If you are obtaining the forms for possible use in a real estate transaction, you should contact a real estate license holder or an attorney for assistance. The Texas Real Estate Commission (TREC) provides standardized contract forms for residential sales.Learn all about the essential paperwork needed for a successful sale on our blog. Name the parties in the contract. A For Sale By Owner contract Texas must include: 1. The Purchase Price, 2. Please fill out my quick real estate sellers request form and tell me about your property.