Calgary was barely even a city at that point.

I remember being a student in Venice, where we used a 16C building that had been reimagined in the 1960s by a famous architect and again in the 80s. We got a lot of US architecture students visiting the building. One of them was telling me how much value it added if your building was listed

For him, a listed building probably comes with electricity and plumbing installed I'm in the UK. One of my friends lives in a 15C building with no actual foundations. It floods like a bastard I think English Heritage also approves every repair or improvement, and that's spendy