Quick question: From your edits, it looks like Collège Durocher has 2 pavillons: Pavillon Durocher (this one) and Pavillon Sant-Lambert (the one south of here.

However, I see that the building here on what you've marked as 'Pavillon Durocher' is labelled 'Pavillon Saint-Lambert'... I'm not familiar with these 2, but it sounds like either you got them mixed up or the last person did. If you you're correct, then I think the name on the building should be erased.