What survives is fragmentary but legible enough to suggest a rectangular structure roughly twenty metres long and nearly fourteen wide, pressed into the south-western corner of the moated site it shares its landscape with.

Moated sites are a particular feature of medieval Ireland, appearing most frequently between the thirteenth and fourteenth centuries. They typically consist of a raised platform or enclosure surrounded by a water-filled or dry ditch, and were associated with manorial settlement, often belonging to Anglo-Norman landowners farming the countryside during the period of colonial expansion. The structure at Lispheasty sits within the south-western quadrant of just such an enclosure. Its northern wall is the most intact of what remains, measuring around two and a half metres wide, though it stands no more than half a metre above ground on its outer face and barely a quarter of a metre on the inner. The eastern wall has all but vanished, now only barely discernible beneath the surface. The walls abut the inner bank of the moat itself, suggesting the building was designed to make use of that boundary as part of its fabric, or was simply positioned to maximise the sheltered interior space of the enclosure.