San Mateo County property record for 53 Atherton Ave, Atherton, CA 94027
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3.5 ba · 10,277 sqft · built 2017 |
| Lot Size | 1.27 acres (55,519 sqft) |
| Owner | Company Name on Record |
| Last Sale | $5,395,000 (Mar 2012) |
| Tax Bill | $150,797 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 070-230-200 |
| Primary APN | 070-230-200 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 12 Rooms |
| Stories | 1 Story |
| Building Area | 10,277 sqft Living Area |
| 1st Floor Area | 5,222 sqft |
| Basement Area | 5,055 sqft |
| Finished Basement | 5,055 sqft |
| Family Room | Family Room |
| Study | Study |
| Year Built | Built 2017 |
|---|---|
| Effective Year Built | Effective 2017 |
| Lot Area | 55,519 sqft |
| Lot Dimensions | 384 ft deep x 144 ft wide |
| Parking Spaces | 3 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 53 ATHERTON AVE |
|---|---|
| City | ATHERTON |
| State | CA |
| Zip | 94027-4048 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1001A |
| Legal Description | 1.274 ACS ON ATHERTON AVE ADJ LOT 6 OF ARDEN WOOD PTN LOT 1 VALPARAISO PARK RSM 19/10 TOWN OF ATHERTON |
| Legal Subdivision | PARAISO PARK |
| Legal Lot Number | 6,1 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 611400 |
Source: San Mateo County records, as of July 15, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 53 ATHERTON AVE, ATHERTON, CA 94027-4048 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Mar 15, 2012 · Amount on Record |
| Deed Sale | Mar 15, 2012 · Amount on Record |
| Deed Document Number | 201235332 |
| Prior Transfer Date | Dec 6, 1994 |
| Prior Transfer Doc | 0000001664 |
| Record Updated | Sep 20, 2026 |
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 |
|---|---|---|
| 2026 | $13,811,407 (+2%) Land $6,847,893 Building $6,963,514 | |
| 2025 | $150,797.00 (+4.78%) | $13,540,596 (+4.04%) Land $6,713,621 Building $6,826,975 |
| 2023 | $143,924.00 (+2.41%) | $13,014,800 Land $6,452,924 Building $6,561,876 |
| 2022 | $140,536.00 |
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 |
| 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 94% of the US · lower than 96% of California |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | Direct burnable vegetation |
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