Most people pass it without a second glance. The building at No. 9/9A, a four-bay double pile arrangement, meaning it runs two rooms deep rather than the single-room depth common in smaller terraced houses, has been dated by dendrochronology, a method of establishing age through the analysis of timber growth rings, to no later than AD 1664. That date puts it ahead of the wave of rebuilding that followed catastrophic fires elsewhere in these islands, and it predates the Georgian reordering that would eventually smooth over much of Dublin's earlier urban fabric.

The building was part of a planned estate developed by Francis Aungier, who gave the street its name, and its construction made use of timber framing or cagework, a technique in which a structural timber skeleton is infilled with other materials, here including lime-washed timber-stud walls. A Historic Structure Survey carried out by Mesh Architects in 2012 found that a substantial amount of mid-17th century material remains intact inside. The carved timber staircase is among the more striking survivals, with thick moulded handrails and turned vase-shaped balusters of the kind fashionable in that period. The second floor retains its original integrated, moulded door surrounds. The facade was rebuilt around 1881, and that intervention removed the original roof, but it left the interior largely undisturbed, which is precisely why the earlier fabric endured.

The building was added to the Register of Historic Monuments on 3 August 1996. Aungier Street is straightforward to reach on foot from St Stephen's Green or the city centre, and the building sits on the street frontage, so its exterior is visible to anyone passing. The interior survivals are less easily seen without a specific reason to enter, but knowing they exist changes how you look at an otherwise unremarkable Victorian-fronted facade. The staircase and the door surrounds on the second floor are the details worth holding in mind, quiet remnants of a city that existed before the one most visitors recognise.