We didn't start off treating this as a flip.

The "legal" prescriptions available to treat my Degenerative Disk Disease and Spondylolisthesis would leave me unable to get out of bed, sick to my stomach, and even worsen my pain. 

I am wanting to treat investing as a business and buy this way- as I have learned from owning a business.

Some people include their financing costs, some people include capital expenditure as a percentage of gross rental income (I never found this one reasonable since usually higher-end properties that command higher rent are treated better and cared for better than lower rental income properties), and then there are some people who assume that your expenses are limited to taxes, insurance and owner-paid utilities.  

Even though this is your primary residence, treat it like a business.

Should the Buyer start by requesting a copy of the Promissory Note & any Loan Modification Agreements, and treat those as the sources of truth for the underlying loan details? 

Most LLCs don't pay corporate taxes, regardless of where they are formed, unless they elect to be treated as a corporation for tax (rare that one would do that).  

She treats all of her tanants like family.

Hey Everyone hope the Holidays are treating y'all well.

@Mike Wood That's a great way to treat it--the savings account concept.