The building in question served as Dublin's exchequer, the department responsible for collecting royal revenues and auditing accounts, a function that made it one of the most consequential structures in the medieval city. That it has vanished so completely from the physical and cartographic record makes it a curious absence rather than a presence, a gap in the map where significant administrative life once took place.

The historian Howard Clarke, writing in 2002, traces what little is known of the building's history. An exchequer is recorded in the area around 1220, placing it among the earlier phases of the Anglo-Norman administration that followed the twelfth-century conquest of Ireland. The structure required repair by around 1308, suggesting it had been in continuous use for the better part of a century, before being moved to new premises around 1317. It appears in the record again as late as 1501, indicating that whatever form it took by that point, the institution itself persisted into the late medieval period. The exchequer as an institution took its name from the chequered cloth laid over the counting table used for calculations, a practical accounting aid that gave the whole operation its identity. Beyond these documentary fragments, the building's location within Dublin's south city remains unresolved.

Because the site has never been precisely identified, there is nothing specific to visit or mark on a map. What survives is archival rather than physical: the references Clarke collates point to a building that moved at least once and was repaired at another point, suggesting an institution that adapted and relocated as the city changed around it. For anyone interested in medieval Dublin's administrative geography, the area south of the castle is worth walking with this kind of institutional history in mind, even knowing that the exchequer's exact footprint may never be recovered. The absence itself is informative, a reminder that much of what made a medieval city function left little behind beyond a line or two in a document.