The Illinois Request to List Omitted Assessments Form is an official document used by taxpayers in the state of Illinois to request a list of assessments that were omitted from their tax records. This form is required when a taxpayer discovers that they have failed to include certain assessments in their previous tax filings. There are three types of Illinois Request to List Omitted Assessments Forms: the Property Tax Assessment List Omission Request Form, the Personal Property Tax Assessment List Omission Request Form, and the Real Estate Transfer Tax Assessment List Omission Request Form. The Property Tax Assessment List Omission Request Form is used to request a list of omitted assessments related to property taxes, such as assessments for real estate, manufactured homes, and business personal property. The Personal Property Tax Assessment List Omission Request Form is used to request a list of omitted assessments related to personal property taxes, such as assessments on motor vehicles and watercraft. The Real Estate Transfer Tax Assessment List Omission Request Form is used to request a list of omitted assessments related to real estate transfer taxes. Each of these forms must be completed and submitted to the appropriate county assessor's office for processing.