Thanks so much, Dmitriy, for your feedback and for pointing out the key criteria to be considered.

This is a key component of being a seasoned developer, and many times missed by less seasoned folks.~ Scott

You asked "legally" and my thinking is that if their stuff is still in the property and they haven't returned keys to you -- in a tenant-friendly Philadelphia -- that could come back to bite you.

If you find a smaller or new in business local agent they would probably jump at the chance to be your referral source for your tenants to get Renters insurance.

Source, I used to work for the SD Dept of Revenue and oddly enough, managed the staffer who wrote that document Kuba F linked to.

The key difference here is the buyer wants a property he can live in and enjoy for a period of time before converting to a rental.

They would prefer to replace the income the house is generating with another source.

Zeus Mortgage Bank, Jet Lending, Investor Loan Source and of course your local bank and credit unions. 

Ignore the emotional, you’ll find out the hard way some folks are like that and some lead sources aren’t the best.

The Foreclosure.com is just a source and not an actually strategy.