According to the parcel map on open.regina.ca the land all the way back to the alley is a single property. It is probably common for commercial properties that have a mix of multiple leased buildings and undeveloped areas.
Added some more photos from today:
https://www.flickr.com/photos/regina...7720325409071/ A new rental development is getting started on north Courtney in Rosewood, shockingly its another Avana project, just staged equipment at the moment.