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. A Texas commercial real estate purchase and sale agreement documents terms for the transfer of ownership of property used for business purposes.In this video, Ron Rhode will be going over the A.CRE Office Purchase and Sales Agreement free real estate template. A commercial real estate purchase agreement is a legal contract between the buyer and seller of a commercial property. A commercial purchase agreement is a legal real estate contract that transfers commercial property ownership from a seller to a buyer. A Texas residential purchase agreement outlines the terms and conditions of an offer to purchase real estate.