By 1700, a contemporary account described the building as constructed of stone and clay, with the walls almost entirely fallen except for that western end. More than three centuries later, the same gable still stands, rising to around four metres, though it is now so heavily clad in ivy that a small oblong window opening, which the ecclesiastical historian Power recorded in 1917 as splaying inwardly from the wall face, has been completely swallowed up and is no longer visible. The rest of the church, a rectangular structure measuring roughly twenty metres east to west and seven metres north to south, has fared worse. The northern and eastern walls survive only as low, sod-covered foundations, a fragment at the north-east corner reaches just over a metre in height, and the southern wall has been destroyed entirely by the encroachment of graves over time.

The building served as the parish church of Ardnageehy, and its decline was well advanced long before any formal decision was made about its future. In 1797, the site of the parish church was officially ordered to be transferred to Glenville, the existing Glenville church some distance away, yet even at that point the Ardnageehy building was noted as having been many years in ruins already. Power also recorded the presence of a small, nearly square holy-water stoup or font somewhere within the remains, though its location could not subsequently be confirmed, and it has not been found since. The church now sits within a graveyard that has continued in use around it, the graves themselves having reshaped what little structural evidence the south wall might otherwise have left.