What remains today is essentially nothing: no walls, no foundation stones protruding from the soil, no worn threshold. The site has been levelled so thoroughly that standing on it would give no indication whatsoever that anything religious, communal, or ancient had ever occupied the ground.

The only firm record of the place comes from the Ordnance Survey's six-inch map of 1842, which marks a subcircular enclosure roughly 38 metres in diameter, traced in broken line and labelled simply "Site of Church". That broken line is telling. Even by the mid-nineteenth century, the cartographers were recording an absence rather than a presence, sketching the approximate boundary of something already gone. The subcircular shape is consistent with early ecclesiastical enclosures found across Ireland, where a curving boundary, sometimes a raised earthen bank, would have defined a sacred precinct around a church building. At Killaclug, that enclosure is now as flat as the surrounding ground, located at the northern end of what is described as a garden, absorbed into the domestic landscape so completely that its former function is invisible.