So the elevators will be in some sort of common space shared by the two stores? Is that legal?
I'm not sure that the elevators will be in a common space. They are towards the west end of the building and are likely to be part of the Hudson's Bay store. I speculated that Saks might get its own elevator(s) towards the east end, but I'm guessing not.
Remember, this isn't really two stores. It's two banners, same owner - people will have easy access from one end of the building to the other. The recent set of accessibility amendments to the Ontario Building Code require that there be elevator access to all floors in a building, but I don't know that they require that each tenant/space have separate elevators as long as people using any part of a floor have access to the building's elevators (which, from the descriptions of the Saks/Hudson's Bay build out, sounds like it will be the case). I'm no Building Code expert, though, and I also have no idea to what extent the Hudson's Bay building would be grandfathered (if at all). I don't know if the Building Code even contemplates a situation where a building's footprint is effectively an entire large city block, and the elevators are towards one end of that block. It's an interesting question you've asked.