Hi Fergusonweb
As has been answered below, the best course of action is to speak to a local attorney. I would seek out one that specializes in Real Estate Law or Estate Planning. They will be able to assist you in preparing the note and mortgage that will meet all local and federal regulations to accomplish what you are seeking to accomplish. You might also want to consult an accountant for any tax planning consequences for either you or your son and daughter in law. It's always better to plan ahead than be surprised by a consequence that was not forseen when doing wonderful things even with your own money :) - Thu May 10, 2012