No Title before the Renovation

[Lamont Marable]

I have a seller that wants to do seller finance with great terms.  Market interest rate, 10-20% down.  He is selling the property for 90k but willing to finance it for 100k.  How would you negotiate that?  Also, when doing seller finance, do we simply go to a lawyer and have a promissory note drawn up?  We steps are involved with seller finance?

Thanks.