No one knows exactly where it was. What survives is a single line in a mid-seventeenth-century survey, enough to confirm the house existed, but not enough to place it on any map with confidence.

The record comes from the Civil Survey of Dublin, compiled between 1654 and 1656. This was a systematic effort by Cromwellian administrators to document land ownership across Ireland, partly to facilitate the redistribution of land following the wars of the 1640s. The survey noted that in Garristown, on the lands of one Margarett Bath, also recorded as Goulding, a widow described as an Irish Papist, there stood "one house with a backside worth two poundes." The term "backside" here refers not to anything architectural but to a yard or enclosed ground at the rear of a property, a standard usage in early modern Irish surveys. The valuation of two pounds gives a rough sense of the building's modest scale. Margarett Bath alias Goulding is otherwise unrecorded in the notes available, but the double surname suggests she may have been known by both a birth name and a married name, or possibly remarried. The survey was published by Robert Simington in 1945, drawing the entry back into scholarly view after three centuries.

There is no structure to visit here and no site marker. Garristown itself is a small village with a medieval parish church and a history stretching back well before the seventeenth century, but this particular house leaves no visible trace on the ground. The interest lies entirely in the documentary record, a reminder that rural Ireland was once full of modest domestic buildings that have vanished without ruin or foundation, known now only because a colonial administration needed to count and value them. Anyone with an interest in early modern land history or the Civil Survey as a source might find the Simington volume worth consulting; it remains one of the more detailed windows onto who held land in Dublin in the years immediately following the Cromwellian conquest.