A pedimented villa, meaning a house with a low triangular gable above its main façade in the classical style, once occupied this part of Dublin's south city, but it was demolished in 1981, leaving little trace of a building that had stood for well over two centuries and worn several different identities in that time.

Willbrook was built around 1740, placing it firmly in the Georgian period when such villas were fashionable retreats on the edge of the city. The pedimented form was typical of the era, a modest nod to Palladian ideals that were filtering through Irish domestic architecture at the time. At some point in the late eighteenth or early nineteenth century the house was altered substantially, when it was converted for use as a convent. That transition from private villa to religious house was not unusual in the period, as religious communities, particularly in the decades following Catholic Emancipation, often acquired and adapted existing gentry houses rather than building from scratch. The alterations that accompanied Willbrook's change of use likely reshaped its interior considerably, though the records documented by the Knight of Glin, D. Griffen, and N. Robinson in their 1988 survey do not detail exactly what was changed or when the convent use ended.

Because the building no longer exists, there is no site to visit in any conventional sense. What remains is the record, and for anyone researching the lost domestic architecture of Dublin's southern parishes, that record is worth knowing about. The 1988 publication in which Willbrook is catalogued offers one of the more systematic attempts to document what Georgian Ireland built and what the twentieth century chose to remove. The demolition in 1981 came during a period when many such structures across Dublin were lost to development pressure, and Willbrook sits quietly in that longer inventory of things that were considered dispensable until they were gone.