San Mateo County property record for 402 Middlefield Rd, Atherton, CA 94027
| Property Type | Single Family Home |
|---|---|
| Details | 6 bd · 4.5 ba · 5,850 sqft · built 1902 |
| Lot Size | 2.52 acres (110,012 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $11,225,000 (Nov 2025) |
| Tax Bill | $10,019 (2025) |
| Deeds & Mortgages | Nov 2025 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 061-360-160 |
| Primary APN | 061-360-160 |
|---|
| Bedrooms | 6 Beds |
|---|---|
| Full Baths | 4.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 14 Rooms |
| Stories | 2 Stories |
| Building Area | 5,850 sqft Living Area |
| Gross Area | 7,060 sqft |
| 1st Floor Area | 2,950 sqft |
| 2nd Floor Area | 2,250 sqft |
| Basement Area | 1,210 sqft |
| Family Room | Family Room |
| Study | Study |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1902 |
|---|---|
| Effective Year Built | Effective 1902 |
| Lot Area | 110,012 sqft |
| Lot Dimensions | 322 ft deep x 342 ft wide |
| View / Lot | Corner |
| Garage Area | 400 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 402 MIDDLEFIELD RD |
|---|---|
| City | ATHERTON |
| State | CA |
| Zip | 94027-3216 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1001A |
| Legal Description | 2.525 AC MOL PARCEL 1 PARCEL MAP VOL 28/40 |
| Legal Subdivision | LANDS/CHAS GOODALL ESTATE |
| Legal Lot Number | D |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 1 |
| Census Block | 1005 |
| Census Tract | 611500 |
Source: San Mateo County records · APN 061-360-160
Assessment roll updated July 15, 2026 · Last verified August 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 402 MIDDLEFIELD RD, ATHERTON, CA 94027-3216 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Nov 26, 2025 · Amount on Record |
| Deed Sale | Nov 26, 2025 · Amount on Record |
| Deed Document Number | 202564663 |
| Prior Transfer Date | Nov 05, 2007 |
| Prior Transfer Doc | 0000164321 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Nov 26, 2025 |
| Property Address | 402 MIDDLEFIELD RD, ATHERTON, CA 94027-3216 |
| Document Number | 0000064663 |
| Map Reference | MB 3 PG 1 |
| Instrument Date | Nov 17, 2025 |
| Instrument | 2025-064663 |
| Transaction Type | Transfer |
| Record Updated | Jan 09, 2026 |
| Title Company | LAWYERS TITLE COMPANY/CA, LAWYERS TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Tax | $12,347.50 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 402 MIDDLEFIELD RD, ATHERTON, CA 94027-3216 |
Source: San Mateo County records · Assessment roll updated July 15, 2026 · Last verified August 2026
| Type | Name |
|---|---|
| State | California |
| Municipality | Atherton Town |
| County | San Mateo County |
| Elementary School District | Menlo Park City Elementary School District (KG - 08) |
| Secondary School District | Sequoia Union High School District (09 - 12) |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $11,225,000 (+1,652.39%) Land $10,000,000 Building $1,225,000 | ||
| 2025 | $10,019.00 (+2.89%) | $640,554 (+4.04%) Land $332,673 Building $307,881 | |
| 2024 | $9,738.00 (+2.58%) | ||
| 2023 | $9,493.00 (+2.62%) | $615,682 Land $319,755 Building $295,927 | $6,322,500 |
| 2022 | $9,251.00 |
Source: FEMA National Flood Hazard Layer as of September 10, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 4 in force |
| Wildfire Risk | Low lower than 96% of the US · lower than 97.4% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | Direct burnable vegetation at the parcel |
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: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| Race Telecommunications Fiber | 10,000 / 10,000 |
| Xfinity Cable | 2,000 / 250 |
| AT&T Fiber · DSL | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: Sonic Telecom, T-Mobile USA.
Based on FCC filings for 167 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | CALIFORNIA WATER SERVICE - BEAR GULCH private · serves 60,382 people |
|---|---|
| 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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.
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