In most cases that is the benefit to the seller is buying something they no longer want to (or can't) pay for.

We would use the additional units to bring in the funds to pay the mortgage plus expenses.

You still keep your asset and you pay 0.Net result: Zero change besides your insurance premiums going up.Sorry, I'll take a PUP over an LLC any day of the week. 

Before you consider transitioning out of your role to become a real estate investor, get your first property under your belt and you will know almost immediately if the demand and drive it takes consistently is the right place for you to put your focus more regularly.

You could check county records to see who is paying the property tax.

I would focus on C and C+ areas in Dayton and buy something turnkey when starting out. 

Do you pay them a flat fee for each time they stop by the property to help the guests with something?

The limit is lifted, Purple Heart recipients (even if still active duty) no longer pay funding fee's, and several other changes.

I'm confused because he hasn't finished paying off his mortgage.

This was many years ago, but I was pulling in $3900 tax free for Berkeley BAH, and paying $1100/mo in rent, oh and unlike all of my classmates I wasn't going into student loan debt.