The property and improvements which the Seller is agreeing to sell and which the Purchaser is agreeing to purchase is known as. Some examples of documents you may need to sell your home are: Property survey: This is a legal document that shows the buyer the boundaries of your 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. How do I fill this out? The Texas Real Estate Commission (TREC) provides standardized contract forms for residential sales.