Duplexes with out of town mailing addresses?

In the recent podcast with Ben Kinney, Ben suggested looking for duplexes and small multi-families with out of town mailing addresses, e.g., maybe a property that someone inherited and is more likely to want to get rid of. How does one find listings with out of town addresses?

https://www.biggerpockets.com/blog/biggerpockets-podcast-322/#comment-282895