We offer the personalized and strategic counsel you need to effectively complete these transactions in Queens, Nassau and throughout New York State. The APA must include the "conditions to closing.An asset purchase agreement is a legal document used when buying or selling a small business. Read on to understand the basics. A sales agreement for buying a business ensures proper implementation and execution of the contract. How do I fill this out? Browse 302 businesses for sale in Nassau County, NY on BizBuySell. Asset Purchase Agreements (APA).