Since you want to buy a multi-family, listen to my podcast interview as I reveal my worst investing mistake (I bought a 36-unit apartment building) and how I turned it around (by buying a 100+ unit apartment complex!).

A few weeks later the listing agent reveals that a junior lien had not been released so there was an additional delay. 

Does this reveal my identity as the owner of the property.

Thank you for the info @ Jenkins Ramon.The Wholesaling article was really revealing.

If perfect, all the landlords expenses are paid for but digging into leases reveals caps on certain expenses (property tax, insurance) or CAM, or certain parts of it, can be excluded from one tenant but added to another.Make sure you have your attorney complete analysis of the leases prior to the end of due diligence.  

It's revealed that the tenants were in cahoots with a former receptionist at the PM and they had brought crying kids in with them to contest their(my) posting a NTV.

Also, the inspection revealed that there was a problem with Radon gas in the basement.

A five minute search on BP will reveal numerous people whose ADU was valued significantly below the cost to add (or at least the hands off cost to add).

It could be someone with a good credit score who gets paid (part of her/his income) in cash and cannot qualify for a loan without revealing undocumented income.

The other thing, is that once you get an inspection that reveals a cost that you did not see up front, you can renegotiate.