Alameda County property record for 4136 Wilson Ave, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.5 ba · 1,659 sqft · built 1963 |
| Lot Size | 0.207 acres (9,006 sqft) |
| Owner | Trust Name on File |
| Last Sale | $570,000 (Mar 2014) |
| Tax Bill | $9,114 (2025) |
| Deeds & Mortgages | Oct 2020 Transfer |
| Flood Zone | Zone X (moderate risk) |
| APN | 84D-1358-8-5 |
| Primary APN | 84D-1358-8-5 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 1,659 sqft Living Area |
| Year Built | Built 1963 |
|---|---|
| Effective Year Built | Effective 1964 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 9,006 sqft (0.207 acres) |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 4136 WILSON AVE |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-3148 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00005 BLK: 0008 AR: 084D PAGE: 1358 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 2 |
| Census Block | 2000 |
| Census Tract | 430700 |
4136 Wilson Ave is held in a trust since September 2020.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 5162 SILVER BIRCH DR, CASTRO VALLEY, CA 94552-5521 |
| 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 | Mar 19, 2014 · Amount on File |
| Deed Sale | Mar 19, 2014 · Amount on File |
| Prior Sale | Jun 3, 2010 · Amount on File |
| Deed Document Number | 201471020 |
| Last Transfer Date | Sep 18, 2020 |
| Transfer Doc | 0000270930 |
| Record Updated | Oct 29, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Oct 13, 2020 |
| Property Address | 4136 WILSON AVE, CASTRO VALLEY, CA 94546-3148 |
| Document Number | 0000270930 |
| Instrument Date | Sep 18, 2020 |
| Instrument | 270930 |
| Transaction Type | Transfer |
| Record Updated | Jan 6, 2021 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 5162 SILVER BIRCH DR CASTRO VALLEY CA 945525521, CASTRO VALLEY, CA 94552-5521 |
| Investor | Possibly a Property Investor |
The 2025 property tax bill for 4136 Wilson Ave was $9,114.
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Unified School District | Castro Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $712,681 (+2%) Land $213,804 Building $498,877 | ||
| 2025 | $9,114.00 | $698,711 Land $209,613 Building $489,098 | |
| 2023 | $8,767.00 | $671,584 Land $201,475 Building $470,109 | $1,131,840 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 4136 Wilson Ave in Zone X, an area of moderate flood risk, though there have been 1 flood claim nearby since 1998.
Source: FEMA National Flood Hazard Layer, effective May 25, 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 | 5 in force |
| Nearby Flood Claims | 1 (1998) |
| Most Recent Claim | Feb 1998 · Severe Winter Storms And Flooding |
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 4136 Wilson Ave is low, with a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 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 | EAST BAY MUD serves 1,468,000 people · EPA ID CA0110005 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Dec 2021 |
| Lead | Under 1 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 724 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: Etheric Networks, GeoLinks, T-Mobile.
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