The structure is almost square in plan, distinguished by its unusual design featuring semi-circular towers that project from the western and eastern corners. Built from uncoursed limestone and greywacke, the castle rises three storeys high, with rounded but non-projecting corners to the north and south. This asymmetrical design sets it apart from the more typical rectangular tower houses found throughout Ireland.

The castle’s original medieval features have been significantly modified through various periods of occupation and renovation. The ground floor once featured a barrel vault, though this has either been removed entirely or remains hidden beneath later alterations. The western tower originally housed the main stairwell, whilst the eastern tower contained a garderobe; both have since been gutted. Evidence of the garderobe’s drainage system can still be spotted in a relieving arch at the base of the eastern tower’s northeast face. The original entrance was positioned in the northwest façade, just northeast of the western tower, though modern windows and crenellations now crown the walls, giving the castle a somewhat romanticised appearance that wouldn’t have existed in its medieval heyday.

During the eighteenth century, plain additions were constructed on the northeast and southwest sides of the castle, reflecting its continued use as a residence rather than a purely defensive structure. Recent pointing work has helped preserve the remaining medieval fabric, though these conservation efforts, combined with the various historical modifications, mean that visitors today see a structure that represents multiple layers of Irish architectural history rather than a purely medieval fortress.