contacting lender on pre-foreclosure doable?

[Loni Anderson]

Would like to tap into acquisition through foreclosure and wonder, besides reaching out the to home owner directly, is it possible to contact the lender themselves?  I realize also that there are foreclosure 'clearing houses', (trustees? custodians?) who manage the assets too.  Are there any restrictions, rules or common practices in the industry to tap into this inventory.  Ideally without paying for a list guys.

Thank you for your help and suggestions.