San Mateo County property record for 291 Atherton Ave, Atherton, CA 94027
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 5.5 ba · 8,730 sqft · built 1995 |
| Lot Size | 2.01 acres (87,556 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $22,200,000 (Jan 2026) |
| Tax Bill | $181,653 (2025) |
| Deeds & Mortgages | Jan 2026 Sale Jul 2021 Sale + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 073-230-250 |
| Primary APN | 073-230-250 |
|---|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 5.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 16 Rooms |
| Stories | 2 Stories |
| Building Area | 8,730 sqft Living Area |
| 1st Floor Area | 5,720 sqft |
| 2nd Floor Area | 3,010 sqft |
| Family Room | Family Room |
| Study | Study |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1995 |
|---|---|
| Effective Year Built | Effective 1995 |
| Architectural Style | Contemporary |
| Exterior Material | Stucco |
| Foundation Type | Concrete |
| Roof Material | Tar & Gravel |
| Lot Area | 87,556 sqft |
| Lot Dimensions | 318 ft deep x 275 ft wide |
| Garage Area | 630 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 291 ATHERTON AVE |
|---|---|
| City | ATHERTON |
| State | CA |
| Zip | 94027-5454 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10000 |
| Legal Description | PARCEL 1 2.009 AC MOL PARCEL MAP VOL 54/1 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2011 |
| Census Tract | 611400 |
291 Atherton Ave is owner-occupied and held in a trust since January 2026.
Source: San Mateo County records, as of July 15, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 291 ATHERTON AVE, ATHERTON, CA 94027-5454 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Revocable Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Jan 21, 2026 | Grant Deed, Transfer CORNERSTONE TITLE COMPANY |
| Jul 2, 2021 | Grant Deed, Transfer LAWYERS TITLE COMPANY/CA, LAWYERS TITLE COMPANY |
| Dec 12, 2019 | Quit Claim Deed, Transfer ATTORNEY ONLY |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jan 21, 2026 · Amount on File |
| Deed Sale | Jan 21, 2026 · Amount on File |
| Prior Sale | Jul 2, 2021 · Amount on File |
| Deed Document Number | 20263147 |
| Prior Transfer Date | Dec 3, 2019 |
| Prior Transfer Doc | 0000105598 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Jan 21, 2026 |
| Property Address | 291 ATHERTON AVE, ATHERTON, CA 94027-5454 |
| Document Number | 0000003147 |
| Map Reference | MB 54 PG 1 |
| Instrument Date | Jan 16, 2026 |
| Instrument | 2026-003147 |
| Transaction Type | Transfer |
| Record Updated | Feb 13, 2026 |
| Title Company | CORNERSTONE TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Tax | $24,420.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 291 ATHERTON AVE, MENLO PARK, CA 94027-5454 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Jul 2, 2021 |
| Property Address | 291 ATHERTON AVE, ATHERTON, CA 94027-5454 |
| Document Number | 0000100614 |
| Map Reference | MB 54 PG 1 |
| Instrument Date | Jun 21, 2021 |
| Instrument | 2021-100614 |
| Transaction Type | Transfer |
| Record Updated | Oct 18, 2022 |
| Title Company | LAWYERS TITLE COMPANY/CA, LAWYERS TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Tax | $17,050.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 291 ATHERTON AVE, ATHERTON, CA 94027-5454 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Dec 12, 2019 |
| Property Address | 291 ATHERTON AVE, ATHERTON, CA 94027-5454 |
| Document Number | 0000105598 |
| Instrument Date | Dec 3, 2019 |
| Instrument | 105598 |
| Transaction Type | Transfer |
| Record Updated | Jan 14, 2020 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 291 ATHERTON AVE ATHERTON CA 940275454, ATHERTON, CA 94027-5454 |
The 2025 property tax bill for 291 Atherton Ave was $181,653, up 1.2% from the year before.
Source: San Mateo County assessment roll, as of July 15, 2026
| Type | Name |
|---|---|
| State | California |
| Municipality | Atherton Town |
| County | San Mateo County |
| Elementary School District | Las Lomitas Elementary School District (KG - 08) |
| Secondary School District | Sequoia Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $16,777,698 (+2%) Land $16,236,482 Building $541,216 | |
| 2025 | $181,653.00 (+1.21%) | $16,448,724 Land $15,918,120 Building $530,604 |
| 2024 | $179,476.00 (+1.58%) | |
| 2023 | $176,684.00 (+2.83%) | $15,810,000 Land $15,300,000 Building $510,000 |
| 2022 | $171,816.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 291 Atherton Ave in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 1995.
Source: FEMA National Flood Hazard Layer, effective September 10, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 13 policies |
| Nearby Flood Policies | 13 in force |
| Nearby Flood Claims | 2 (1995–1998) |
| Claims Outside the SFHA | 1 of 2 |
| Most Recent Claim | Feb 1998 · Severe Winter Storms And Flooding |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Wildfire risk around 291 Atherton Ave is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 98% of the US · lower than 98.4% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond ember reach |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | CALIFORNIA WATER SERVICE - BEAR GULCH private · serves 60,382 people · EPA ID CA4110006 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Feb 2025 |
| Lead | 4 ppb (2022–2024) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 136 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Race Communications Fiber | 10,000 / 10,000 |
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: Etheric Networks.
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