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Assessor's Office | Treasurer Tax Collector | New Query
  Property Assessment - Assessor's Office
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Lien Date: By law, January 1 is the annual date the Assessor uses to determine the valuation of your property for assessment purposes. January 1 is referred to as "LIEN DATE".
 
Roll Year: Lien date values are processed and "surrendered" as an "assessment roll". This happens each year on July 1. An assessment roll is also referred to as a "ROLL YEAR"
 
Fiscal Year: Assessment rolls are based on a fiscal year. Each fiscal year (assessment roll) begins on the July 1 following the January 1 lien date. A fiscal year runs from July 1 through the following June 30. The lien date values are used to create the assessment roll.
 
Examples
      January 1, 2011 would be the lien date for the 2011/2012 assessment
      roll surrendered on July 1, 2011.
      January 1, 2012 would be the lien date for the 2012/2013 assessment
      roll surrendered on July 1, 2012.
 
Tax Bills: The assessment roll is given to the County Auditor on July 1 as part of the surrender process. The County Auditor determines the different tax rates and special assessments that apply to your property and then gives the assessment roll and tax rate information to the County Tax Collector.

The County Tax Collector uses the surrendered roll and tax rate information to create your tax bill. This tax bill is normally mailed in October.

First installment is due on November 1 and is delinquent if not paid by December 10.
Second installment is due on February 1 and is delinquent if not paid by April 10.
 
NOTE: "Per Government Code Section 6254.21 we are unable to post the name of any owner on the internet at this time. Owner names may be obtained by visiting the Public Records Section of the Alameda County Assessor."
 
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