If you're going to do a lot of D4D, then you might want to have that, too.When I do D4D, I use PropStream to locate a number of properties in a small geographic area. 

We were in a financial position where we could keep our existing home, upgrade, and purchase another home.

You would have to go after the one individual for non-payment and you could only remove the other three by going through the legal process like you would for someone on a verbal agreement, which puts you in a he-said, she-said situation. 

You all must agree to the same thing or else you will just end up fighting about what to do.Since your mom doesn't have it in a living trust, I suggest you do that right away.

It is fairly easy to prove that the sleazy and less experienced sub to people had ill intent, they keep a fairly detailed record of their doings in a Facebook group and are easy to find elsewhere.

Real estate in a 401(k) is less liquid, so keep cash reserves for repairs or vacancies.

Or is it in a cellar or other mechanical-room area?

If a tenant (friend) needed to move, I wouldn’t want to be in a bad situation financially.

Of those four, two were lowered in a subsequent appeal. 

If a tenant (friend) needed to move, I wouldn’t want to be in a bad situation financially.