While no visible traces of the original fortification remain above ground, historical records from the early 20th century confirm that a castle once stood on this site. The transformation from defensive stronghold to agricultural use represents a common fate for many of Ireland’s lesser castles, where practical farming needs gradually overtook the preservation of medieval structures.

The site was documented by Jordan in 1934, who noted that some of the castle’s stonework had likely been incorporated into the farm buildings that replaced it. This practice of recycling medieval masonry was widespread across rural Ireland, where dressed stone from abandoned castles provided ready building material for barns, sheds and boundary walls. The complete disappearance of visible castle features at Haggardstown suggests either a systematic demolition or a gradual dismantling over centuries, with the stone being repurposed as needed.

Archaeological surveys conducted in the 1980s and 1990s, including the Archaeological Inventory of County Louth and the Archaeological Survey of County Louth, have confirmed the site’s historical significance despite the absence of standing remains. These surveys, published by the Stationery Office in Dublin, form part of Ireland’s comprehensive effort to document and protect its archaeological heritage, even where that heritage exists only in historical memory and reused stone.