Of the original rectangular building, only the west gable still stands to its full height, with brief stubs of the north and south walls returning from it, measuring roughly ten metres across. The gable carries a steeply pitched profile and leans very slightly outward at its base, a feature known as a batter, where the wall face slopes gently away from vertical to improve stability. At its centre sits a single window with a two-centred pointed arch, the kind of Gothic form that persisted in ecclesiastical building long after the medieval period. Notably, the arch surrounds are formed from ordinary masonry rather than dressed cut stone, which gives the whole thing a plain, almost provisional quality.

The ruin reads, in its overall character, as eighteenth or nineteenth century work, which makes one detail in the north wall all the more curious. Built into the top of that short surviving return is a re-used block of distinctly late-medieval appearance, suggesting that whoever raised this building had access to, and made use of, material from an earlier structure on or near the site. The church sits within a graveyard and was, in all likelihood, a private chapel associated with Castle Cooke, the country house nearby. Private chapels of this kind were common adjuncts to Anglo-Irish estates, serving the household and often doubling as family burial grounds. The sandstone from which it is built is laid in rough courses rather than fine ashlar, which suits the modest, functional character of what was probably never intended as a grand architectural statement.