A North Carolina commercial real estate purchase and sale agreement creates a legally binding contract for the purchase of commercial real estate. INTRODUCTION: These guidelines are provided to assist Broker and attorneys who are completing the Offer to Purchase and.A business purchase agreement should detail the names of the buyer and seller at the start of the contract. North Carolina business law attorney Donald R. Fuller will draft and review purchase and sale agreements to protect client interests. INTRODUCTION: These guidelines are provided to assist Brokers and attorneys who are completing the Offer to Purchase and Contract—.