Mainly..termite damage, and old plumbing/mold. 

I hope you had a move inspection condition sheet or did one after you purchased the property, otherwise it's going to be hard to document any damages that may have occurred other than wear & tear. 

Has anyone had any experience doing an assignment of a lease purchase agreement on a property that has been damaged by flood water? 

Some people like to steer clear of that practice because of the potential damage it can do to relationships.

Great mechanicals.  2-3 shingles damaged from the storm this last fall. 

To many horror stories in the past will tell you this is a terrible idea.Repairs should be performed by licensed professionals with insurance to cover damages in case of problems.Never hire someone who can't be easily fired and held legally liable for poor work performance.

What if one of the units is burned, and the rest have minor damage as well?

The house is 3 level but the basement is not finished, it has a walk-out, electricity and AC, plumbing rough-in for full bathroom - in fact it used to be a fully finished basement but everything was told bare due to water damage a few years back.

Fill dirt is too loose to build on and lacks the hard pan need to build a foundation on without the the possibility of damaging the foundation by the weight of the house. 

House is in Sharon Hills.Concerns include giving former owner, say, a month but then they wasting my time and reigning on the agreement.Furthermore, there is the possibility of them causing property damage.