The Texas Association of Realtors (TAR) provides certain forms to its members. If you are a member, TAR may have a form that fits your needs.We'll make our choices, check the boxes and fill in the blanks. Our State-By-State Guide To Real Estate Forms will prepare you for exactly what you need, whether you live in Alabama or Wyoming. Ask your buyer to sign a buyer's representation agreement. For your convenience we have provided a list of the most frequently used forms for residential real estate transactions. The Texas Real Estate Commission (TREC) provides standardized contract forms for residential sales. Seller Financing Addendum.