Let's dive into some of the FSBO paperwork that will be necessary when legally selling a house without an agent's help. It's important for FSBO sellers in Texas to fill out the seller's disclosure notice accurately and thoroughly.Describe the real estate. Provide the common address and the full legal description of the property. 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. Texas requires those selling FSBO to fill out and file many documents and forms. Several of these documents are legally binding agreements. For your convenience we have provided a list of the most frequently used forms for residential real estate transactions.