San Diego County’s next auction of tax delinquent properties runs March 13 through March 18, 2026, with 686 parcels on offer and a 5 p.m. Pacific registration deadline on March 5.1San Diego County Treasurer-Tax Collector. County Auction Offers 686 Properties and Could Bring in Over $18+ Million in Tax Revenue Bidding happens online through sdttc.mytaxsale.com, starting bids equal the back taxes, penalties, and administrative costs owed, and winning a parcel is a binding commitment to pay the full price within five business days.2SDTTC.MyTaxSale.com. General Auction Rules The county sells on a buyer-beware basis, so the work you do before you bid matters more than what happens during the auction itself.
What’s on the Block in 2026
The 686 parcels break down into 70 improved properties (land with structures), 66 unimproved lots, and 550 timeshares.1San Diego County Treasurer-Tax Collector. County Auction Offers 686 Properties and Could Bring in Over $18+ Million in Tax Revenue Timeshares dominate the list by count, but the improved properties draw the most competition, and final prices on those parcels generally run well above the starting bid. If every parcel sold at minimum, the county would collect roughly $18.2 million.
The official list appears on the Treasurer-Tax Collector’s auction site several weeks before the sale, with the starting bid on each parcel.3San Diego County Treasurer-Tax Collector. SDTTC.MyTaxSale.com – Frequently Asked Questions Parcels get pulled from the list when the owner pays off the tax bill or when a bankruptcy filing blocks the sale, so check for updates in the final days.
Registering and Posting Your Deposit
To bid, you need to be at least 18 and complete registration on sdttc.mytaxsale.com before the deadline.4San Diego County Treasurer-Tax Collector. Bidder Registration For the 2026 sale, all deposits must land by 5 p.m. Pacific on March 5, 2026. Late registration is not accepted, and the process cannot be done by mail.
Each bidder posts a $1,000 refundable deposit plus a $35 non-refundable processing fee by electronic debit.1San Diego County Treasurer-Tax Collector. County Auction Offers 686 Properties and Could Bring in Over $18+ Million in Tax Revenue A few higher-value parcels may carry a larger deposit requirement. If you leave the auction empty-handed, the $1,000 comes back roughly 10 days after the sale closes; the $35 is gone either way.3San Diego County Treasurer-Tax Collector. SDTTC.MyTaxSale.com – Frequently Asked Questions
How the Online Bidding Works
The auction window spans six days, so there’s time to track parcels and adjust strategy. You can enter a maximum bid and let the platform raise your active bid in small increments to keep you on top until it hits your cap. Every bid you place is a legal commitment to buy at that price if you win.
An auto-extend feature resets the countdown clock on a parcel if someone bids near the end, which blocks last-second sniping. Treat the published close time as approximate for any parcel that stays competitive. Watch your parcels across the window rather than planning to show up for the final minutes.
Paying for a Win — Fast
Winning bidders have five business days from the close of the auction to pay the balance of the purchase price plus documentary transfer fees.2SDTTC.MyTaxSale.com. General Auction Rules Miss that window and you forfeit the entire deposit. The county can also bar you from bidding in future sales.
Once your payment clears, the Treasurer-Tax Collector issues a Tax Deed to Purchaser and records it with the San Diego County Recorder, which establishes your legal interest in the parcel. Recording fees typically run a few hundred dollars on top of the purchase price.
Research Every Parcel Before You Bid
Each property is identified by its Assessor’s Parcel Number, a ten-digit code with dashes (for example, 123-456-78-90).5San Diego County Assessor/Recorder/County Clerk. Secured Assessment Roll Search The APN is the key to pulling assessed values, building characteristics, and maps from the County Assessor. The street address helps you visit the site; the APN ties the records together.
A tax deed sale wipes out most junior liens, including mortgages and judgment liens recorded after the original tax default. Some obligations survive, though. Certain special assessments and utility liens may persist depending on their recording date and legal priority, and federal tax liens carry their own redemption risk (covered below). A preliminary title search is the only reliable way to find out what you’d inherit; professional searches typically run $50 to $200 per parcel. Skipping that step is the most common and most expensive mistake new tax-sale buyers make. The county warrants nothing about title, land condition, or code compliance.
The IRS 120-Day Redemption Right
If a federal tax lien was recorded against the parcel before the sale, the IRS has 120 days from the sale date to redeem the property by reimbursing you for your purchase price.6Office of the Law Revision Counsel. 26 USC 7425 – Discharge of Liens If local law provides a longer redemption period, the IRS gets the longer window.7eCFR. 26 CFR 301.7425-4 – Discharge of Liens; Redemption by United States You’d get your money back, but you’d lose the property.
The IRS rarely exercises this right. Rarely is not never. A parcel with a recorded federal lien sits in limbo for four months after you buy it, and during that stretch you can’t reliably resell, finance, or sink serious renovation money into it. The title search is where you find this lien. If one shows up, price the 120-day uncertainty into your bid or walk away.
The Owner Can Redeem Up to the Day Before
Any parcel on the list can disappear at the last minute. Owners can stop the sale by paying all delinquent taxes, penalties, and fees, and that right stays open until the close of business on the last business day before the auction starts.8California Public Law. California Revenue and Taxation Code Section 3707 For the 2026 sale, that cutoff is 5 p.m. on March 12.1San Diego County Treasurer-Tax Collector. County Auction Offers 686 Properties and Could Bring in Over $18+ Million in Tax Revenue
Expect to lose a few parcels you’ve researched carefully. That’s a feature of the system, not a flaw. Build a shortlist, not a single target.
One note on the back-end of the sale: if a parcel sells for more than the taxes and costs owed, the leftover money (excess proceeds) can be claimed by the former owner or recorded lienholders for one year after the deed is recorded.9California Legislative Information. California Code Revenue and Taxation Code 4675 This does not affect buyers. Your purchase price is final, and the former owner has no right to reclaim the property once the deed is recorded.
After You Own It
Clearing Title and Getting Title Insurance
A tax deed gives you legal ownership, but most title insurers will not write a policy on a tax-deeded property without more work. The standard path in California is a quiet title action, a lawsuit that formally eliminates competing claims and establishes your ownership as undisputed. Quiet title actions typically run upward of $4,500 in attorney fees and take six to twelve months. Factor that cost into your bidding math from the start, because without title insurance you’ll struggle to sell the property or get a mortgage lender involved later. Some specialized title companies offer alternative certification services that may reduce cost and time, but the court action remains the most widely accepted route.
Reassessment and a Supplemental Tax Bill
Property taxes become your responsibility once the deed records. A change in ownership triggers reassessment under California’s Proposition 13 framework, so the county will revalue the property based on your auction purchase price and send a supplemental bill for the difference between the old assessed value and the new one. If you paid well above the former assessed value, that supplemental bill can be substantial.
Occupied Properties Require Formal Eviction
A deed does not hand you possession. If the former owner or a tenant is still living in the property, you cannot change the locks. California law requires formal notice and, if the occupant doesn’t leave, an unlawful detainer action in court. That adds time and legal cost that auction buyers routinely underestimate. Drive by any improved parcel on your shortlist and look for signs of occupancy before you bid. A parcel with someone living in it is a different purchase than a vacant lot.
Expect Deferred Maintenance and Surprises
The county provides no warranty on building condition, code compliance, or environmental status. Parcels that have been tax-defaulted long enough to reach auction are often neglected, and you generally can’t inspect the interior beforehand because you have no legal right of access. Deferred maintenance, code violations, unpermitted construction, and contamination are all possibilities on improved parcels. Budget for surprises.