A Florida commercial real estate purchase and sale agreement formalizes the details of a commercial property transaction between a seller and a buyer. For forms of commercial purchase and sale agreement to use in Florida, see Commercial Purchase and Sale Agreement (Long Form).This file contains essential details and instructions for completing a commercial contract in Florida. Get a comprehensive understanding of Florida real estate purchase and sale agreements with our indepth overview and free template. Step 2 – Describe the Property. 3. Property. Fill out the street (physical) address of the property the buyer is purchasing. This Standard Document is a long form agreement for the purchase and sale of commercial real property favoring the seller for use in Florida.