All owners of business personal property must complete and return a personal property declaration to the Assessor no later than November 1st annually. The Franklin County Tax Assessor's Office is responsible for listing and assessing business and professional property for ad valorem taxation.Who Should File: All owners of taxable personal property. If you no longer own the above noted business or personal property assessed in your. Do you currently operate a business in Franklin County? Yes. No. If "No", please sign and date at the bottom, and return this form to the Assessor's Office. Where is the return filed? You'll need to provide details about your business property, such as descriptions and costs. Follow the steps below to complete and submit the form accurately. Form on pages 1 and 9.