According to the Ordnance Survey Letters from 2005, the castle walls were completely cleared away more than 30 years prior to that documentation, leaving behind only the name of the field to hint at what once stood there. The first edition Ordnance Survey map from 1838 provides our best glimpse into the castle’s past, marking an unroofed rectangular structure approximately 18 metres long running north to south and 10 metres wide, labelled as the ‘Site of Timahoe Castle’ at the northeast corner of Castle Field.

The castle once occupied a spot on gently rolling pastureland, positioned about 250 metres south of the local church and its accompanying graveyard, both of which still stand today. While these ecclesiastical buildings have survived the centuries, the castle itself has left no visible traces above ground; no foundation stones peek through the grass, no earthworks mark its boundaries. What remains is purely documentary evidence and the enduring place name that refuses to let the castle be entirely forgotten.

This complete absence of physical remains is not uncommon for Irish castles that fell out of use in earlier centuries. Many were systematically dismantled, their stones repurposed for field walls, houses, and farm buildings as the need for defensive structures gave way to more practical agricultural concerns. The fact that Timahoe Castle was already reduced to foundations by 1838 suggests it may have been abandoned and quarried for building material sometime in the 18th or early 19th century, though the exact date of its demise remains unknown.