Data updated October 12, 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. This is the San Mateo County delinquent property tax list as it stands today — the county's delinquent tax roll with the owner, loan and equity records attached — not the once-a-year tax-defaulted notice.
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Sample Records
10 Real Tax-Delinquent Properties In San Mateo County
Ten records pulled from the database, picked from the highest AI distress scores in the county. Click a pin or a row to light it up on the map, double-click to open the same property profile subscribers see. Owner names, mailing addresses, parcel numbers, and contacts are shown in the free trial (no credit card required).
Showing: List. Switch to AI Distress Score to see how our AI ranks these ten by urgency.
| Property | Type | Value | Equity | Taxes Owed | Lien Position | Score |
|---|---|---|---|---|---|---|
16 MOON GATE CT PACIFICA · 3 bd / 2 ba · 1,320 sf | Single Family | $1.39M | $1.39M100% | $101K Since 2018 | Senior | 71 |
2675 SHARON PARK DR APT 229 MENLO PARK · 3 bd / 2 ba · 1,411 sf | Condo | $1.20M | $1.20M100% | $6K Since 2024 | Senior | 68 |
3711 S BAYSHORE BLVD APT 24 SAN MATEO · 1 bd / 1 ba · 675 sf | Condo | $531K | $191K36% | $4K Since 2024 | Senior | 67 |
411 LEWIS AVE SOUTH SAN FRANCISCO · 4 bd / 2 ba · 2,475 sf | Duplex | $1.71M | $464K27% | $11K Since 2024 | Senior | 60 |
5990 RONALD CT HALF MOON BAY · 3 bd / 1.5 ba · 1,470 sf | Single Family | $846K | $846K100% | $33K Since 2020 | Senior | 58 |
61305 CHELSEA WAY REDWOOD CITY · 2 bd / 2.5 ba · 1,360 sf | Condo | $1.00M | $214K21% | $6K Since 2024 | Senior | 58 |
7808 LA MONTAGNE PL SOUTH SAN FRANCISCO · 3 bd / 2.5 ba · 2,510 sf | Single Family | $1.69M | $493K29% | $59K Since 2022 | Senior | 57 |
81240 CRESTWOOD DR SOUTH SAN FRANCISCO · 3 bd / 2 ba · 1,050 sf | Single Family | $1.32M | $1.32M100% | $4K Since 2024 | Senior | 56 |
9615 BEAN HOLLOW RD PESCADERO · 3245 bd / 9.5 ba · 2,963 sf | Single Family | $5.72M | $5.72M100% | $216K Since 2021 | Senior | 53 |
10707 9TH AVE SAN MATEO · 3 bd / 2 ba · 1,830 sf | Single Family | $1.77M | $1.36M77% | $21K Since 2023 | Senior | 52 |
Want all 1,996 tax-delinquent properties in San Mateo County?
These ten are the sample. Owner names, mailing addresses, parcel numbers, lenders, trustees, one-click skip tracing, and direct mail are shown in the free trial (no credit card required).
The Profile
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The Tax Auction House
The only CA-dedicated tax auction tracker & due diligence platform
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.
The Full San Mateo County Distress Pipeline
San Mateo County At A Glance
San Mateo County is home to about 745,100 people and is tracked parcel by parcel across every city and unincorporated community inside it. Across San Mateo County the platform is tracking 1,996 tax-delinquent, 126 in pre-foreclosure and 91 under a notice of default.
The pressure is not spread evenly. Daly City, San Mateo, Half Moon Bay, Redwood City and South San Francisco carry 45% of it between them, out of 29 communities in the county.
By ZIP, 94019, 94044, 94080 and 94014 run heaviest. Sequoia Union High School District and San Mateo Union High School District contain the largest shares.
San Mateo County Tax Sale
California is a tax-deed state: counties don't sell lien certificates, they sell the property itself, and each county sets its own tax sale calendar rather than a statewide date. A home only reaches that sale after five years of default — and the owner can redeem it right up until it happens. That runway is the point of this page: the 1,996 properties above are the pipeline those auctions are eventually drawn from, at the stage where the owner still controls the outcome. See California tax auctions →
When the county sells: San Mateo County tax sale — dates, how bidding works, and every past and upcoming sale →
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.
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 October 12, 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.
When is the next San Mateo County tax sale?
California counties set their own tax sale calendars rather than following a statewide date, and a home only reaches one after five years of default — with the owner able to redeem it right up to the sale. The 1,996 San Mateo County properties on this page are the pipeline those auctions are drawn from, years before a sale date exists.
Does San Mateo County sell tax liens or tax deeds?
Tax deeds. California is a tax-deed state: there are no tax lien sales and no tax lien auctions here, because San Mateo County never sells lien certificates to investors — so there is no interest rate to bid down and no lien position to hold. After five years of default the county can sell the property itself at a tax deed sale, and the buyer receives a recorded deed. Almost everyone searching for tax lien properties in California is looking for that sale, and the 1,996 properties on this page are the pipeline it is drawn from.
Where can I find the San Mateo County delinquent tax roll?
The delinquent tax roll is public record, and it changes every time an owner pays. This page carries the current San Mateo County total, read daily. The address-level list — every tax-delinquent property with the owner of record, how long the taxes have gone unpaid, other recorded liens, open loans and an equity estimate — is inside Properant and starts with a free trial.
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.
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?
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Nearby County Rankings
Tax-Delinquent Properties By City In San Mateo County
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Daly City (204) · San Mateo (200) · Half Moon Bay (170) · Redwood City (165) · South San Francisco (138) · Pacifica (136) · 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.