Mostly it is fear of the unknown that seems to be stalling you.Pay the tenant to leave.

The numbers below present exactly how I see the situation in real life, except that I am using 5 properties in place of 10 for simplicity.Note: This would be a service to all those who cannot receive a conventional loan for unknown reasons, often unfair reasons for sure, as they are contributing members of society who have never done wrong to another.

Part of the general downside in tax liens is that your money is tied up for a generally unknown amount of time

I have an update:Update #1I was super excited to find a possible 3 flat building, which was newly listed on MLS, But my excitement quickly turned to horror as: Unknown property conditions of 2 occupied unitsOlder, possibly original, electrical wiring that needed updating immediately (vacant unit had 1 electric outlet per room)Seller is deceased, estate now held by sister who lives in New York, who has never visited buildingPossible water/roof damage as warping and thick cracks appeared in stairwells/wallsOlder, leaking windows Questionable plumbingBIGGEST DEAL KILLER: EXPOSED ASBESTOS WRAPPED AROUND ALL PIPES IN BASEMENT!!!!

However, you disturbed the pipe that was previously unknown to even exist.  

My grandfather and his son have stated that they are working on having title transferred to both of their names (details of this unknown but I would assume they will be taking title as joint tenants).

As others have mentioned, still lots of unknown variables.

Law enforcement will confirm fraud as well as the bank but most likely it will be from some foreign country unknown  person

Address unknown-or what?

I know the specifics are unknown but when you mention longer construction time or more costs associated with the project why were these two an issue?