The church is modest in scale, roughly twelve metres north to south and just under eight metres east to west, and what remains of its walls has long since fallen and grassed over, rising no more than about seventy centimetres above the ground.

A bivallate ringfort is a circular or roughly circular enclosure defined by two concentric banks and ditches, a form of defended farmstead or settlement typical of early medieval Ireland. The decision to place a church within one was not unusual; early Christian communities frequently adopted pre-existing enclosures, and the boundary of a ringfort could serve as a ready-made sacred precinct. At Castleventry, the practice of burial within that space has continued long enough that the graveyard is now the more visible feature. The church itself was already a ruin by 1615, the date recorded by Brady, which means it had likely been abandoned during or before the upheavals of the late sixteenth century that saw so many small parish churches across Munster fall out of use.