A North Carolina commercial real estate purchase and sale agreement creates a legally binding contract for the purchase of commercial real estate. A commercial real estate purchase agreement is a legal document between a buyer seeking to purchase commercial property from a seller for an agreed-upon price.In this video, Ron Rhode will be going over the A.CRE Office Purchase and Sales Agreement free real estate template. Step 1 – Fill Out the Buyer and Seller Information. 1. Seller. Write down the seller's full name. A legal template for a commercial real estate Industrial Purchase and Sales Agreement. Contains 50 pages total. This Standard Document is a long form purchase and sale agreement for commercial property favoring the purchaser.