What makes it quietly arresting is not its scale or drama but a single surviving architectural detail: a cusped ogee-headed window set into the east gable. An ogee arch has a double curve, concave below and convex above, and the cusped variant adds small projecting points within the arch opening, a decorative flourish associated with late medieval ecclesiastical building in Ireland. That one window, now half-swallowed by ivy, is the only ornamental feature left standing.

The church is rectangular in plan, measuring roughly ten metres east to west and just over four metres north to south internally. Both gables remain, though the east one is heavily overgrown. The north and south walls have largely collapsed; only a short section of the north wall, less than three metres long, still extends from the west gable. A gap in the south wall marks where the doorway once stood, and just inside that threshold, traces of an internal dividing wall survive, suggesting the interior was at some point separated into distinct spaces, perhaps a nave and a chancel, as was common in smaller Irish parish churches. The island setting in Lough Cutra, wooded and relatively inaccessible, has likely contributed both to the building's poor state of preservation and to its obscurity.