New York State developed nine property class codes to provide a statewide uniform classification system for assessment administration. For example, corporations are taxable on their networks of poles, underground conduits, wires and pipes and machinery used in the conduct of business.When you create an estate plan, you face many decisions. One of those decisions will be how you should divide and distribute your property. You will need to fill out Form SS-4, the application for employer identification number. What are examples of "Personal Property" that I must declare? Generic or typical equipment and furniture that most businesses would have:. Tax Map number on your Tax Bill. All tangible personal property is assessed in the city or town where it is located. Your family, though, will be much happier if you do fill it out, and keep it updated.