When purchasing commercial real estate, you should include a due diligence period as a crucial element in your negotiations and in the contract. A commercial real estate purchase agreement allows a seller and a buyer to make a deal that transfers ownership of commercial property.Learn about the various elements of the forms and the usage of them. This Standard Document is a long form purchase and sale agreement for commercial property favoring the purchaser. Deals are starting to pick up, revealing just how far real estate prices have fallen. Currently, there are 2 Commercial Real Estate listings for sale near Clark, NJ. LoopNet consistently features the most up-to-date commercial property listings.