There are also horror stories about people loosing their property in Spain. 

I actually ended up doing a 1st position HELOC and removing the mortgage all together.

9) adding multiple ADUs or adding an ADU to a quad looses F/F conventional financing.

I know this seems low, but the way I see it, this is how much the buyer would potentially walk away with if they posted it on the market and minus all the fees and concessions so I am getting them to that number with none of the hassle and removing the issue of a looming foreclosure.

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. 

If the animal is a nuisance or causing damage, you can have it removed.

However, you can make changes as long as all parties agree.If the tenant agrees to removing certain clauses, or starting with a new lease, then you can move forward.

Just like @Mark Cruse stated I don't want to loose money every month on any investment.

Give them notice if their pets cause any infractions they will need to be removed in 24 hours.  

From experience with mechanical and utility issues in distressed properties, I would also wonder why the breakers were removed.