Are there particular units/buildings that continually have damage?

One big block of text?

I'm going to try and talk reason to the tenants and get them to move out peacefully.During their occupation of my property, there was severe water damage to the upstairs kitchen and downstairs bedroom.

We inhale water vapor that is laden with nicotine, the nicotine is absorbed by our lungs, and we exhale the water vapor, which dissipates back into the air from which it started.It is completely harmless to your apartment, will cause absolutely no damage, smell, nothing.

How do insurance companies typically deal with fire damaged houses? 

What would they pay for their neighbors' house, or the best house on the block, for example?

The heat pump works fine but is at least 20 if not 25 years old, the house also has some big trees too close to the house where big branch's have already fallen off the tree and have done damage to the roof in the past (I can tell by the patched shingles). 

I am adding a bedroom, bath and egress window to my 1930 1.5 story bungalow within blocks of Hamline University in the Hamline-Midway district of St.

Water causes so much damage.

If you're doing a side deal and borrowing the funds for the down payment and then paying investors back, they're really going to frown upon it (they don't want any of the down payment to be borrowed, and will question any large deposits coming into your account).Also with a multi unit that I assume you'll be renting out, make sure you have cash reserves for the unexpected (evictions, damage, code changes, etc).Good luck!