Data updated August 27, 2026 · San Mateo County, California
San Mateo County Delinquent Tax List (Tax-Delinquent & Tax-Defaulted Properties)
1,996 San Mateo County properties are behind on their property taxes — #34 of California's 58 counties and 0.5% of the statewide total. Nothing about tax delinquency is public-facing: no filing, no listing, no sign in the yard. But five years of it makes a property eligible for the county tax sale, and owners on this list disproportionately hold real equity with a cash-flow problem a sale would solve.
How San Mateo County's Numbers Are Moving
Change over the past week (since August 20), from Properant's daily snapshots of recorded county documents. The series grows every day.
The Full San Mateo County Distress Pipeline
The Profile
One click. The whole picture.
The Auction House
The only tax auction tracker in CA
With every property attached to a full due diligence profile — owner, liens, equity, comps, and the full recorded history — so you can vet each sale before you bid, not just track it.
Every sale date. Tax auctions and trustee sales statewide, on one calendar.
Every parcel. Auction properties linked to full records, equity, and comps.
Every contact. Trustee names, sale numbers, and phone numbers to verify.
What's on Every Property Record
The list carries each property's delinquent amount and first delinquent year, payment activity, the owner's record and mailing address, every recorded loan, and true equity — so "behind on taxes with equity and no mortgage" is a two-filter search in this county.
Tax-Delinquent Properties By City In San Mateo County
Daly City (204) · San Mateo (200) · Half Moon Bay (170) · Redwood City (165) · South San Francisco (138) · Pacifica (136) · Other (135) · Menlo Park (99) · San Bruno (94) · East Palo Alto (94) · San Carlos (71) · Foster City (63) · Burlingame (60) · Belmont (58) · Brisbane (58) · Hillsborough (36) · Millbrae (33) · La Honda (24) · Woodside (24) · Portola Valley (23) · El Granada (16) · Atherton (15) · Colma (14) · Montara (11) · Pescadero (10) · Moss Beach (8) · Emerald Hills (7) · Loma Mar (2) · San Gregorio (2)
Number in parentheses = properties behind on property taxes today. Each city page carries its own pre-foreclosure count alongside.
Nearby County Rankings
Frequently Asked Questions
How many tax-delinquent properties are there in San Mateo County?
Properant tracks 1,996 tax-delinquent properties in San Mateo County as of August 27, 2026 — ranked #34 of California's 58 counties — counted from recorded county documents with releases and cancellations removed.
Why are tax-delinquent owners in San Mateo County considered motivated sellers?
Because delinquency compounds: penalties accrue, and after five years the county can sell the property at its tax auction. Owners with equity but no cash flow — heirs, absentee owners, owners in transition — frequently prefer a clean sale over losing the property to the tax sale.
Can I download the San Mateo County list?
Yes. Inside Properant you can filter San Mateo County by city, equity, owner type, and every other signal, save the list, and export it — or upload your own list for matching and enrichment. The trial is free and requires no credit card.
More California Tax-Delinquent Property Lists
County and city lists people are reading right now, each one counted from recorded documents and refreshed daily.
- All California Tax-Delinquent Properties
- Oakland Tax-Delinquent Properties
- Roseville Tax-Delinquent Properties
- Los Angeles Tax-Delinquent Properties
- Cypress Tax-Delinquent Properties
- Scotts Valley Tax-Delinquent Properties
- Sacramento County Tax-Delinquent Properties
- Alameda County Tax-Delinquent Properties
Work San Mateo County Like You Live at the Recorder's Office
This page is one slice of it. Properant connects every parcel in California to its owner, open loans, liens and foreclosure stage — then scores and skip-traces the ones worth calling.
Want to search these 1,996 tax delinquent properties?
Explore the live San Mateo County tax-delinquent database in Properant.
See the Live List→3-Day Free Trial · No Credit Card Required