San Mateo County property record for 311 Stockbridge Ave, Atherton, CA 94027
| Property Type | Single Family Home |
|---|---|
| Details | 6 bd · 5.5 ba · 5,300 sqft · built 1920 |
| Lot Size | 1 acres (43,562 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $5,875,000 (May 2011) |
| Tax Bill | $83,788 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 070-011-280 |
| Primary APN | 070-011-280 |
|---|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 5.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 13 Rooms |
| Stories | 2 Stories |
| Building Area | 5,300 sqft Living Area |
| Gross Area | 6,612 sqft |
| 1st Floor Area | 2,940 sqft |
| 2nd Floor Area | 2,360 sqft |
| Basement Area | 1,312 sqft |
| Family Room | Family Room |
| Study | Study |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1920 |
|---|---|
| Effective Year Built | Effective 1920 |
| Architectural Style | Spanish |
| Exterior Material | Stucco |
| Roof Material | Tile |
| Lot Area | 43,562 sqft |
| Lot Dimensions | 6,784 ft deep x 6,784 ft wide |
| Garage Area | 749 sqft |
| Parking Spaces | 3 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 311 STOCKBRIDGE AVE |
|---|---|
| City | ATHERTON |
| State | CA |
| Zip | 94027-6442 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10000 |
| Legal Description | PARCEL B 1.00 AC MOL PARCEL MAP VOL 52/64 |
| Legal Subdivision | POLHEMUS TRACT |
| Legal Lot Number | 63-64 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 3 |
| Census Block | 3005 |
| Census Tract | 611400 |
Source: San Mateo County records, as of July 15, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Company Names on Record |
|---|---|
| Mailing Address | 311 STOCKBRIDGE AVE, ATHERTON, CA 94027-6442 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 17, 2011 · Amount on Record |
| Deed Sale | May 17, 2011 · Amount on Record |
| Deed Document Number | 201155183 |
| Prior Transfer Date | Mar 30, 2004 |
| Prior Transfer Doc | 0000065868 |
| Record Updated | Oct 29, 2026 |
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 | Assessed Market Value |
|---|---|---|---|
| 2026 | $7,677,450 (+2%) Land $3,838,725 Building $3,838,725 | ||
| 2025 | $83,788.00 (+2.81%) | $7,526,912 (+4.04%) Land $3,763,456 Building $3,763,456 | |
| 2023 | $81,495.00 (+2.85%) | $7,234,634 Land $3,617,317 Building $3,617,317 | $6,930,000 |
| 2022 | $79,239.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
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 Record median of 10 policies |
| Nearby Flood Policies | 10 in force |
| Nearby Flood Claims | 1 (2022) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Dec 2022 · Severe Winter Storms, Flooding, Landslides, And Mudslides |
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.
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 | Direct burnable vegetation |
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 153 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 · DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: Cruzio, Etheric Networks, GeoLinks, T-Mobile.
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