The site sits just off the main Cahir-Cashel section of the Cork road, which runs northeast to southwest along the ridge top, with the historic Outeragh Church located 200 metres to the southwest. According to the Civil Survey of 1654-6, the castle once belonged to William Butler, recorded as an Irish Papist who held ‘two acres on which is a castle’ at ‘Owghteragh’ in 1640.

Today, the castle ruins occupy a small patch of scrub measuring 13 metres north to south and 24 metres east to west, surrounded by trees and vegetation at the edges of what is now tillage farmland. The site has become something of a dumping ground for field clearance stones and dead wood, with six distinct piles of collapsed masonry visible amongst the overgrowth. Despite the deterioration, careful observation reveals the castle’s construction methods; built from rubble limestone and sandstone in random courses, the surviving chunks of masonry still display flat faces with returns that once formed internal features such as embrasures, cupboards, or wall junctions.

The substantial nature of the original structure is evident from the wall thickness, which measures up to 1.2 metres in places. While time and neglect have taken their toll on Outeragh Castle, these ruins serve as a physical link to the area’s 17th-century history, when families like the Butlers maintained their estates despite the religious and political upheavals of the period. The castle’s proximity to both the old Cork road and Outeragh Church suggests it was once a significant local landmark in this rural Tipperary landscape.