The monument consists of two roughly rectangular enclosures sitting side by side, sharing a dividing fosse between them. The western enclosure measures approximately 45 metres from north-northwest to south-southeast and 41 metres from east-northeast to west-southwest, covering an area of about 2,290 square metres. Its eastern neighbour is slightly larger at 2,392 square metres. While the River Goul once flowed about 100 metres to the west, a channel dug sometime between 1839 and 1900 diverted its course to within 10 metres of the site.

Archaeological surveys have revealed traces of both external and internal banks, along with a dry moat that was once 2.6 metres wide and 1.5 metres deep. The first edition Ordnance Survey map from 1839 shows three buildings within the western enclosure; one oriented east to west in the northeast sector, another running north to south in the eastern sector, and a third positioned east to west in the southwestern area. These structures, likely dating from the 18th or 19th century, appear to have been built long after the original medieval earthworks. Dry stone wall remains from two of these later buildings were still visible when the site was documented by Barry in the late 20th century.

Unfortunately, by 1987 both enclosures had been recently levelled, leaving only a slightly elevated stony platform rising just 20 to 30 millimetres above the surrounding drained land. The site had also suffered considerable erosion from cattle grazing. Despite these changes, the moated site at Warrenstown remains an important piece of Ireland’s medieval landscape, offering insights into how these defensive earthworks were adapted and reused by later generations.