There are tons (like, really many) of empty, closed rotting buildings in Lisbon. My assumption is the owners are waiting for prices to increase or simply demanding unreasonably inflated prices until they find a buyer. I'd like to know the reasons for it. Anyway, whole blocks are empty. Heck, there is a large empty building directly next to the German embassy (and, ironically, part of the German embassy is also abandoned and empty even though it belongs to it).

There is also a substantial number of new luxury apartment buildings in my area with apartments that appear to be empty. Whether they are owned yet or to be sold is hard to determine but you can see when nobody lives there.