I have a property manager actually do the showings, but any issues like plumber , electrical is a phone call away.The only challenge is it's a commercial loan, which requires more down, higher rates and shorter terms. 

I guess ive heard, read and watched horror stories about squatters that’s why Ive been overthinking about it.  

I actually work in Huntsville on the base.

I guess you also decided other people should back their claims while you pretend you have some idea what you're saying."

This can tell me a lot about the age of the plumbing, roof, HVAC, etc before actually walking it.

What you generally care about, however, is the actual & current revenue.Once you start to focus in on a property that looks like it might be a good fit, the next conversation is with a commercial mortgage broker (I would be one example, among many) to go over what the financing of that property might look like.

Like, an actual PM? 

However, I talked to my realtor who got started in real estate via room rentals and he shared that as a 'border income' situation you actually have more rights than a traditional landlord.

How to prove that the water actually entered through the foundation crack?

I guess I am more just trying to understand it all and understanding what possibilities could be out there and what would have to be done or would be best for me.