Orientated on a northeast-southwest axis and tucked into the northern angle of a bawn wall, the structure measures roughly 3.5 metres across at its base. A bawn, for those unfamiliar with the term, was an enclosing defensive wall or courtyard attached to a tower house or fortified residence, and this one formed part of a cluster of buildings that included a separate house with its own bawn immediately to the northeast.

The whole grouping sits in grassland on a low rise of rock outcrop, about two fields north of Graystown Castle, and commands good views in every direction, which likely influenced why people settled and built here in the first place. The building in question was constructed against the inner face of the bawn on the northeast side, a position that suggests it served a practical rather than defensive purpose, perhaps as an outhouse or a domestic structure associated with the adjacent house. To the south, a deserted medieval settlement further underlines that this quiet corner of Tipperary was once a place of some activity, with a tower, multiple enclosures, and associated buildings all concentrated within a relatively small area. What remains today is reduced to grass-covered wall-footings and low earthen banks, but the spatial logic of the complex is still legible in the landscape for those willing to read it slowly.