That phrase, indeterminate date, carries a particular weight in Irish archaeology. It means the building has been noted, mapped, and formally recognised as a monument, yet its age remains unresolved. It could be post-medieval, it could be older. Without excavation or documentary evidence, the question stays open.

Lavallyconor is a rural townland in Connacht, and like many such places in Galway, its landscape holds the residue of centuries of habitation, land clearance, and abandonment. Houses recorded without a fixed date often fall into a category that includes vernacular structures, the kind built without architects or formal plans, using local stone and inherited techniques. Some belong to the post-medieval period following the seventeenth century; others are earlier, their forms difficult to distinguish without close analysis. The designation as a monument, however modest the structure, signals that someone considered it worth preserving in the archaeological record.