I concur! I've never been to San Francisco, but I'll take your word for it. It must have been some suburb. ;) (not at all a mansion on Davie St. in Vancouver)

I think saying it SFU was an inside joke. Though, that's what I thought when they had Sioux Falls University - only, I discovered there actually was a University in Sioux Falls...but yeah, SFU isn't that far away from the Supernatural Studios, so I'm fairly sure it's a little joke.