Debt collector & wholesaling

[Daniel Murphy]

Hey all, 

I good friend of mine has a successful commercial debt collection company.  My thought was, they have people, systems & unique access to personal info that is harder to come buy on a small scale.  

I asked if they could use the tools to search people who are in pre-forclosure, delinquent on property taxes etc.  His answer was, "I could probably find that info but I don't know how to look."  
Does anyone have knowledge or experience of how I could leverage this relationship to help find deals?