An agreement to sell real estate, or a purchase agreement, is a legally enforceable document that specifies the terms of a real estate transaction. This form of purchase and sale agreement includes guidance for both purchasers and sellers in New York commercial real estate acquisition and sale transactions.I want to show you how to do this simple contract there is a simple contract in transaction desk that you can use for a commercial deal. A unique application of customizable commercial real estate contract templates, including Purchase and Sale, Lease, and Listing agreements. A commercial real estate sale begins when you, as a seller, sign an agreement with a broker and retain a real estate attorney. A short form purchase and sale agreement for commercial real property located in New York State favoring the seller. The property includes a 33,000squarefoot industrial transshipment building on 2.6 acres. Colliers International; and c. Small enough to know you. Large enough to help you.