An APA spells out the conditions and terms under which a seller will transfer all of the assets that belong to the business to a buyer. This guide provides basic information to consider before you enter into a commercial lease in New York City.Topics include location selection,. A sales agreement for buying a business is necessary for keeping both the parties on the same page and avoiding any legal trouble. Examination of commercial leases, purchase agreements, and financing options for commercial properties. 1.2 Agreement to Purchase. If Buyer extends, Seller may want to: (1) have Buyer bear the risk of changes in circumstances (e.g. CONTRACT OF SALE – OFFICE, COMMERCIAL AND MULTI-FAMILY RESIDENTIAL. PREMISES. An asset purchase agreement is a legal document used when buying or selling a small business. Read on to understand the basics.