Two of the structures are considered definite; a third is provisional, its stones possibly marking internal divisions within the enclosure rather than the walls of a separate dwelling. That ambiguity is itself part of what makes the site interesting.

A ringfort, to give the term some context, is a roughly circular enclosed settlement of the early medieval period, typically defined by an earthen bank and ditch, and common across Ireland. The structures at Eastwell sit within one such enclosure. The first house foundation abuts the inner face of the ringfort's south-eastern bank, forming a rough rectangle measuring around 7.2 metres by 4.2 metres, its southern, western, and northern sides still defined by large moss-covered limestone blocks. A second, smaller and more poorly preserved foundation sits against the bank to the south, roughly 4.2 metres by 3.8 metres, irregular in outline and defined by smaller limestone blocks, much of it overgrown. The third feature, south-east of the ringfort's centre, consists of two contiguous wall lengths forming an L-shape on plan, with a long axis of nearly ten metres running roughly north to south, and a shorter arm of 5.6 metres extending eastward. It is this last feature that archaeologists have hesitated to classify with any confidence, noting it could as easily represent a partition or internal division as a freestanding structure. No date has been assigned to any of the remains.