The rectangular building appears on the 1838 Ordnance Survey six-inch map, surrounded by a cluster of vernacular buildings to its west and north. By the time the 25-inch plan and 1922 OS six-inch map were drawn up, however, the castle had vanished, with only the notation ‘Kilcummin Castle (Site of)’ marking where it once stood.

Today, no visible remains of the castle itself survive at the location. However, keen observers might spot large quoin stones with rough hammer dressing built into the walls of a ruined stone cottage nearby; these architectural elements were likely salvaged from the castle ruins and repurposed by local builders. The site remains historically significant not just for its lost castle, but for its proximity to other important features: a holy well sits just 10 to 15 metres to the north, whilst a church and graveyard can be found approximately 20 metres to the south.

This cluster of historical sites at Ballinlena speaks to the area’s long occupation and importance in County Mayo’s history. Though the castle itself has been lost to time, its memory persists in maps, records, and perhaps in those recycled stones that found new life in humbler buildings, a common practice in rural Ireland where good building material was never wasted.