San Mateo County property record for 75 Winchester Dr, Atherton, CA 94027
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3.5 ba · 3,240 sqft · built 1924 |
| Lot Size | 0.325 acres (14,138 sqft) |
| Owner | 2 Trust Names on File |
| Tax Bill | $17,724 (2025) |
| Deeds & Mortgages | Jul 2018 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 070-223-070 |
| Primary APN | 070-223-070 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 3,240 sqft Living Area |
| 1st Floor Area | 1,440 sqft |
| 2nd Floor Area | 1,800 sqft |
| Family Room | Family Room |
| Study | Study |
| Year Built | Built 1924 |
|---|---|
| Effective Year Built | Effective 1924 |
| Lot Area | 14,138 sqft (0.325 acres) |
| Lot Dimensions | 141 ft deep x 102 ft wide |
| View / Lot | Corner |
| Garage Area | 210 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 75 WINCHESTER DR |
|---|---|
| City | ATHERTON |
| State | CA |
| Zip | 94027-4040 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1001A |
| Legal Description | 102.20 FT X 135 FT MOL COR MAPLE WAY & WINCHESTER DR NWLY PTN OF LOT 13 WINCHESTER PROPERTY RSM 11/41 42 TOWN OF ATHERTON |
| Legal Subdivision | WINCHESTER PROPERTY |
| Legal Lot Number | 13 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 1 |
| Census Block | 1002 |
| Census Tract | 611400 |
75 Winchester Dr is owner-occupied and held in a trust since June 2018.
Source: San Mateo County records, as of July 15, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 75 WINCHESTER DR, ATHERTON, CA 94027-4040 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Jun 14, 2018 |
| Transfer Doc | 0000055272 |
| Record Updated | Sep 20, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Jul 16, 2018 |
| Property Address | 75 WINCHESTER DR, ATHERTON, CA 94027-4040 |
| Document Number | 0000055272 |
| Instrument Date | Jun 14, 2018 |
| Instrument | 55272 |
| Transaction Type | Transfer |
| Record Updated | Aug 1, 2018 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 75 WINCHESTER DR ATHERTON CA 940274040, ATHERTON, CA 94027-4040 |
The 2025 property tax bill for 75 Winchester Dr was $17,724 with a homeowner's exemption.
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 | Menlo Park City Elementary School District (KG - 08) |
| Secondary School District | Sequoia Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $1,380,695 (+2%) Land $514,051 Building $866,644 | ||
| 2025 | $17,724.00 Homeowner's exemption | $1,353,624 Land $503,972 Building $849,652 | |
| 2023 | $16,848.00 (+2.53%) Homeowner's exemption | $1,301,063 Land $484,403 Building $816,660 | $3,381,840 |
| 2022 | $16,433.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 75 Winchester Dr in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 1998.
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 |
| Nearby Flood Policies | 2 in force |
| Nearby Flood Claims | 2 (1998) |
| Claims Outside the SFHA | 2 of 2 |
| Most Recent Claim | Feb 1998 · Severe Winter Storms And Flooding |
| Claims by Event |
|
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 75 Winchester Dr 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 99.1% of the US · lower than 99.2% 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 283 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Race Communications Fiber | 10,000 / 10,000 |
| Xfinity Cable | 2,000 / 250 |
| AT&T Fixed Wireless · DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Etheric Networks, GeoLinks, T-Mobile.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures