You are not being fair to either yourself or your neighbors by letting them stay.

Fair point 

With everything else, Amazon can give you a fairly exact delivery date. 

This specific guest was a physician and sounded as though he had a fair amount of personal income that could be used to support his property.

In this case, I think it's fair to call it a scam. 

Depending on how upscale your finishes really were, you could have that built in this market for 300 to 325 per square foot fairly easily right now.

Ten years ago, there was almost zero code enforcement so you have a bunch of nonsense that you may not catch with pre-existing stuff and you may get hit with some monster issues down the road. 

That's a very fair proposal in my opinion and I would definitely have your contractor do it as opposed to someone else's

If you get past that, it is a fairly easy process.

they probably have a bunch of 3% nonconforming loans on their balance sheet so 5.5% is not bad, totally reliable payments, plus in a legal battle they'd likely find the power of attorney didn't extend to the ridiculous term and that there was no breach of any enforceable agreement.