abandon property

[Amber Castro]

Please help me with the steps, I drove by a home that looked abandon so I pulled over went to the door and knocked.. there was a paper in the window that actually said the home was being treated as abandon although there was a mattress and other junk looks like someone is staying there I wrote down the address and went to pull a property report from realquest and pulled up zillow realquest shows the home is in foreclosure and zillow says its not for sale... what can I do now? I want this house (for rehab) but don't know what to do next.. do I call the bank? do I try and locate the owners? HELP