Business personal property deals with the physical assets used in the operation of the business. The Business Personal Property Unit assists in the assessment of this type of property.Unclaimed Property is a financial asset owed to an individual or business. Do I have to register with Maricopa County Assessor's Office? Yes, you must properly register your property with the county. Residential Rental is the rental of real property for a period of 30 or more consecutive days for residential purposes only and not commercial. Filing a trade name registers a business name for public record. The assessor shall notify the owner of the property of any change in the valuation or legal classification on or before September 30 of the valuation year. Closed-toe shoes must be worn at all times on the Basketball Court and on the Fitness Floor. While working out, be courteous to other members.