San Mateo County property record for 333 Walsh Rd, Atherton, CA 94027
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 3.5 ba · 5,160 sqft · built 1902 |
| Lot Size | 1.43 acres (62,671 sqft) |
| Owner | 2 Company Names on Record |
| Tax Bill | $5,518 (2025) |
| Deeds & Mortgages | Mar 2021 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 074-040-390 |
| Primary APN | 074-040-390 |
|---|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 10 Rooms |
| Stories | 3 Stories |
| Building Area | 5,160 sqft Living Area |
| 1st Floor Area | 2,330 sqft |
| 2nd Floor Area | 2,110 sqft |
| Family Room | Family Room |
| Year Built | Built 1902 |
|---|---|
| Effective Year Built | Effective 1902 |
| Lot Area | 62,671 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 333 WALSH RD |
|---|---|
| City | ATHERTON |
| State | CA |
| Zip | 94027-6436 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1001A |
| Legal Description | LOT 2 LEVISON ACRES NO 2 RSM 68/36 |
| Legal Subdivision | LEVISON ACRES NO 2 |
| Legal Lot Number | 2 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 3 |
| Census Block | 3008 |
| Census Tract | 611400 |
Source: San Mateo County records, as of September 2, 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 Record |
|---|---|
| Mailing Address | 1316 ADDIEWELL PL, SAN JOSE, CA 95120-3904 |
| Owner Type | Company |
| Vesting | Trust, Family Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Dec 16, 2004 |
| Transfer Doc | 0000002344 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SAN MATEO CA |
| Recording Date | Mar 5, 2021 |
| Property Address | 333 WALSH RD, ATHERTON, CA 94027-6436 |
| Document Number | 0000037069 |
| Map Reference | MB 68 PG 36 |
| Instrument Date | Feb 8, 2021 |
| Instrument | 2021-037069 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 1 BUSH ST STE 650, 650, SAN FRANCISCO, CA 94104-4412 |
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 | Las Lomitas Elementary School District (KG - 08) |
| Secondary School District | Sequoia Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $213,754 (+2%) Land $138,259 Building $75,495 | |
| 2025 | $5,518.00 (+6.36%) | $209,564 (+4.04%) Land $135,549 Building $74,015 |
| 2023 | $5,188.00 (+2.25%) | $201,429 Land $130,287 Building $71,142 |
| 2022 | $5,074.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
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 |
| Flood Insurance Cost | Premium on Record median of 10 policies |
| Nearby Flood Policies | 10 in force |
| Nearby Flood Claims | 1 (2022) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Dec 2022 · Severe Winter Storms, Flooding, Landslides, And Mudslides |
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: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 99.8% of the US · lower than 99.8% 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 589 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Cruzio Fixed Wireless | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
May also be available: Race Communications, Sonic Telecom, T-Mobile.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures