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Applications for appeal must be filed within sixty days of the mailing date shown on the assessment notice. If you choose to appeal your assessment, you should still pay your tax installments in full by the appropriate deadlines; otherwise, you may incur penalties while the case is in appeals. If your appeal is granted, a refund will be issued to you.
Further information about the appeals process can be obtained by calling (925) 335-1901 or writing to:
Clerk of the Assessment Appeals Board651 Pine Street, Room 106Martinez, CA 94553
Because of the large number of parcels and frequency of property changing hands in Contra Costa County, there are often delays in placing new assessments on the roll. Be sure to check the dates used to prorate the bill to ensure that the period covered is the period during which you actually owned the property. If you receive an incorrect tax bill, contact the Auditor – Controller’s Office at (925) 646-2236.
NOTE: If you purchased the property or completed new construction between January 1 and May 31, you will receive an additional supplemental bill for the entire following fiscal year.
If the bill is mailed between November 1 and June 30, the delinquency dates -- which are printed on the bill -- are determined as follows: The first installment is delinquent at 5 pm on the last day of the month following the month the bill was mailed; the second installment is delinquent at 5 pm on the last day of the fourth month after the first installment delinquency date.
Penalties of 10% are added to any installment that is not paid on time, and an additional $15 charge is added to a late second installment.
Example:On May 29, 2003 you purchase a home on which no homeowner's exemption had been allowed. Because you are reassessed on the first day of the month following an ownership change, in the current Fiscal Year you will pay supplemental taxes for the one remaining month. Your 2002-03 supplemental assessment amounts to $20,000. If you file for and qualify for a homeowner's exemption, the entire $7,000 exemption amount would be deducted from the supplemental assessment BEFORE the taxes are calculated.