3 Essex Gate, in the older grain of Dublin's south city, there is a building that resists easy dating. Its form belongs to a type that was already going out of fashion in much of Europe by the time Dublin was still busy constructing them, and the question of exactly when this particular example was raised has never been settled with any confidence.

The house is identified as being of the Dutch Billy type, a label applied to a style of urban domestic architecture that arrived in Ireland during the late seventeenth century, broadly associated with the influx of continental influence that followed the Williamite period. Dutch Billy houses are recognisable by their tall, narrow profiles and distinctive gabled rooflines, the stepped or curved parapets rising above the street in a manner more common to Amsterdam or Antwerp than to the Georgian terraces that would later come to dominate Dublin. They were once widespread across the city, filling streets that were subsequently cleared or rebuilt, and relatively few examples survive in any recognisable form. The dating of No. 3 Essex Gate to the late seventeenth or early eighteenth century was offered by archaeologists Linzi Simpson and Ed O'Donovan in November 1997, though the absence of firm documentary evidence means the building's precise origins remain open.

Essex Gate takes its name from the old city gate that once stood at the boundary of medieval Dublin, close to the meeting of the Liffey quays and the older street network pushing south and west. The area around it is dense with layers, and the building sits within walking distance of Wood Quay and the surviving fabric of early modern Dublin. It is not a building that announces itself, and there is no interpretive signage to guide the eye toward what makes it architecturally significant. Visitors who know to look upward will find the roofline the most telling detail. The Dutch Billy gable, where it survives intact or partially intact, is the feature that separates this type from the later brick terraces around it, and it rewards a moment of quiet attention rather than a passing glance.