This four-storey rectangular tower, measuring approximately 10.2 metres north to south and 13.2 metres east to west, was already in ruins by the mid-17th century. The Civil Survey of 1654-6 recorded it as ‘the ruines of an old castle ye walls onely standing and fower cottages’, with the property then belonging to Rory and William Kennedy of Tombrickane, both noted as ‘Irish Papists’ in the survey records.

The tower’s construction from roughly coursed limestone rubble reveals typical medieval Irish building techniques, though time has taken its toll; the southwest corner has collapsed entirely. Visitors entering through the eastern doorway would have found themselves in a protective lobby, once guarded by a now-destroyed guardroom in the northeast corner. From here, a spiral staircase in the southeast angle provided access to all the upper chambers. The defensive nature of the castle is evident in its 2.1-metre thick walls and the strategic placement of its features, including a garderobe in the southwest corner whose outlet can still be seen at the base of the western wall.

The interior layout shows the typical arrangement of an Irish tower house, with a barrel vault over the second floor and another covering the top room above the entrance lobby. The second floor contained what would have been the main living space, complete with a fireplace in the north wall and a large embrasure with stone window seats to its east; perfect for catching light whilst keeping watch over the surrounding lands. The third floor, now inaccessible, features a twin-light ogee-headed window, whilst corbels on the northwest angle mark where a bartizan once projected, providing additional defensive capability. Throughout the structure, the fenestration progresses from simple slit openings on the lower levels to more elaborate single and twin-light ogee-headed windows on the upper floors, reflecting both the defensive requirements and the relative comfort of the different levels.