San Mateo County property record for 80 Valley Ct, Atherton, CA 94027
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 4.5 ba · 8,000 sqft · built 1998 |
| Lot Size | 9.23 acres (402,436 sqft) |
| Owner | Company Name on Record |
| Last Sale | $736,363 (Jun 1997) |
| Tax Bill | $50,549 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 073-141-330 |
| Primary APN | 073-141-330 |
|---|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 4.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 15 Rooms |
| Building Area | 8,000 sqft Living Area |
| 1st Floor Area | 4,870 sqft |
| 2nd Floor Area | 3,130 sqft |
| Family Room | Family Room |
| Study | Study |
| Year Built | Built 1998 |
|---|---|
| Effective Year Built | Effective 1998 |
| Lot Area | 402,436 sqft |
| Garage Area | 990 sqft |
| Parking Spaces | 4 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 80 VALLEY RD |
|---|---|
| City | SAN CARLOS |
| State | CA |
| Zip | 94070 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1003A |
| Legal Description | PARCEL 1 9.239 AC MOL PARCEL MAP VOL 62/61-62 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 2 |
| Census Block | 2011 |
| Census Tract | 613300 |
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 | 80 VALLEY CT, ATHERTON, CA 94027-6472 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jun 11, 1997 · Amount on Record |
| Deed Sale | Jun 11, 1997 · Amount on Record |
| Deed Document Number | 199770082 |
| Record Updated | Sep 20, 2026 |
Source: San Mateo County assessment roll, as of July 15, 2026
| Type | Name |
|---|---|
| State | California |
| County | San Mateo County |
| Municipality | Woodside Town |
| 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 | $4,549,326 (+2%) Land $1,329,017 Building $3,220,309 | |
| 2025 | $50,549.00 (+2.94%) | $4,460,124 (+4.04%) Land $1,302,958 Building $3,157,166 |
| 2023 | $49,105.00 (+2.8%) | $4,286,934 Land $1,252,363 Building $3,034,571 |
| 2022 | $47,766.00 |
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 | 1 in force |
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 64% of the US · lower than 78% of California |
|---|---|
| Wildfire Likelihood | 0.05% 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 27 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Cruzio Fixed Wireless | 1,000 / 1,000 |
| Starlink Satellite | 280 / 30 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Etheric Networks, Race Communications.
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