What survives above ground is an oval enclosure, roughly 45 metres east to west and 30 metres north to south, marked along its southern edge by an earth-and-stone bank and on the eastern side by a well-defined scarp, a low step in the ground where the land drops away. The church itself stands towards the eastern end of this enclosure, a placement that is characteristic of early Irish ecclesiastical sites, where the principal building was often positioned away from the central axis rather than at the geometric heart.

The enclosure visible today is almost certainly a remnant of the original ecclesiastical boundary, the kind of circular or oval perimeter, sometimes called a cashel or temenos depending on its material and period, that early Irish monasteries and church foundations used to delineate sacred ground from secular land. What makes Laughanstown particularly interesting is that aerial photography, catalogued under OS reference 89877, reveals crop-marks suggesting not one but two further outer enclosures beyond the surviving bank, with radii of approximately 70 metres and 140 metres respectively. This concentric arrangement, noted by Corlett in 2014, points to a site of some organisational complexity, the kind of layered enclosure pattern associated with early medieval ecclesiastical settlements of regional significance. The innermost enclosure held the church; outer rings likely accommodated ancillary buildings, gardens, or zones of graduated sanctity.

The site sits in a suburban fringe of south Dublin where development pressure has been considerable, so the survival of even partial earthworks is worth noting. The earthen bank along the southern side and the eastern scarp are the features most likely to be legible on the ground, though they require a certain patience to read in the landscape. The crop-marks that reveal the outer enclosures are visible only from the air and under the right seasonal conditions, when differential growth in grass or cereal crops traces the buried boundaries beneath. Anyone with an interest in the archaeology of early Irish Christianity will find the site a useful illustration of how much information can be held in a few low ridges of earth, even when the more dramatic stonework has long gone.