Today, only fragments remain of this once impressive structure; a roughly D-shaped tower survives to just one storey high, though it retains an impressive groin-vaulted roof over its ground floor. The tower features a destroyed window on its northeast side and what appears to be a blocked doorway to the south, whilst portions of bawn wall still cling to the northeast and southwest faces, suggesting this tower once flanked a larger defensive curtain wall.

Historical records paint a picture of steady decline for Kilfadda Castle. When surveyed in the 1650s during the Civil Survey, it was already described as a ‘ruined old castle, Irrepayreably demolished’. By the 1830s, the OS Letters recorded that only ‘one small apartment with a stone arch over it’ remained standing, along with an isolated fragment of wall showing vestiges of another stone arch. The site’s original bawn area appears to have been defined by what is now a drainage ditch, with a modern laneway cutting directly through the historic site just south of the tower.

The castle’s stones have found new life in more recent constructions; a nineteenth-century building immediately south of the laneway incorporates medieval stonework likely salvaged from the demolished portions of the castle. Another nearby house from the same period features a roughly dressed, chamfered and rebated door jamb protruding from its gable, almost certainly pilfered from the original medieval structure. These repurposed elements serve as scattered reminders of Kilfadda Castle’s former extent and the practical recycling of its masonry by local builders over the centuries.