You were looking for good negotiation books from the community, so, here's a quick list, in my opinion,  of what a good book should cover:   Good negotiation books (and training) tend to focus on sound communication and extracting data so you can make everyone's life easier-- yours, and your adversarial partner's. 

Technology has enabled communication with a remote CPA through phone calls, emails, skype etc.

House hacking would enable you to have a lower downpayment %, plus lowers the reserve requirement to 1-2 months. 

In my opinion, a real estate license will enable me to work as a bird dog, making commission on every referral that I do.

(I have none right now) I've found out that my business expenses on my tax detail from last year were a bit too high to enable an approval to refinance.

We are in cash even though there is no return today cash enables you to quickly take advantage of an opportunity if one arises.

Go look at soil vapor extracting costs/ sparging/ lawsuits... 

In regards to extracting a capitalization rate from comparable sales.

Ideally, the after repair LTV will be aggressive enough (<80%) to allow refi to conventional and extract enough cash to repeat while eliminating PMI.

They are not yet in foreclosure as far as I know, and I don't know at what point they'd go into foreclosure, but surely they cannot continue to live in the house without paying taxes and have there be no consequences.My wife and I have advised her mother not to pay the back taxes on the house again, because that would only enable the "ingrates" (as my wife calls them) to continue on as they are, and my mother-in-law is retired and on a fixed income, and she simply can't keep forking over a couple of thousand dollars every couple years to prevent the loss of her family home.So.