I live in Toronto: Runnymede station specifically is in a very built up area, and there's not a lot of elbow room to work. Do a Street View of 265 Runnymede:
The original criticizing GP also assumes that it was a "simple renovation": is this a valid assumption? For example, how do you get a bunch of new elevators installed:
* https://www.google.com/maps/place/265+Runnymede+Rd,+Toronto,...
* Opposite end: https://www.google.com/maps/place/260+Kennedy+Ave,+Toronto,+...
The subway in that area was built in the 1960s using (AFAIK) a cut-and-cover method, so it's not every deep below the surface:
* https://en.wikipedia.org/wiki/Line_2_Bloor–Danforth#Subway_c...
* https://en.wikipedia.org/wiki/Tunnel#Cut-and-cover
The original criticizing GP also assumes that it was a "simple renovation": is this a valid assumption? For example, how do you get a bunch of new elevators installed:
* https://ttc.ca/Service_Advisories/Construction/Runnymede_EA....
Drilling multiple elevator shafts seems more than a "simple renovation".