A mortgage which allows you to transfer the amount and terms over to a new property without cost or penalty. The mortgage will, of course, have to be registered on title of the new property, so strictly speaking it is not identical in all respects. While most mortgages have a portability feature, in the event you might need more money when you transfer the mortgage over to the new property, make sure you either have the right to blend in any new funds required, or can arrange the additional funds separately.