Originally Posted by xeno000
People point out that Tony gave out his address in IM3, but Mandarin and anyone else who wanted to know where he lived doubtless already did. He's the type to be on every "entertainment" tabloid show, with photos of the house in magazines and even on Google Maps. Besides, Killian/Mandarin would have to be pretty stupid if he couldn't track Tony down there or at that skyscraper with the giant "A" on it that was ground zero for an alien invasion. The challenge was just a trigger for the mansion attack.
As for the Maximoff house, it just strikes me as strange that the notoriously prickly and standoffish Quicksilver would have his name on a mailbox like that, no matter the time frame.
that's assuming that it's his house; as opposed to his adoptive parents.