The lower frame holds an eighteenth-century mural tablet inscribed to Denis Commins and Mary Warren, dating their lives across the span of 1675 to the 1740s. The upper frame has nothing. Whether a plaque was never commissioned, or was removed at some point, nobody now recorded seems to know.

The church itself sits in a raised graveyard, the ground curving alongside its western side, on a site with a long drop to the south and a gentler slope westward. Its first known mention comes from the early fifteenth century, when a guild, formally called the guild of the fraternity of Our Lady St Mary of the Church of Mulhuddart, was incorporated, as recorded by Francis Elrington Ball in 1920. By the time of the Civil Survey of the mid-seventeenth century, the entry for Buzzardstown noted only the walls of a church, suggesting it had already fallen out of use by then. The building is constructed from rough-coursed shaley limestone with dressed quoins, the carefully finished corner stones that give some structural precision to otherwise irregular stonework. Its nave and chancel are undivided, forming a single long space, and entry is through a segmental-arched opening in the north wall. The western tower, which survives to first-floor level, is classified as residential, meaning it was designed to be lived in rather than simply used for bells or defence. The vault over its ground floor still bears traces of wickerwork centering, the temporary framework of woven branches used to support an arch during construction before the mortar set.

The tower's first floor retains a projecting turret on its south side, a window to the west, and two wall recesses to the north. The arch of the residential tower has suffered burning and graffiti in more recent times. Gravestones are present inside the church interior itself, not only in the surrounding graveyard. The site occupies a prominent position that remains readable from the surrounding landscape, though the steep southern fall means the approach rewards some care about footing.