What little we know comes from a single reference, and yet that sliver of evidence places the site within a broader story of eighteenth-century craft and commerce that shaped the city's working districts.

The source is Strangways, writing in 1913 and citing the year 1750, who notes the existence of a glass house on Lazer's Hill. A glass house, in the manufacturing sense, was a furnace-centred workshop where molten glass was blown or cast, typically producing bottles, window glass, or domestic wares. By the mid-eighteenth century, Dublin had a modest but active tradition of such enterprises, often located on the urban fringe where fuel could be brought in and the heat and fumes of the furnaces were less likely to cause complaint among wealthier neighbours. Lazer's Hill, a thoroughfare on the south side of the city, would have been a plausible location for this kind of light-industrial activity, sitting at a remove from the more fashionable quarters while still being close enough to the city's markets and quays.

The hill itself is now known as Townsend Street, having been renamed in the late eighteenth century, and the physical traces of any glassworks are long gone, absorbed into the fabric of a city that has been rebuilt many times over. For anyone interested in the site, the most honest approach is to treat it as a piece of urban archaeology in the imaginative sense; to walk the street and consider what it might once have contained, knowing that the documentary record offers almost nothing beyond that single line in Strangways. The National Library of Ireland and the Dublin City Library and Archive both hold material relating to early industrial Dublin, and either would be a reasonable starting point for anyone wanting to trace the thread further.