Not fallen into romantic ruin, not reduced to a few photogenic walls, but gone entirely, leaving no visible trace above ground. The site of Saint John's Chapel sits on a slight rise about forty-five metres back from the street, hemmed in by a concrete wall to the west, tumbled masonry to the north, and a line of conifers along three boundaries. The ground is overgrown and has served as a dumping area. A chain-link fence runs inside the line of what was once the northern wall. It is, by any measure, an unpromising patch of rough ground.

What makes the place legible at all is the cartographic record. The first edition Ordnance Survey six-inch map, published in 1840, shows the chapel as an L-shaped building, with the main body running east to west and a return projecting northward from the east end. By the time the second edition was surveyed and published in 1904, the map had been updated to read simply "Chapel (Site of)", a quiet cartographic acknowledgement that the building had ceased to exist in any meaningful physical sense. Sometime in those six decades the structure went from being a named, shaped building to a memory with a grid reference. There may also have been a graveyard associated with the chapel, adding another layer of lost use to the site. Roughly thirty metres to the northwest, a hall-house survives, or at least retains some presence; a hall-house is a type of medieval residential building, typically a single large ground-floor hall, and its proximity hints that this corner of Mullinahone was once considerably more substantial than it appears today.