I think most turnkey providers say they only sell in quality neighborhoods but I would love to confirm this by a third party.  

I haven't slept yet, so I forgot about the other party wanting to invest in your project, but my prior content is still relevant.

Again, not common overall, but if you do find someone, do thorough and careful due diligence.Finally I never recommend completely abdicating title research to a 3rd party, even a title company.

I'm not sure why you think it's the other party's job to "bring these things up in the beginning", and I am not sure why you didn't bring it up in the beginning, if that was a condition of your bid.  

There is another possibility that a third party known to the seller may intervene contesting the contract being predatory.

When both parties agree to sell the property...."

Or the foreclosing party would have cleared it before auctioning, or will clear them off before giving the title to auction

The tenant and her 2 young kids live in a one bedroom apartment and the 3 of them all appear on the lease, which is currently month-to-month with 30 days written notice by either party (landlord or tenant).We recently learned that the tenant's husband has moved into the apartment and he is not noted on the lease or any other documents.

@Sean Cole I was not directing my comments at you specifically, and if you are providing value for those investors who are buying MLS deals from you, I am happy for both parties!

What I understand to be the biggest difference is the bank that gives the loan maintains responsibility of the loan and doesn't sell to a third party.