The house at Lissenhall Little is not visible, not accessible, and not marked by any signpost. What makes it worth knowing about is precisely that it existed at all, and that it was found just in time.

The site came to light during excavations carried out ahead of the construction of the M1 motorway, under licence number 01E1074. Archaeologists uncovered two Neolithic post-built structures in close proximity, and this one, designated the second of the pair, sat roughly nine metres to the south-east of its neighbour. It measured approximately nine metres long and five to six metres wide, a modest but coherent domestic footprint. Post-built construction, common in Neolithic Ireland, involved driving upright timber posts into the ground to form the structural frame of a building, with the holes left by those posts surviving long after the wood itself had rotted away. At Lissenhall Little, a line of post and stakeholes, none wider than about thirty centimetres in diameter, traced the shape of the structure. A fire pit was also recorded inside, a detail that anchors the space unmistakably as somewhere people lived, cooked, and kept warm. The findings were documented by Reilly in 2013.

There is nothing to see at the site today. The M1 passes through the area north of Swords, and the ground where the excavation took place has long since been sealed beneath road infrastructure. For anyone with a particular interest in Neolithic settlement in the greater Dublin region, the value lies in the archival record rather than any physical visit. The National Monuments Service database holds the formal record, and the paired nature of the two structures at Lissenhall Little, two houses apparently in use within sight of one another, is the detail most worth sitting with. It suggests not an isolated dwelling but something closer to a small community, or at least a shared place, going about ordinary life in a landscape that would become, millennia later, the main road north out of the capital.