Classified simply as a house of indeterminate date, it occupies that peculiar category of place that has been noticed, recorded, and named, yet remains largely unexamined in any publicly available form. The name of the townland itself carries some weight: tearmann in Irish generally refers to sanctuary land, territory historically associated with the protection afforded by an early church or monastic site. Caithreach, meanwhile, is linked to the word for a city or stone fort, suggesting the area may have had significance well before anyone thought to count its ruins.

Beyond the townland name and the bare classification, the details of this particular structure remain effectively inaccessible at present. No period has been assigned to it. Whether it represents a post-medieval farmhouse, an earlier domestic building, or something harder to categorise without excavation or closer survey is simply not recorded in any available source. Mayo has no shortage of such survivals, from the remains of pre-Famine settlements to much earlier enclosures and habitation sites scattered across its bogland and hillsides, and a great many of them carry exactly this kind of open-ended designation. The indeterminate date is not a gap so much as an honest admission that the archaeology has not yet been worked through in sufficient detail to say more.