No. TREC is unable to advise you on how to fill out a private contract form. You should direct your questions to your sponsoring broker.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. This guide includes forms and instructions for a letter and affidavit to request that the court register an outofstate custody order in Texas. Selling your home FSBO? Have the offer and contract forms available for potential buyers. One property I sold FSBO the buyers signed a contract on the spot. Name the parties in the contract. Names of the parties in the contract should be stated and designate them either as a buyer or seller. 2. A Texas seller's disclosure is a document that tells potential buyers about anything (good or bad) that could affect the purchase contract.