Who Must File a Personal Property Declaration with the Assessor? The BPP Portal is closed until 2025.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. Program Application Forms. Mark an X in the appropriate box: Single-use certificate. Blanket certificate. The Clark County Assessor's Office locates, identifies, and appraises all taxable property accurately, uniformly, and equitably in accordance with Indiana law. To access all Department of Local Government Finance forms please visit the State Forms Online Catalog available HERE. Virginia allows localities to tax the personal property of residents.