The Office of the City Register records and maintains New York City real property and certain personal property transfer records, such as mortgage documents. Seller shall sell and convey and Purchaser shall purchase the property, together with all buildings and improvements thereon (collectively the.You can search for, get copies of, or update property ownership records, such as deeds and mortgages. A deed is often referred to as a title. Learn the steps in a real estate transaction and what happens with sale of property. Find a real estate lawyer. Sales of tangible personal property are subject to New York sales tax unless they are specifically exempt. Sales of services are generally exempt. JOSHUA STEINpractices commercial real estate law in New York City. (The word "Purchaser" refers to each and all of those who signed below as Purchaser.) 2.