Contra Costa County Tax Delinquent Property List
Research tax sale properties or find owners to contact directly. Contra Costa County has tax-delinquent properties tracked and scored for investors.
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Data sourced from public county records. Refreshed regularly.
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What brings you to Contra Costa County?
Why Download the Contra Costa County Owner List?
- Skip trace ready — Owner names and mailing addresses included
- Sorted by motivation — Properties ranked by delinquency amount and opportunity signals
- Refreshed regularly — Sourced from public county records
What's Included in the Contra Costa County List
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Top 100 highest-scored deals with grades and owner data from Contra Costa County
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Frequently Asked Questions
How often is the Contra Costa County list updated?
We pull fresh data from County Records monthly. Each download reflects the most recent delinquency data available from Contra Costa County.
What owner data is included?
Each record includes owner name, mailing address, property address, assessed value, years delinquent, tax owed, and property type. Pro subscribers also get skip trace phone numbers, deceased owner flags, and heir indicators.
Is the download really free?
Yes. Create a free account and get the top 100 highest-scored deals with grades and full owner contact info instantly. No credit card required. Upgrade to Pro for numeric scores, all rows, map, and CRM.
Download Contra Costa County List — Free
Download 100 highest-scored deals from Contra Costa County with grades, addresses, tax owed, and full owner contact info. No credit card required.
About Contra Costa County
- Region
- San Francisco Bay Area
- Population
- 1.2M
- Data Source
- County Records
- Data Status
- Available for Download
How Tax Delinquent Property Sales Work in California
California is a tax-deed state with no post-sale redemption. Properties become tax-defaulted after one year of unpaid taxes; after 5 years (or 3 years for non-residential property), the county tax collector schedules a public auction. Most California counties now run their tax-defaulted property sales online through Bid4Assets or similar platforms. The winning bidder receives a tax deed shortly after the sale, free of all prior tax liens but subject to certain other recorded interests like IRS liens, special assessments, and easements.
Bidding & Auctions
Most California tax-defaulted auctions are held online via Bid4Assets, Realauction, or county-specific platforms. Registration usually opens 30-60 days before the sale and requires a refundable deposit (commonly $1,000-5,000) plus a non-refundable processing fee. Bidding is ascending-bid with a soft close — late bids extend the auction by a few minutes to prevent sniping. The full purchase price is due within a short window after the sale (typically 24-72 hours), payable by wire or certified funds.
Redemption & Penalties
California has no post-sale redemption. The original owner must pay off all back taxes and penalties before the auction begins to keep the property. Once the auction starts, the owner has lost their right to the property. After the sale, the prior owner has 1 year to claim any "excess proceeds" — money left over after taxes, penalties, and costs are paid — but they cannot recover the property itself.
See California Revenue and Taxation Code, Part 6. Specific procedures vary by county — always verify with the local tax assessor/collector before bidding.
Resources for San Francisco Bay Area Investors
How to Buy Tax Delinquent Property in Contra Costa County
Step-by-step guide: tax sale process, redemption periods, deal types, and investor tips for San Francisco Bay Area.
Read the buying guideOther San Francisco Bay Area Counties
Frequently Asked Questions
How often is the Contra Costa County list updated?▾
We pull fresh data from county records monthly. Each download reflects the most recent delinquency data available from the Contra Costa County appraisal district.
What data fields are included?▾
Each record includes property address, owner name, mailing address, assessed value, years delinquent, tax owed, and property type.
Is the download really free?▾
Yes. Create a free account and get the top 100 highest-scored deals with grades and full owner contact info instantly. No credit card required. Upgrade to Pro for numeric scores, all rows, map, and CRM.
When are California tax-defaulted property sales held?▾
Each county schedules its own tax-defaulted property auction, typically once a year. Many large counties (Los Angeles, San Bernardino, Riverside) hold sales in spring or fall and publish the calendar 60+ days in advance.
Are California tax sales online?▾
Most California counties now conduct tax-defaulted property sales online, primarily through Bid4Assets. A few smaller counties still use in-person sealed bids, but the trend is fully online with deposit-based registration.
Does California have a redemption period after the sale?▾
No. The owner must redeem before the auction begins. After the auction, the buyer takes title — though the prior owner has 1 year to file a claim for excess proceeds (any sale price above the back taxes and costs).
What liens survive a California tax-defaulted property sale?▾
A tax-deed sale extinguishes most private liens (mortgages, judgments) but does NOT extinguish federal IRS tax liens (subject to a 120-day federal redemption window), most special assessments, or recorded easements. Always title-search before bidding.