We will travel by air before cards expire. And For renewal of PR cards does it mandate me to have a Canadian address? I plan to submit cohabitation documents in her renewal application.
As already pointed out you will need to be in Canada to apply to try and renew LE cards but you need to declare your genuine current address which would be outside Canada. Those residing outside Canada are typically expected to pick up the new cards in person and to an interview which would mean returning to Canada again within 6 months of being notified that the cards were ready for pick-up. I would also anticipate that processing may be non-routine so could take significantly longer than normal to receive a response. If an application was straightforward then remaining in Canada for 1-2 months after applying may have been an option. If you have no plans on returning to Canada on a permanent basis this becomes both time consuming and expensive to get an essentially a travel document. Getting approved once also doesn’t mean that approval is guaranteed on subsequent applications.
