Yes, the same APN number could represent different properties. There are approximately 3,140 counties or county-equivalent administrative units in the United States; most have their own assessor’s office and use some form of APN number. Because there is no standard numbering system that covers all counties, it is possible that two or more properties in the country share the same APN number at the same time. When this is the case, a search by APN number will yield multiple properties.
On the History tab of the Property Details page, in the prior sales transactions section, there is a Multi-APN Flag. The field provides visibility to users when multiple APNs were associated with prior sales transactions.