The bare classification sits in the official record without elaboration, which is itself a kind of curiosity. Not a church, not a tower house, not a souterrain or a cashel, just a building, unnamed and undescribed, logged and left.

Mayo has no shortage of structures that resist easy categorisation. The county's landscape holds everything from early medieval enclosures to post-medieval agricultural remains, and a building recorded without further detail could belong to almost any period or purpose. It might be a roofless farmhouse from the clearance era, a small outbuilding associated with a vanished estate, or something considerably older that has yet to be properly examined. The townland name Fahybeg contains the Irish element beag, meaning small, suggesting it is the lesser of two associated places, the larger counterpart being Fahymore or similar. Beyond that, without further detail in the available record, the structure keeps its own counsel.