It sits north of the Carrignavar House demesne, a modest but carefully detailed building whose cut limestone window and door surrounds, cornice, and bellcote on the south wall suggest that whoever funded its construction had some ambition for it, even if the congregation never grew large enough to sustain it indefinitely.

Samuel Lewis, writing in his Topographical Dictionary of Ireland in 1837, recorded that a church had been recently built at Carrignavar by subscription, meaning it was funded through community contributions rather than by a single patron or institution. The building is rectangular in plan, with its long axis running north to south, which is an unusual orientation for a Christian church; the more conventional arrangement aligns a nave east to west, with the altar at the eastern end. Here, the gabled chancel, the section of the church containing the altar, sits at the northern end rather than the east. The west wall carries three pointed windows, and there is a porch on the south gable. A vestry occupies the north-east corner, and the chancel window features switch-line tracery, a form of late Gothic decorative stonework in which curved lines branch and reconnect to fill the window head with flowing geometric shapes. By around 1963, according to local information, the building had gone out of use. There is no graveyard attached, which adds to the sense of a place that served a functional need for a time and then simply ceased, leaving behind well-cut stonework and an open question about who attended and why the subscriptions eventually stopped.