But the true value has to be tied to what creditworthy buyers are willing to pay with bank loans on comparable houses in the area.

Couple that with the housing shortage due to hurricane damage we have in this area and the skyrocketing cost of housing, and there couldn't be a better time to list a vacant duplex-If you have equity in the property as it sits, and you're creditworthy while she isn't, now is also a great time to start a new investment with your equity from the sale and move on without the added difficultiesManaging a property yourself is already hard.

The creditworthiness of the borrower is still important and most lenders will underwrite any individual that has control over the asset. 

The refi won't go through because we have all managed to find our selves in position of not being credit worthy.

A seller cannot dictate credit guidelines to a lender, and the lender needs written guidelines and credit matrix and their own process for discovering the credit worthiness of any applicant.

The lend more on the value of the "Hard" asset more than on your creditworthiness. 

We’ve decided to part ways but I’m unable to assume the loan because I don’t qualify for another FHA loan and my creditworthiness isn’t the best at the moment.

Never mind they really wouldn't make a jot of difference in my currently credit worthiness. 

For proof of creditworthiness the buyer is only offering current bank statements and proof of having paid off a seller financed loan before.

This is what you will use you build credit worthiness.