Most entries of this kind concern prehistoric earthworks, medieval tower houses, or ecclesiastical remains; a house from the 1900s appearing alongside such company suggests something about it caught official attention, though precisely what that something is remains, for now, unrecorded in any publicly accessible form.

Greenville is a small townland in Galway, and beyond its location little can be said with confidence about this particular structure on the basis of available material. The designation of twentieth-century houses as recorded monuments is not as unusual as it might seem; buildings associated with significant historical episodes, notable individuals, or distinctive construction methods have all found their way onto such lists. Without further detail, however, the specific reason this house was considered worth noting remains an open question.