Annual Public Auction

Sale of Tax-defaulted Properties
The sale of "Tax-defaulted Property Subject to Power of Sale" is conducted by the Contra Costa County Treasurer - Tax Collector pursuant to the provisions of the Revenue and Taxation Code, and written authorization of the Board of Supervisors.

Owners have the right to redeem their property until 5:00 pm on the day prior to the sale.

Anyone who wishes to bid on property offered for sale must register via the internet at  Each registered bidder will receive an identification number, which will be required at the time of the online auction in order to participate.