If you own any business related personal property in Clark County, you are required to file a personal property listing. Landowners or lawful occupants who want to control access to their property and prevent timber theft may post signs warning people to keep out.The license fee is renewable annually. Learn how to file a Claim of Exemption to protect your money or property that is "exempt" (protected) and can't be taken to from you to pay a judgment. (B) Uses permitted: fill operations on or adjacent to private ponds. Items at a garage sale on private property. Disclosures of Personal Information for a Business Purpose. The Clark County Assessor values all property subject to taxation. A separate city business license is required for each permanent business location in the city.