Creative ways to find distressed luxury homes (1mil+ ARV)? Tampa

[Blake Bronson]

I've done a brief search on the forums and haven't found much regarding what I'm looking for- 

Met a buyer who likes to deal with luxury properties in Tampa Bay, as that's what he's most familiar with. I do wholesale with investors but I've never looked for rehab deals in that kind of price range and I'm not too sure where to start. What are some creative avenues I can take to find off-market properties that would fit this criteria, or good connections I could make to find some of these deals more organically? REO agents, foreclosure, etc? This buyer obviously has a well-connected network and access to the MLS so I'd love to find him a deal not readily available.