What is the cost of replacing the roof?

What about one off appliances that fail and are replaced?

The biggest lesson that I learned was learning the lingo and what step there are to take, the components of the deal.

  $7600 later to have it decontaminated and replace everything permeable I am wiped out many years of cash flow. 

Even if your seller replaces the items you mention, you still have many items that will need repair over time.

Literally replaced almost every surface in both units.

I am wondering what kind of flooring is best to replace it?

I am wondering what flooring will be best to replace it?

Assume $7500 to replace. $7500/25 year life span/12 months in a year=$25 per month for the roof if new.

Finally, you can rip out the ceiling and replace it with new drywall, or, if the ceiling is made of plaster, you can remove all the plaster and screw up 3/8 in. drywall on the existing lath.But here’s a common scenario in 100-year-old housing which @JD Martin mentioned in passing : the popcorn ceiling is on the second floor of the house and the floor joist bays in the attic are filled with asbestos-contaminated vermiculite.