San Mateo County property record for 242 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 1990 |
| Square Footage | 6,130 sqft Living Area |
| Lot Size | 1.1 acres |
| Garage | Basement, 620 sqft |
| Occupancy | Owner Occupied |
| Tax Bill | $51,588.00 (2025) |
| Primary APN | 070-022-500 |
|---|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 5.5 Baths |
| Partial Baths | 1 Partial Baths |
| Total Rooms | 12 Rooms |
| Building Area | 6,130 sqft Living Area |
| Gross Area | 6,750 sqft Gross Area |
| 1st Floor | 3,410 sqft 1st Floor |
| 2nd Floor | 2,720 sqft 2nd Floor |
| Basement Area | 620 sqft Basement |
| Family Room | Family Room |
| Stories | 2 Stories |
| Study | Study |
| Fireplace | Fireplace |
| Fireplaces | 1 Fireplaces |
| Year Built | Built 1990 |
|---|---|
| Effective Year Built | Effective 1990 |
| Roof Material | Other (not Classified) Roof |
| Lot Area | 48,314 sqft |
| Depth X Width | 229 ft x 210 ft Depth x Width |
| Parking Spaces | 3 Parking Spaces |
| Garage Type | Basement Garage |
| Garage Area | 620 sqft Garage |
| Cooling System | Central Cooling |
|---|---|
| Heating System | Central Heating |
| Street Address | 242 POLHEMUS AVE |
|---|---|
| City | ATHERTON |
| State | CA |
| Zip | 94027-5439 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | LOT 2 POLHEMUS ESTATES RSM 46/42 TOWN OF ATHERTON |
| Legal Subdivision | POLHEMUS ESTATES |
| Legal Lot Number | 2 |
| Jurisdiction | SAN MATEO CA |
| Minor Civil Division | SAN MATEO |
| Census Blockgroup | 3 |
| Census Block | 3000 |
| Census Tract | 611400 |
Source: San Mateo County records · APN 070-022-500
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 | 242 POLHEMUS AVE, ATHERTON, CA 94027-5439 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is a Company |
| Vesting | Owner is a Trust, Trust |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | May 06, 1994 |
| Deed Sale | May 06, 1994 |
| Deed Doc Number | 199480746 |
| Last Transfer Date | May 04, 2015 |
| Transfer Doc | 0000073561 |
| Record Refreshed | 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 and assessed market value are set for property tax purposes and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $4,681,000 (+2%) Land $2,340,500 Building $2,340,500 | ||
| 2025 | $51,588.00 (+2.85%) Homeowner's exemption | $4,589,216 (+4.04%) Land $2,294,608 Building $2,294,608 | |
| 2023 | $50,158.00 (+2.85%) Homeowner's exemption | $4,411,012 Land $2,205,506 Building $2,205,506 | $7,391,610 |
| 2022 | $48,767.00 |
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