Buy Tax Liens in California: Due Diligence, Auction, and Tax Deed

If you want to buy tax liens in California, the first thing to know is that California doesn’t sell them. It’s a tax deed state. County tax collectors auction the tax-defaulted property itself, and the winning bidder walks away with a deed to the real estate, not a certificate against someone else’s debt. The sales run under Chapter 7 of the Revenue and Taxation Code, and most properties reach the auction block after five years of unpaid secured property taxes (three years for nonresidential commercial parcels).¹

The prices can be well below market. The risks can be bigger than the discount. What follows is what you actually need to know before registering for a sale.

Who Can Bid at a California Tax Sale

Anyone 18 or older can generally participate. You register with the county tax collector’s office before the sale and post a deposit if the county requires one. Deposit amounts and accepted forms vary, but certified funds are standard.

Two groups are shut out. The tax collector and their staff cannot bid at sales they conduct, and the current owner cannot buy their own property back below the minimum bid.²

If you win and then fail to pay, the county can void the sale, keep your deposit, and bar you from future tax sales for up to five years. Treat the deposit as a real commitment.²

One more timing point affects every bidder. The original owner’s right to redeem the property by paying all overdue taxes, penalties, and interest runs until the last business day before the auction begins. Properties get pulled from the list right up to the wire, so don’t invest heavy effort in any single parcel until the sale is confirmed.¹

Finding the Auction List

County tax collectors must publish the list of properties going to auction in a newspaper of general circulation at least three weeks before the sale, and must notify the State Controller’s Office between 45 and 120 days in advance. Most counties post the list on the tax collector’s website as well. Each listing shows the Assessor’s Parcel Number and the minimum bid.³

The minimum bid is set by law to cover delinquent taxes, penalties, and the county’s cost of running the sale. If a property failed to sell at a prior auction, the tax collector has discretion to lower the minimum next time. Those re-offered parcels can be where the deepest discounts show up, and often where the biggest problems hide.

Due Diligence Before You Bid

Every property sold at a California tax sale is sold as-is. The county makes no promises about condition, legal status, or usability. Your pre-auction research is the only protection you have.

Title Search

Pull a title report. You need to know what liens or encumbrances will survive the sale, because several categories do (see below). An IRS lien in particular can give the federal government a 120-day window to take the property away from you after the auction.

Zoning and Access

Check zoning and land-use rules with the county planning department. A bargain lot on paper may be landlocked, zoned agricultural only, or sitting under a building moratorium.

Site Visit

If you can walk the property, do it. Confirm the boundaries match what you expect. Look for occupancy, dumping, or structural damage. Anyone living there becomes your problem the day the deed records.

Environmental Records

Federal law under CERCLA does not shield tax sale buyers from liability for pre-existing contamination. Courts have treated the tax sale as enough of a transactional relationship to make the new owner potentially responsible for cleanup costs. A records review through the county environmental health department or the Department of Toxic Substances Control’s EnviroStor database can flag known contamination before you bid.

How the Auction and Payment Work

Counties run these as public auctions, in person or online, and some use sealed-bid formats. The highest bidder wins.²

Payment windows are tight. Most counties want the full balance within a few business days of the auction, in certified funds. On top of your winning bid, you owe the documentary transfer tax, which runs $1.10 per $1,000 of the purchase price in most California jurisdictions. Some charter cities charge additional transfer taxes, so confirm the total with the county recorder before bidding. The sale is not final until the tax collector receives full payment.

What the Tax Deed Clears, and What Stays Attached

The tax collector’s deed wipes out most pre-sale liens and encumbrances, but several categories survive. This is where first-time buyers most often get burned.⁴

Any property tax or special assessment installments that appear on the secured roll after the sale date.
Liens and assessment rights of any taxing agency that did not consent to the Chapter 7 sale.
Special assessments levied on the property that were not included in the redemption amount.
All easements, including prescriptive easements, separately held water rights, and recorded deed restrictions.
Unaccepted recorded offers to dedicate the property for public use, and recorded options for public agencies to purchase it.
Unpaid Improvement Bond Act of 1915 assessments not satisfied from the sale proceeds.
Federal IRS liens that federal law does not allow to be discharged by the sale.
Unpaid Mello-Roos Community Facilities District taxes not satisfied from sale proceeds.

The IRS lien point is worth repeating. Under Internal Revenue Code Section 7425, the IRS has 120 days after the sale to redeem a property that had a federal tax lien attached. If it does, the IRS reimburses you and then resells the property to recover both the reimbursement and the underlying tax debt. A title search before the auction will show you whether this risk exists.

After You Win: Quiet Title, Occupants, and Reassessment

You Will Likely Need a Quiet Title Action

Once you pay in full, the tax collector executes and records a tax collector’s deed in your name. The deed is a valid transfer, but most title insurance companies will not insure it on its own.² They want a quiet title action first: a court proceeding where a judge formally eliminates all prior claims and declares you the clear owner. Legal fees for one of these in California typically run from a few thousand dollars to well over $20,000, depending on complexity and whether anyone fights it. Without title insurance, selling or refinancing later becomes very hard. Budget for this before bidding.

The former owner also has one year after the deed is recorded to challenge the sale in court based on a procedural defect. The quiet title action resolves that cloud as well.

Evictions Are Your Problem

The county doesn’t remove occupants. If the former owner, tenants, or squatters are still on the property, you handle it, through the unlawful detainer process in California Superior Court.² That means serving proper notice, filing a complaint, and often attending a hearing. Timelines run from several weeks to several months depending on the court’s backlog and whether the occupant contests. Factor legal costs and delay into your bid if the property is occupied.

Property Taxes Get Reassessed

Buying at a tax sale is a change in ownership under California law. The county assessor will reassess the property at current fair market value, resetting whatever low Proposition 13 base-year value the prior owner had. If you win a property for $15,000 that’s worth $200,000, your future tax bills will be based on the $200,000. New buyers often miss this.

Future Tax Bills Start Immediately

Any installments and special assessments that come due on the secured roll after your purchase date are yours from day one.⁴ The deed clears the prior owner’s delinquency; it doesn’t give you a grace period. Confirm with the tax collector exactly which installments are current and when your first payment is due.

1
California Legislative Information. California Revenue and Taxation Code 3691 – Sale to Private Parties After Deed to State
2
California State Controller. Chapter 7 Tax Sales Frequently Asked Questions
3
State Controller’s Office. How to Buy Tax-Defaulted Property in California
4
California Legislative Information. California Revenue and Taxation Code 3712