The summit is notably grassy and conspicuously free of stone, a circle roughly seven and a half metres north to south and up to eight metres east to west, edged by a low, loose scatter of rock that rises no more than forty centimetres at its highest. That scatter is almost all that remains of what was once a house, its walls apparently built in the double-faced style with a rubble core between two outer skins of stone. Almost all of those stones have been robbed out over time, taken for field walls or other building elsewhere, leaving only a couple of set slabs at the north end that still sit in something like their original revetment positions. At the east side, a gap roughly two metres wide may mark where the entrance once was.

The setting itself carries some character. The hummock sits in enclosed land that slopes away to the east, giving the site a good open aspect towards the south-east and a view over Kinnacorra Point. A small marshy basin lies off to the north-east, and about twenty metres to the south-south-west there is a separate oval enclosure, a type of feature common in the west of Ireland that could variously have served as a livestock pound, a garden, or a small settlement enclosure. Whether the house and the enclosure were ever in use at the same time is unknown. No date can be placed on the house; the archaeology of Clare Island, documented in the 2007 Royal Irish Academy survey edited by Paul Gosling, Conleth Manning and John Waddell, records it simply as indeterminate in date, which on an island with traces of occupation spanning millennia is a designation that closes few doors.

For a visitor walking Capnagower, the house platform is the kind of thing easily passed over without recognising it for what it is. The greener, cleaner circle of turf at the summit, set against the rougher ground around it, is the main thing to look for. The low stone scatter around the rim reads almost like a natural feature until you consider its regularity and position.