@Francois D.
We have this one investor my partner and I work with from time to time who buys non-performing notes, so he gave us a list of delinquent properties, to see if something can be worked out the owners (cash for keys, short sale, short pay, etc.)
We were driving on this block in Long Island, trying to find a particular property on the list, but it was one of those streets where the house # didn't ascend or descend in the usual orderly manner, and a lot of houses didn't have any visible house # either, which is why we had a hard time locating it. Then my partner spotted one with a U-Haul truck parked in the driveway with boxes all over the place, so we immediately knew we had finally located it.
As we were approaching the front door, the owner happened to come out to get his mail, so I introduced myself letting him know we work with so-and-so who bought his mortgage note, which is in default, and asked him if he had recently contacted the bank to do a short sale, since he started packing. (for those not familiar with short sales, the owner might've told the bank they want to do it, but it may take some time for the note holder to get notified).
He asked "why would I do that?" I replied "because your mortgage is in default."
Owner seemed really perplexed. "But I just paid my mortgage last week." To clarify, I repeated his address to him, at which point he let a sigh of relief and said "that's next door."
Needless to say we apologized and knocked on the correct door. :)