Ahhhh yes you are correct I see it now in the station renderings.Looks like the City to me.
The lot lines on TOMaps show it as part of the Eglinton Avenue East ROW.
View attachment 349125
The pink line near the top of the image is the south limit of the new bus terminal.
The pink line at the bottom is oddly placed, but would be the Eglinton ROW on the south side.
The box with 1180 is rather confusing..........
City ownership would make sense here, as the Eglinton/Don Mills interchange was conceived as a future expressway-style flyover, which is why the City owns the parcels on the south side (ramps)
We have to wonder are there any pedestrian tunnels or relocated utilities under that space.