San Mateo County, California tax sale

Last checked Tue, Oct 27, 2026

Information only, not investment or legal advice. Sale dates, terms and deadlines change; always confirm with the county before you register or bid.

Upcoming sales

No 2027 date posted yet; the county's tax sale FAQ says sales are typically held online in August.

Sale details

Sale type: deed
Format: Online
Schedule: Tax sales are typically held online in August, with information posted in advance.
Auction site: Grant Street Group (we link to it; we don't copy its listings)
How to bid: Register at sanmateo.mytaxsale.com (Grant Street, the auction platform). A deposit is required (amount not stated) and is applied to your purchase if you win; unsuccessful bidders receive a refund within about 10 business days. Legal title to tax-defaulted property can only be obtained by being the highest bidder at the tax sale. Tax collector phone and registration deadline not stated in the FAQ.

County contact

Office: San Mateo County Treasurer-Tax Collector
Website: https://smcgov.org/media/154158/download?inline=

Sources

https://smcgov.org/media/154158/download?inline= checked Oct 27, 2026

Source: San Mateo County, California official websites listed above. TaxAuctionLists is independent and is not affiliated with or endorsed by San Mateo County.

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