What survives today is modest almost to the point of invisibility: a stretch of ivy-covered west gable rising barely a metre and a half above the ground, a fragment of the north wall, and at the eastern end, little more than a low scarp in the grass where the far wall once stood. The whole footprint measures roughly 8.8 metres east to west and 6 metres north to south, built of undressed limestone laid in courses with rough mortar, and stripped now of any architectural detail. From above, aerial photography picks it out only as a tree-covered patch within a large rectangular graveyard.

The history of the site is harder to trace than the ruins might suggest. The mid-seventeenth-century Down Survey, a systematic mapping of Irish land carried out between 1656 and 1659, shows no church or castle standing at Hopestown at all, which means either the church had already fallen out of use by then or was simply overlooked by the surveyors. By the time the Ordnance Survey produced its six-inch map in 1837, the building was firmly annotated as a ruin. Curiously, the 1913 twenty-five-inch Ordnance Survey map records the same structure as L-shaped, suggesting either additional fabric was still standing at that point or that earlier survey work had caught a phase of the building since lost. Around 310 metres to the south, the remains of Hopestown Castle and its bawn survive separately; a bawn being the defensive enclosure wall that typically surrounded an Irish tower house. The proximity of church and castle in the same small townland hints at a settlement of some local consequence, even if its origins remain obscure. Within the church interior, a grave belonging to the Glennon family occupies the western end, a reminder that the enclosure continued to serve a community long after the building itself had ceased to function.