. The upper gable has a pitching loft with a similar voussoired opening and boarded shutters.

The north elevation, which faces the farmhouse, has stone steps leading to the upper granary, where there is a boarded door. The granary doorway is positioned above the eaves and has a monopitch roof with slated cheeks. To the right, there is a 20th-century blockwork wall with a boarded door, and further right is the north gable of the barn, which features three vent slits—one in the upper gable and two below.

The west elevation of the barn has a corrugated metal roof and corrugated metal doors leading to the central threshing floor. At the lower end of the barn, which is the right side, there is a cowhouse with two doorways that have shallow timber lintels and two vent slits in the upper wall. The opposing door of the threshing floor opens into an enclosed yard and has a 20th-century projecting canopy with a flat corrugated metal roof.

On the ground floor of the granary range, from left to right, there is a fixed three-light window, a broad doorway with a segmental arch made of stone voussoirs and double doors, and a smaller doorway with a similar voussoired arch above the door.