The property and improvements which the Seller is agreeing to sell and which the Purchaser is agreeing to purchase is known as. Looking to sell your house in New York?Fill out the form below or call us at and get a FREE cash offer! Commonly Used Forms. Business Certificate Order Form, Fill out and complete the PDF to order a copy of a Business Certificate. A For Sale By Owner contract New York must include: 1. The Purchase Price, 2. This form is valid for sales or transfers (date of conveyance) after December 31, 2021, but before January 1, 2023. Some examples of documents you may need to sell your home are: Property survey: This is a legal document that shows the buyer the boundaries of your property.