Also, I think if I want to raise the sunken floor then I have to also raise the attached closet and master bath as well.

He’s also quoted me a 6.xx rate attached.

If the friend's unit is not your rental unit, there is nothing you can do, other than be happy that you now know where to serve the evicted man if you plan to sue him in small claims court for your damages (assuming that he has wages to garnish, or assets to attach). 

The first part of the puzzle would be to have robust General Liability coverage attached to your rental property insurance with a high limit ($1M).

Brand new to RE, but I'm ready to firmly plant my feet and begin moving forward. About 5 years ago, we (my wife and I) really took control of our finances and I worked relentlessly to understand our avenues for retire...

this was an easy one seller needed a certain amount which we were able to guarantee him , we had leverage on the buyer because the buyer owned 2 properties that were attached to this one .

@Steve Keirn my house hack is a 2,000sqft 4-bed 2.5-bath recently renovated townhouse with two apartments attached that cover the mortgage.

Balance sheet accounts(cash for example) don't need to be property attached.

Better option there is door knocking and creating a systematic attach and approach.  

I am fairly certain that zoning has been amended to not allow new separate structures for living purposes - must be an attached addition.