Few think about who was living here while all that monument-building was under way. Neolithic House 3, tucked into the zone between Tombs 1C and 15, is the trace of a domestic dwelling that was contemporary with, or slightly predating, the tomb construction itself, placing ordinary household life right at the centre of one of prehistoric Ireland's most ambitious ceremonial landscapes.

The house was identified during excavation as a circular structure roughly seven metres in diameter, its outline preserved not by walls but by an arc of 21 stake-holes running from west to north, the kind of evidence that survives only when conditions and careful excavation align. A hearth, set slightly off-centre, marked where a fire once burned. Beneath a thin layer of accumulated soil, excavators found flint waste flakes, the debris of tool-making, along with burnt bones of cattle and pig. These are not dramatic finds, but they are clarifying ones: people were knapping flint and cooking meat in the shadow of monuments that were being raised around them. The house belongs to what George Eogan classified as his Phase 3 Decorated Pottery complex, now understood as Middle Neolithic and dated to approximately 3500 to 2900 BC. It post-dates and partially overlies an earlier structure, Neolithic House 2, suggesting this part of the site saw repeated domestic use across generations. A sherd of Carrowkeel ware, a type of decorated pottery associated with passage tomb builders in Ireland, was among the artefacts recovered from beneath nearby Tomb 15, linking the household directly to the people responsible for the megalithic construction around them.