San Mateo County property record for 270 Atherton Ave, Atherton, CA 94027 · Last verified July 2026
| Property Type | Vacant Land |
|---|---|
| Details | 3 bd · 4 ba · 3,110 sqft · built 1949 |
| Lot Size | 2.37 acres (103,382 sqft) |
| Owner | 2 Company Names on File |
| Last Sale | $11,000,000 (Dec 2012) |
| Tax Bill | $149,219 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 070-032-190 |
| Primary APN | 070-032-190 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 4 Baths |
| Total Rooms | 7 Rooms |
| Building Area | 3,110 sqft Living Area |
| 1st Floor Area | 2,050 sqft |
| Year Built | Built 1949 |
|---|---|
| Effective Year Built | Effective 1949 |
| Lot Area | 103,382 sqft |
| Lot Dimensions | 310 ft deep x 334 ft wide |
| Garage Type | Attached |
| Garage Area | 1,130 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 270 ATHERTON AVE |
|---|---|
| City | ATHERTON |
| State | CA |
| Zip | 94027-5438 |
| Property Category | Vacant Land |
| Property Type | Vacant Land > Uncategorized |
| Legal Description | 2.35 AC MOL PTN OF LOT 42 POLHEMUS TRACT RSM 2/35 TOWN OF ATHERTON |
| Legal Subdivision | POLHEMUS TRACT |
| Legal Lot Number | 42 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 3 |
| Census Block | 3003 |
| Census Tract | 611400 |
Source: San Mateo County records · APN 070-032-190
Assessment roll updated July 15, 2026 · Last verified July 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 File |
|---|---|
| Mailing Address | 155 BOVET RD, 770, SAN MATEO, CA 94402-3153 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Dec 14, 2012 · Amount on Record |
| Deed Sale | Dec 14, 2012 · Amount on Record |
| Deed Document Number | 2012188492 |
| Prior Transfer Date | Mar 31, 1995 |
| Prior Transfer Doc | 0000038955 |
| Record Updated | Sep 20, 2026 |
Source: San Mateo County records · Assessment roll updated July 15, 2026 · Last verified July 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) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $13,753,824 (+2%) Land $13,753,824 | |
| 2025 | $149,219.00 (+2.82%) | $13,484,142 (+4.04%) Land $13,484,142 |
| 2023 | $145,122.00 (+2.83%) | $12,960,538 Land $12,960,538 |
| 2022 | $141,126.00 |
Source: FEMA National Flood Hazard Layer, San Mateo County (06081C), updated September 10, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060816114003, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Flood Insurance Cost | Premium on Record median of 10 individual NFIP policies nearby |
| Nearby Flood Policies | 10 in force |
| Nearby Flood Claims | 1 (2022) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Dec 2022, rainfall accumulation, Severe Winter Storms, Flooding, Landslides, And Mudslides |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
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, availability as of December 31, 2025 · Published October 2026 · based on 136 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Race Telecommunications | Fiber | 10,000 / 10,000 |
| AT&T | Fiber | 5,000 / 5,000 |
| Xfinity | Cable | 2,000 / 250 |
| Verizon | Fixed Wireless | 300 / 20 |
May also be available at this address: AT&T, Etheric Communications, LLC.. Availability varies by address; speeds are provider-advertised maximums, not measured.
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