For example"The mortgage on the home is $100,000.The seller has paid $20,000 of it down.The remaining mortgage value is $80,000.I assume the $80,000 mortgage.Does the seller lose the $20,000?

A large portion of your net worth will still be staying tied up in the stock market even after selling much or all of your brokerage account holdings to invest in real estate.

This way they get 80% of the value in 30 days after closing and then the remaining 20% in 5 years when you refinance. 

Branch locations across all 3 cities needed for this bank are the primary driver for this account.I then have a checking and savings account at a different local bank for the remaining properties in my home state.

Ideally buying out the third partner's interest would not trigger a 'sale' and a change in the basis for the remaining two partners. 

Perhaps consider a house hack by purchasing a 2-4 unit property, living in one of the units, and renting out the remaining units. 

According to the After the TDS is delivered to the buyer they have 3 days (if delivered in person) or 5 days (if mailed ) to cancel the contract The law does not tie the delivery of the TDS to the inspection.

They don't care that you are transferring ownership, because you retain majority ownership and you remain personally liable for the loan.

I am in the process of tying up loose ends that the appraiser pointed out on the property.

Also be sure to read up on the legalities of bringing passive investors into a deal and what it takes to remain in compliance.