Like upgraded electrical, heating, ventilating, air conditioning, plumbing, ADA, etc...Where this comes into play is if say a tenant of one apartment unit sets his unit on fire, burns it up and now you have to go in to rebuild his unit. 

Make sure you have good insurance in case she burns down the house.

I don’t want to pay any commission either but I don’t want to just drop our agent and burn any bridges.

You don't want to relax your standards and end up getting burned with a costly eviction down the road. 

Sometimes people tend to think that all military members are saints, and won't possibly do anything to burn them. 

Burn them.

Addressing the problems is like trying to put out small individual fires in a forest that is burning.

C) So with your income and I assume net worth, you don't want to burn through those borrowing a small (to you) amount of money.

From what I can tell so far, the house could burn to the ground and the fireplace would remain standing in the ashes.

Real estate is a team sport, and there is no way any investor can do it all on their own, unless they want to burn out.Don't consider moving up, you are already at that point.