What was once a community clustered around a tower house, one of those fortified residential structures that punctuated the Irish countryside throughout the later medieval period, now leaves no visible trace at ground level. The land has been so thoroughly improved over the centuries that nothing remains for the eye to catch.

The settlement's existence is known from its marking on the Ordnance Survey six-inch map, the large-scale nineteenth-century survey that captured field boundaries, ruins, and place-name evidence across Ireland before much of it disappeared. That cartographic ghost is now the primary record. Extensive land improvement in the area around the tower house has removed whatever earthworks, house platforms, or enclosures might otherwise have survived, leaving a site that exists more as a classification than as a physical presence. Such deserted medieval settlements are not uncommon across Tipperary and the wider Irish midlands; communities that contracted or vanished entirely during the upheavals of the fourteenth to seventeenth centuries, whether through plague, warfare, land consolidation, or agricultural change, often left only subtle traces, and those traces have proven vulnerable to drainage schemes and repeated ploughing over the following generations.

There is little to observe on the ground at Knockagh today. The value of knowing the site exists lies less in what can be seen and more in what the absence itself suggests, a place once occupied, named, and mapped, now smoothed away beneath improved pasture.