Thanks! As it's shown now (after my edits), it's accurate.

It's technically one building, but it's a semi-detached house. Older maps reflect this properly (https://wiki.openstreetmap.org/w/images/7/72/OS_1904-1951-_Clonmel.png), but newer maps either show it as one single property or show it as two but only label the entire area "Greenpark" without making the distinction.

The mapping data for this whole area wrt house names is very poor for some reason (this isn't a problem limited to OSM by any means).