Business personal property must be listed for tax purposes on an annual basis. (5) Complete other requested business information.Make any address changes. Who Must File a Personal Property Declaration with the Assessor? Ownership of personal property is established as of January 1 each year. The 2024 business personal property listing form and instructions is for any individual(s) or business(es) owning or possessing personal property. The Assessor's Office maintains the official real property mailing address records for Clark County. The form can be filled out and submitted in PDF format. Your local county tag office is the best resource to provide help for most registration, license plate and titling questions.