Santa Clara County property record for 403 Wilson Ave, Sunnyvale, CA 94086
| Property Type | Multi-Family Dwellings |
|---|---|
| Details | 2,041 sqft · built 1963 |
| Lot Size | 0.162 acres (7,035 sqft) |
| Owner | Trust Name on File |
| Last Sale | $825,000 (Aug 2012) |
| Tax Bill | $12,107 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 209-21-055 |
| Primary APN | 209-21-055 |
|---|
| Units | 2 Units |
|---|---|
| Stories | 1 Story |
| Building Area | 2,041 sqft Living Area |
| 1st Floor Area | 2,041 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Elevator | Elevator |
| Year Built | Built 1963 |
|---|---|
| Effective Year Built | Effective 1963 |
| Architectural Style | H-Shape |
| Construction Type | Wood |
| Lot Area | 7,035 sqft (0.162 acres) |
| Lot Dimensions | 105 ft deep x 67 ft wide |
| Garage Type | Attached |
| Cooling System | None |
|---|
| Street Address | 403 WILSON AVE |
|---|---|
| City | SUNNYVALE |
| State | CA |
| Zip | 94086-6356 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Multi-Family Dwellings |
| Local Zoning Code | R2 |
| Legal Description | LOT 1 |
| Legal Subdivision | CASTLE MANOR |
| Legal Lot Number | 1 |
| Jurisdiction | SANTA CLARA CA |
| Township / Civil Division | SAN JOSE |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 508602 |
403 Wilson Ave, a residential property, is owner-occupied and held in a trust since May 2014.
Source: Santa Clara County records, as of July 27, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 403 WILSON AVE, B, SUNNYVALE, CA 94086-6356 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Aug 28, 2012 · Amount on File |
| Deed Sale | Aug 28, 2012 · Amount on File |
| Prior Sale | Oct 12, 2007 |
| Deed Document Number | 201221823938 |
| Last Transfer Date | May 29, 2014 |
| Transfer Doc | 0022616410 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 403 Wilson Ave was $12,107 with a homeowner's exemption.
Source: Santa Clara County assessment roll, as of July 27, 2026
| Type | Name |
|---|---|
| State | California |
| County | Santa Clara County |
| Municipality | Sunnyvale City |
| Secondary School District | Fremont Union High School District (09 - 12) |
| Elementary School District | Sunnyvale Elementary School District (KG - 08) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,036,235 (+2%) Land $753,629 Building $282,606 | |
| 2025 | $12,107.00 Homeowner's exemption | $1,015,917 Land $738,852 Building $277,065 |
| 2023 | $11,564.00 (+1.6%) Homeowner's exemption | $976,469 Land $710,162 Building $266,307 |
| 2022 | $11,382.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 403 Wilson Ave in Zone X, an area of moderate flood risk.
Source: FEMA National Flood Hazard Layer, effective January 18, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 2 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.
The area around 403 Wilson Ave has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within 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 | CITY OF SUNNYVALE serves 157,566 people · EPA ID CA4310014 |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Sep 2024 |
| Lead | Under 1 ppb (2023–2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 63 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 774 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| Ridge Wireless Fixed Wireless | 100 / 60 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks, Sail Internet, Verizon.
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