The west gable still stands to its full height, and set into it is a twin-light round-headed window with a small circular opening above, an arrangement that gives a sense of the building's original ambition. The three other walls, the north, south, and east gable, have collapsed to varying degrees, and the doorway that once opened in the south wall has been robbed out, meaning its dressed stonework was removed and reused elsewhere, a fate common to abandoned medieval buildings throughout Ireland. Several of those arched door-stones now lie on the ground just south of the ruin, identifiable by their careful shaping. Inside the roofless shell, a later internal wall divides the space, evidence that the building's use continued or changed after its original medieval phase.

The church is dedicated to St Ceannanach, a dedication recorded by Hardiman as early as 1846, though the structure itself is medieval in date. It measures roughly 20 metres in length and just over 6 metres wide, oriented east to west in the standard manner for Christian churches of the period. A wall cupboard, likely once used to store liturgical vessels, survives in the north end of the east gable. In the graveyard, which is subrectangular in shape and overlooks the lough to the south, two cross-slabs are still visible; these are flat grave-markers carved with a cross, a type found across early medieval Ireland and often associated with sites of considerable age. The setting of the enclosure, positioned above the water, suggests the site may have origins earlier than the standing masonry implies.

When surveyors visited in October 1983 the interior was heavily overgrown, but by a revisit in May 2017 much of that vegetation had been cleared, making the fabric of the walls considerably easier to read. One detail that emerged more clearly as a result is a fragment of a hanging eye, part of the original door hardware, still visible in the internal face of the south wall. It is a small survival, but a specific one, the kind of incidental detail that tends to go unnoticed until someone takes the trouble to look.