San Mateo County property record for 21 Big Tree Rd, Woodside, CA 94062
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 1.5 ba · 1,610 sqft · built 1963 |
| Lot Size | 1.12 acres (48,839 sqft) |
| Owner | Trust Name on File |
| Last Sale | $1,017,500 (Jun 2012) |
| Tax Bill | $14,306 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 076-013-010 |
| Primary APN | 076-013-010 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,610 sqft Living Area |
| Gross Area | 3,220 sqft |
| 1st Floor Area | 1,610 sqft |
| Basement Area | 1,610 sqft |
| Family Room | Family Room |
| Year Built | Built 1963 |
|---|---|
| Effective Year Built | Effective 1963 |
| Lot Area | 48,839 sqft |
| View / Lot | Corner |
| Garage Type | Basement |
| Garage Area | 1,610 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 21 BIG TREE RD |
|---|---|
| City | WOODSIDE |
| State | CA |
| Zip | 94062-2602 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10025 |
| Legal Description | LOTS 408 409 WOODSIDE CO CLUB NO 4 |
| Legal Subdivision | WOODSIDE CO CLUB NO 4 |
| Legal Lot Number | 408 |
| Jurisdiction | SAN MATEO CA |
| Township / Civil Division | SAN MATEO |
| Census Block Group | 3 |
| Census Block | 3034 |
| Census Tract | 613400 |
21 Big Tree Rd is owner-occupied and held in a trust since May 2016.
Source: San Mateo County records, as of August 17, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 4161 EL CAMINO WAY, PALO ALTO, CA 94306-4006 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jun 29, 2012 · Amount on File |
| Deed Sale | Jun 29, 2012 · Amount on File |
| Deed Document Number | 201291803 |
| Last Transfer Date | May 4, 2016 |
| Transfer Doc | 0000042152 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 21 Big Tree Rd was $14,306 with a homeowner's exemption, up 1.1% from the year before.
Source: San Mateo County assessment roll, as of July 15, 2026
| Type | Name |
|---|---|
| State | California |
| County | San Mateo County |
| Elementary School District | Portola Valley Elementary School District (KG - 08) |
| Secondary School District | Sequoia Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $1,303,586 (+2%) Land $996,112 Building $307,474 | ||
| 2025 | $14,306.00 (+1.08%) Homeowner's exemption | $1,278,027 Land $976,581 Building $301,446 | |
| 2024 | $14,153.00 (+1.46%) | ||
| 2023 | $13,949.00 (+2.77%) Homeowner's exemption | $1,228,402 Land $938,660 Building $289,742 | $1,282,950 |
| 2022 | $13,573.00 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 21 Big Tree Rd in Zone X, an area of minimal flood risk, though there have been 5 flood claims nearby since 1986.
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 | 7 in force |
| Nearby Flood Claims | 5 (1986–1998) |
| Claims Outside the SFHA | 3 of 5 |
| 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.
Wildfire risk around 21 Big Tree Rd is moderate, ranking above 48% of the US, with a 0.1% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 48% of the US · lower than 71% of California |
|---|---|
| Wildfire Likelihood | 0.1% 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 83 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Starlink Satellite | 280 / 30 |
May also be available: AT&T, Cruzio, Etheric Networks, OLH Community Fiber, Verizon.
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