San Diego County holds one primary online tax auction per year, typically in March, through sdttc.mytaxsale.com (operated by Grant Street Group). The 2026 auction offered 686 properties — single-family homes, commercial buildings, vacant lots, and timeshares — with the potential to recover over $18 million in delinquent taxes.
This guide covers the complete process: the registration window (opens February 16), the $1,000 refundable deposit plus $35 processing fee via ACH, the redemption deadline (March 12, 2026), the 5-day auction window (March 13–18, 2026), and the 5-business-day payment requirement.
You'll learn how to research parcels through the SD County Assessor, evaluate timeshares (which make up a significant portion of inventory), check fire hazard severity zones for eastern county parcels, and navigate the quiet title process for SD Superior Court. County-specific contacts, deadlines, and California legal framework included.
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Table of Contents
What Are Tax Deed Sales?
San Diego County Market Overview
Key Dates & Registration
How to Research Properties Before Bidding
The Bidding Process: How It Works
After the Auction: What Happens Next
Redemption Period & Right of Redemption
Clearing Title After Purchase
Key Contacts & Official Resources
Chapter 1 — Introduction
San Diego County holds one primary online tax auction per year, typically in March, through sdttc.mytaxsale.com (operated by Grant Street Group). The 2026 auction offered 686 properties — single-family homes, commercial buildings, vacant lots, and timeshares — with the potential to recover over $18 million in delinquent taxes.
This guide covers the complete process: the registration window (opens February 16), the $1,000 refundable deposit plus $35 processing fee via ACH, the redemption deadline (March 12, 2026), the 5-day auction window (March 13–18, 2026), and the 5-business-day payment requirement.
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