Form agreement for the sale of goods under Chapter 2 of the Texas Uniform Commercial Code (UCC), drafted in favor of the buyer. This is an example of a regional sales contract that is used in the purchase and sale of real estate property.A commercial purchase agreement is a legal real estate contract that transfers commercial property ownership from a seller to a buyer. You will find that each real estate contract below is legal and can be customized to include photos and any other details you would like to add. Amounts specified in 5A(2)(a) will be applied towards any fees a buyer has agreed to pay Broker as specified in a separate written representation agreement. B. Master Lease Agreement for Commercial Real Estate. Renew your Texas Real Estate Sales Agent or Broker license every two years with 18-hours of TREC mandatory Continuing Education (CE).