San Bernardino County auctions off tax-defaulted property every year, and the countdown to that auction starts the moment a parcel’s property taxes go five years unpaid.

Covering roughly 20,000 square miles and over two million residents, San Bernardino is the largest county by area in the contiguous United States, and its tax collector’s office handles delinquent-property cases from the Inland Empire’s dense suburbs all the way out to the sparsely populated high desert.

If you own property anywhere in the county and you’re behind on taxes, here is the actual timeline, how the county’s online auction works, and the excess-proceeds claim that a surprising number of former owners never bother to file even though the money is sitting there waiting for them.

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When a Property Becomes Eligible for the Power to Sell

California Revenue and Taxation Code Section 3691 sets the statewide rule every county, including San Bernardino, has to follow: a property becomes “tax-defaulted” the moment its annual property tax goes unpaid past the delinquency date, and it becomes subject to the tax collector’s power to sell once it has been tax-defaulted for five years or more.

Nonresidential commercial property has a shorter three-year clock under the same statute.

There’s also a narrower path that can move faster — under Section 3691(b), three years after default, a city, county, city and county, or nonprofit can request that a specific property be offered at the next scheduled sale, or a party holding a recorded nuisance abatement lien can request the same.

For an ordinary residential owner falling behind on taxes, the number that actually matters is five years from the date the taxes first went into default, not five years from any one year’s missed payment.

That five-year window is longer than most people assume, and it means an owner who misses one year’s property tax bill is not in any kind of auction danger yet.

The real risk builds only if the taxes stay unpaid year after year without a redemption plan, which is why San Bernardino County, like every California county, sends multiple default and pre-sale notices well before a parcel ever reaches an actual auction listing.

How San Bernardino County Actually Runs the Auction

San Bernardino County’s Auditor-Controller/Treasurer/Tax Collector holds an online public auction, typically once a year, through the county’s own tax sale portal at sbcounty.mytaxsale.com.

Bidders register in advance and must have their deposit on file with the county by a stated registration deadline before the sale opens — in recent years that deposit deadline has fallen in early May, though the exact date moves from year to year and should be confirmed against the current year’s published notice rather than assumed.

Due-diligence materials, including parcel lists and minimum bid information, are published through the county’s tax collector resources before bidding opens.

The county has publicized auctions covering anywhere from several hundred to well over a thousand parcels in a single sale, reflecting how many properties countywide have crossed the five-year default threshold in a given year.

Minimum opening bids are generally set to cover the delinquent taxes, penalties, interest, and costs of the sale — in some past San Bernardino County auctions, openings have started as low as a few hundred dollars for small or landlocked parcels, though a typical residential property’s minimum bid will reflect years of accumulated taxes and penalties and can run far higher.

The specific minimum for any parcel is published with that year’s parcel list and should never be assumed from a prior year’s figures.

What a Winning Bid Actually Buys

A winning bidder at a tax sale receives a tax deed to the property, not a guarantee of clear, insurable title the way a conventional sale would.

Tax deeds can carry title defects, and many title insurers won’t issue a standard policy on a freshly tax-deeded property without additional work — typically a quiet title action — to clear the record.

This is a meaningfully different transaction from buying a listed home through escrow, and it’s one reason tax-sale buyers tend to be investors experienced with the process rather than typical owner-occupant buyers.

What Survives the Tax Deed and What Doesn’t

One detail that surprises almost everyone touched by a tax sale, on either side, is how thoroughly the tax deed wipes out prior liens.

Revenue and Taxation Code Section 3712 says the tax deed conveys the property free of most liens and encumbrances that existed before the sale — including, typically, a mortgage lien, because the lender’s security interest is extinguished along with the former owner’s title.

That’s a major reason mortgage lenders pay close attention to delinquent property taxes on loans they service: if the lender doesn’t step in and pay the back taxes itself before the five-year clock runs out, it risks losing its entire security interest at the tax sale.

A small number of specific items survive the sale regardless: taxes and assessments that become payable after the sale date, liens held by a taxing agency that didn’t consent to the sale, recorded easements and restrictions, unpaid Mello-Roos special taxes and 1915 Act bond assessments tied to certain financing mechanisms, and — notably — federal IRS liens that federal law doesn’t allow the sale to discharge.

If a property has a federal tax lien recorded against it, that lien can survive the county’s tax sale even though the mortgage doesn’t, which is one more reason a tax-sale buyer’s title often needs a quiet title action before it’s considered clean enough to insure conventionally.

The Excess-Proceeds Claim Most Former Owners Never File

Here’s the part that surprises most former owners: if a property sells at auction for more than the taxes, penalties, interest, and costs owed, the surplus doesn’t go to the county’s general fund.

Under Revenue and Taxation Code Section 4674, that excess is held in the delinquent tax sale trust fund after the county deducts its proper statutory distributions, and it stays available to be claimed.

California counties, including San Bernardino, have sat on real money former owners never came back for simply because they didn’t know the process existed or assumed the county kept everything once a property was sold out from under them.

Our article on foreclosure surplus funds in California covers the parallel process after a private trustee’s sale foreclosure; this county tax-sale process is a separate track with its own statute, but the underlying idea is the same — money left on the table that someone has to actively claim.

Who Can Claim It, and in What Order

Revenue and Taxation Code Section 4675 allows “any party of interest in the property” to file a claim, with distribution following a set priority: parties holding a lien on the property recorded before the tax deed was recorded are paid first, and anyone who held record title to all or part of the property before the deed was recorded is paid second, each in proportion to their interest alongside others of equal priority.

If the person who held title has since died, their heirs can support a claim with an affidavit under the relevant Probate Code provisions rather than needing a full probate proceeding just to recover these funds.

In practice, this most often means a former owner who lost the property to the tax sale, or a mortgage lender or other lienholder whose lien was wiped out by the sale but who has a priority claim to the proceeds ahead of the former owner. If more than one party has a valid claim, the county distributes according to that statutory priority rather than first-come, first-served.

The One-Year Deadline

This is the detail that costs people the most money: under Section 4675, a claim for excess proceeds must be postmarked no later than one year after the recordation of the tax collector’s deed to the purchaser.

Miss that window and the claim is time-barred — the statute doesn’t provide a path to revive it later.

After the one-year period expires with no timely claim, the county auditor can transfer the unclaimed excess to the county general fund, after first deducting the county’s costs of maintaining the relevant files and administering claims.

If you lost a property to a San Bernardino County tax sale in roughly the past year, confirming whether excess proceeds exist and filing before that anniversary date is worth doing before anything else.

Stopping the Clock Before the Auction

Unlike a trustee’s sale foreclosure, which moves on a matter of months, the tax-default process gives an owner years to act.

At any point before the parcel is actually sold at auction, the owner can redeem the property by paying the full delinquent amount — back taxes, penalties, interest, and costs — plus, in many cases, the ability to enter a five-year payment plan under California’s installment redemption provisions, which can restart the clock and stop the county from proceeding to sale as long as payments stay current.

Once the parcel is actually sold at auction, the right to redeem by payment ends; only the excess-proceeds claim described above remains available to a former owner after that point.

A Worked Example

Say a San Bernardino County homeowner stopped paying property taxes in year one, owing roughly $4,200 that year.

With penalties, interest, and annual taxes continuing to accrue, by the time the parcel reaches its five-year default anniversary the total owed to redeem might run to $9,000 or more, depending on the property’s assessed value and the specific penalty schedule that applied each year.

If the owner never redeems and the property goes to auction, and an investor bids $185,000 for a parcel otherwise worth considerably more on the open market, the county’s distribution works through the delinquent tax amount, penalties, interest, and costs of the sale first — call that roughly $10,000 all in — leaving close to $175,000 in excess proceeds.

That $175,000 sits in the county’s trust fund waiting for a party of interest, almost always the former owner in this kind of scenario, to file a claim within one year of the tax deed’s recordation.

Former owners who never learn this process exists can lose a six-figure sum they were legally entitled to recover, simply by doing nothing.

Frequently Confused Questions

Does the county notify the owner before the sale? Yes. State law requires multiple rounds of written notice as a parcel approaches its default anniversary and again before it’s actually included in a scheduled sale, sent to the owner’s address of record.

An owner who moved without updating that address with the assessor’s office is the most common reason a notice never reaches the person who needed to see it.

Can a family member or heir redeem the property instead of the owner? Generally yes, if they have a legitimate interest in the property and the funds to pay the redemption amount before the sale. This is worth raising with the tax collector’s office directly and promptly, since redemption rights end once the parcel is actually sold.

Is the tax sale the same thing as a probate sale or a foreclosure sale? No. All three are entirely different legal processes with different triggers, timelines, and courts (or no court at all, in the tax sale’s case), even though all three can result in a property changing hands involuntarily.

How This Differs From a Private Mortgage Foreclosure

A tax sale and a mortgage foreclosure are entirely separate processes that can affect the same property independently.

Falling behind on your mortgage triggers a notice of default and a much faster trustee’s sale timeline, typically well under a year — we’ve covered how California’s nonjudicial foreclosure process actually moves in more detail. Falling behind on property taxes triggers this much slower, five-year county-run track instead.

It’s entirely possible for a property to face both at once if an owner stops paying both the mortgage and the property taxes, and in that situation the mortgage foreclosure will almost always resolve first simply because its timeline is so much shorter.

When a Cash Sale Beats Waiting Out the Clock

If you’re years behind on property taxes in San Bernardino County and the five-year window is closing in, waiting for the auction is rarely the best outcome even though you technically have time left.

Selling before the sale lets you capture your equity directly rather than hoping for excess proceeds after the fact, and it avoids the title complications a tax deed buyer has to untangle.

A traditional listing can work if the property is in sellable condition and you have a few months of runway, but a cash sale makes more sense when the back taxes are large enough that a conventional buyer’s lender won’t finance around the lien, when the property needs repairs you can’t fund out of pocket, when you’re an out-of-area owner who inherited a San Bernardino County property and don’t want to manage a listing from a distance, or when the five-year deadline is close enough that you need certainty rather than a market-timed sale.

If your situation genuinely has no urgency and the property shows well, getting a second opinion from an agent on net proceeds is still worth doing before committing to any one path.

What to Confirm Right Away

Confirm exactly how many years your property has been tax-defaulted with the County Auditor-Controller/Treasurer/Tax Collector’s office, not an estimate
Ask whether a five-year installment redemption plan is still available to stop the clock while you decide on next steps
If a property you previously owned was already sold at a San Bernardino County tax auction within the last year, check immediately whether excess proceeds exist and file a claim before the one-year deadline
Compare your net proceeds from a timely sale against the risk of losing everything but a partial, delayed excess-proceeds claim

Back property taxes are one of the more fixable problems a homeowner faces, precisely because the timeline is so much longer than people expect — but that window closes eventually, and the excess-proceeds claim window closes even faster once a sale has already happened, so don’t wait until the last possible month to start exploring your options.

If you want a no-obligation cash offer while you still have full control of the timeline, Cash Home Buyers CA can walk through your numbers with you.

You can also see how we buy houses throughout San Bernardino County, or find Cash Home Buyers CA’s Google listing for more about who we are.

San Bernardino County’s Tax-Defaulted Auction: The Five-Year Countdown and the Excess-Proceeds Claim