Who Should File: All owners of taxable personal property. If you no longer own the above noted business or personal property assessed in your.There are certain principles that will help you to classify property as real or personal. In brief, they are these: 1. Filing Requirement – This declaration must be filed with the Assessor of the town where the personal property is located. Anyone operating a business in Franklin County is required each year to provide a listing of personal property to the. Even fully depreciated equipment still in use must be listed. The Assessor will use the information provided to determine fair market value of all personal. The Franklin County Tax Assessor's Office is responsible for listing and assessing business and professional property for ad valorem taxation. How do I fill this out?