Thanks for the response. Yes, they do... And yes, I think I've been overpaying, am in the process of filing revision of assessment but it takes a week or so to get the old mortgage interest records from the bank. Hopefully it all works out.

I don't think I owe property taxes or need to file (we already pay land taxes separately), as we don't rent it out (I live in the property I own). Pretty sure of it as I received the forms and it clearly says that we can ignore it if we don't let out / derive rental income from it. But feel free to point out if anyone knows more otherwise... will triple check suppose I don't want to run into another issue...