It measures roughly 2.2 metres at the base, reaches a maximum height of about 3.3 metres, and is 0.8 metres thick, running on a north-south axis. Built of rubble limestone set in lime mortar, it is pierced by two putlog holes, the small square sockets left behind when the timber scaffolding poles were removed during original construction. That this fragment survives at all is something of an accident: a survey from 1826 noted that the church walls were still standing, yet by 1840 they had been levelled. What visitors find today is what escaped that clearance.

The site carries a complicated ecclesiastical past. It served as the parish church of Rochestown, but it was also associated with the Dominicans, the order of preaching friars founded in the thirteenth century, though scholars Gwynn and Hadcock writing in 1970 concluded it was probably no more than a cell or vicariate dependent on the larger Dominican houses at Limerick or Kilmallock. The antiquarian T. J. Westropp, writing in 1904 and 1905, noted that earlier historians had confused it with other local foundations, and that one authority, Archdall, had mistakenly attributed it to the Carmelites. Documentary records trace the place across several centuries: Rochestown appears as part of the commandery of Aney in 1578, as formerly belonging to Ballynumrare parish in 1586, and as sitting within the Caherkynlis deanery by 1615. Closely associated with the site was Toberfuaird, a cold well nearby said to have curative properties. In 1830, a man named John Croker had it closed.

The surviving wall fragment sits in the north-east quadrant of the graveyard, so the wider burial ground provides the immediate context for a visit. The masonry is modest but legible enough for anyone interested in how rubble limestone construction was put together, and the putlog holes give a small, concrete sense of medieval building practice. There are no formal visitor facilities, so the site rewards those who arrive prepared to read the landscape at their own pace.