This FSBO paperwork is needed as soon as you accept an offer, so it's useful to have a purchase agreement onhand that you can fill out quickly. These computer programs ask you questions.The program then uses your answers to make a form for your case or to make an information sheet to help you in court. Selling your home FSBO? These forms are the legal documents the buyer and seller sign, putting the buyer's offer in writing and completing the transaction. These are the official forms for use in Family Court proceedings. Read on to learn what you need to do to prepare, techniques to qualify buyers. New Jersey requires those selling FSBO to fill out and file many documents and forms. Several of these documents are legally binding agreements.