Except that it was built in, I'd say, the 60s/70s--i.e. long before PoMo. It's more like a suburban big sibling to St Josaphat off Dupont (pictured earlier in this thread)--and as such, might be more comparable to the neo-expressionism of Quebec's "Quiet Revolution" modern Catholic churches by D'Astous, et al. (Or New City Hall, or Uno Prii's apartments, etc.)
Now, if it were a quarter century newer, it might have wound up full-bore faux Byzantine bathos, so be glad it had whatever "contemporary" pretensions...