A unique application of customizable commercial real estate contract templates, including Purchase and Sale, Lease, and Listing agreements. 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. This form is used for the sale of vacant land. This form is actually three forms in one; offer, purchase and sale agreement and escrow instructions. A commercial purchase agreement is a legal real estate contract that transfers commercial property ownership from a seller to a buyer.