The less time you have, the more relationships and partnerships will be vital to you. 

According to the inspection report, there are 3-4 layers of existing shingles under the newly installed roof.

From my view, it sounds like vital information was provided to the landlord of the premises. 

Usually the next hurdle is off street parking, around here 2 off street parking per unit is common though some places are requiring 2.5 or 3 per unit.Next is code issues including fire separation;  the 2 units need to be separated with a fire barrier, usually they will accept 5/8 or 3/4 inch drywall; or double layer of 1/2 drywall. 

All that being said, it is vital that you work with a securities attorney to make sure you CYA (cover your a$$) from every angle; as @Brian Burke stated, jail time is at stake.

and a vital portion of my financial strategy). 

I know there is two types of oxygen barrier from pex, one has the aluminum barrier infused in an inner black layer and grey outer layer, the other does not, and has a different type of barrier but it is 2 separate walls.

both the buyer and the seller must be equally considered, and vital for me to get the repair estimate right so that I make an offer that works for the seller..gotta study up on my numbers

However, I have litigated several cases in my state where the standard form lease from the association left out vital information such as cost shifting.

We are considering doing insulation on the ceiling with two layers of 5/8 drywall with green glue in between.