San Mateo County property record for 230 Polhemus Ave, Atherton, CA 94027 · Last verified July 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 5 Beds |
| Bathrooms | 5.5 Baths |
| Year Built | Built 2013 |
| Square Footage | 9,672 sqft Living Area |
| Lot Size | 38,749 sqft (0.89 acres) |
| Garage | 730 sqft |
| Last Sale | $14,500,000 (2013) |
| Tax Bill | $197,868.00 (2025) |
| Primary APN | 070-022-440 |
|---|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 5.5 Baths |
| Partial Baths | 1 Partial Baths |
| Total Rooms | 19 Rooms |
| Building Area | 9,672 sqft Living Area |
| 1st Floor | 3,389 sqft 1st Floor |
| 2nd Floor | 2,906 sqft 2nd Floor |
| Basement Area | 3,377 sqft Basement |
| Finished Basement | 3,377 sqft Finished |
| Family Room | Family Room |
| Stories | 2 Stories |
| Year Built | Built 2013 |
|---|---|
| Effective Year Built | Effective 2013 |
| Lot Area | 38,749 sqft (0.89 acres) |
| Depth X Width | 250 ft x 155 ft Depth x Width |
| Parking Spaces | 3 Parking Spaces |
| Garage Area | 730 sqft Garage |
| Cooling System | Central Cooling |
|---|---|
| Heating System | Central Heating |
| Street Address | 230 POLHEMUS AVE |
|---|---|
| City | ATHERTON |
| State | CA |
| Zip | 94027-5439 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | 155 FT X 250 FT ON POLHEMUS AVE BEING SLY PTN OF LOT 21 POLHEMUS TRACT RSM 2/35 TOWN OF ATHERTON |
| Legal Subdivision | POLHEMUS TRACT |
| Legal Lot Number | 21 |
| Jurisdiction | SAN MATEO CA |
| Minor Civil Division | SAN MATEO |
| Census Blockgroup | 3 |
| Census Block | 3000 |
| Census Tract | 611400 |
Source: San Mateo County records · APN 070-022-440
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 | 230 POLHEMUS AVE, ATHERTON, CA 94027-5439 |
| Owner Type | Owner is a Company |
| Vesting | Owner is a Trust, Trust |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | May 23, 2013 · Amount on Record |
| Deed Sale | May 23, 2013 · Amount on Record |
| Prior Sale | Jun 10, 2011 · Amount on Record |
| Deed Doc Number | 201377710 |
| Prior Transfer Date | Mar 19, 2008 |
| Prior Transfer Doc | 0000126048 |
| Record Refreshed | Sep 20, 2026 |
| Document Type | Affidavit of Death |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Mar 09, 2020 |
| Property Address | 230 POLHEMUS AVE, ATHERTON, CA 94027-5439 |
| Document Number | 0000020963 |
| Instrument Date | Jan 21, 2020 |
| Instrument | 20963 |
| Transaction Type | Transfer |
| Record Updated | Apr 14, 2020 |
| Title Company | ATTORNEY ONLY |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 230 POLHEMUS AVE ATHERTON CA 940275439, ATHERTON, CA 94027-5439 |
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 | $18,212,823 (+2%) Land $8,516,064 Building $9,696,759 | |
| 2025 | $197,868.00 (+2.81%) | $17,855,710 (+4.04%) Land $8,349,083 Building $9,506,627 |
| 2023 | $192,460.00 (+2.85%) | $17,162,353 Land $8,024,879 Building $9,137,474 |
| 2022 | $187,123.00 |
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