What if I purchase a piece of property and then sell it again after a few months?

If you purchase and then sell property within a short period of time, the supplemental tax bill you receive should cover only those months during which you owned the property, and the new owner should receive a separate supplemental tax bill. 

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.

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1. What is a supplemental tax bill?
2. How is a Supplemental assessment done?
3. Do I have the same right to appeal the Assessor's supplemental assessed value as I do the annual assessed value?
4. If I receive a supplemental tax bill, will I also receive an annual tax bill in the fall of each year?
5. If I pay my property taxes through an impound account (i.e., with my mortgage payment), will my lender get my supplemental tax bill?
6. What does the supplemental tax bill tell me?
7. What if I purchase a piece of property and then sell it again after a few months?
8. When I purchase property or complete construction at some point during the Fiscal Year, will I be taxed on the supplemental value for the entire Fiscal Year?
9. Is it possible to get more than one supplemental tax bill?
10. When do supplemental tax bills have to be paid?
11. If payment of the supplemental tax bill is not made before the delinquency date because of a misunderstanding between my lender and myself, may I have the penalties excused?
12. What happens if I fail to pay my supplemental tax bill?
13. Can delinquent supplemental taxes be paid on an installment plan?
14. Am I entitled to a homeowner's exemption on my supplemental tax bill?
15. Are other exemptions and assistance programs available that will help defray the amount of supplemental taxes due?