Alameda County property record for 3923 Wilson Ave, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 4 ba · 1,854 sqft · built 1946 |
| Lot Size | 0.182 acres (7,904 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $750,000 (May 2020) |
| Tax Bill | $12,080 (2025) |
| Deeds & Mortgages | Jul 2021 Mortgage May 2020 Sale & Mortgage + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 84B-568-2 |
| Primary APN | 84B-568-2 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 4 Baths |
| Total Rooms | 6 Rooms |
| Stories | 2 Stories |
| Building Area | 1,854 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1946 |
|---|---|
| Effective Year Built | Effective 1964 |
| Architectural Style | L-Shape |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Material | Composition Shingle |
| Lot Area | 7,904 sqft (0.182 acres) |
| Lot Dimensions | 152 ft deep x 52 ft wide |
| Parking Spaces | 1 Parking Space |
| Heating System | Floor/Wall Furnace |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 3923 WILSON AVE |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-3143 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | LOT: 00002 BLK: AR: 084B PAGE: 0568 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 2 |
| Census Block | 2006 |
| Census Tract | 430700 |
3923 Wilson Ave is owned and occupied by two individuals who bought it in May 2020.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 3923 WILSON AVE, CASTRO VALLEY, CA 94546-3143 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Jul 27, 2021 | Deed of Trust, Mortgage · Conventional Mortgage ACG FUNDING INC |
| May 28, 2020 | Grant Deed, Transfer · Conventional Mortgage UNITED WHOLESALE MORTGAGE |
| Sep 5, 2017 | Quit Claim Deed, Transfer Quitclaim |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 28, 2020 · Amount on File |
| Deed Sale | May 28, 2020 · Amount on File |
| Deed Document Number | 2020122317 |
| Prior Transfer Date | Jun 24, 1996 |
| Prior Transfer Doc | 0000162256 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 3923 WILSON AVE, CASTRO VALLEY, CA 94546-3143 |
| Transaction Type | Mortgage |
| Record Updated | Aug 16, 2021 |
| Name | Verified Name |
|---|---|
| Address | 3923 WILSON AVE, CASTRO VALLEY, CA 94546-3143 |
| Document Number | 0000258342 |
|---|---|
| Date | Jul 27, 2021 |
| Instrument | 2021258342 |
| Name | ACG FUNDING INC |
|---|---|
| Type | Mortgage Company |
| Address | ROWLAND HEIGHTS, CA 91748 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Aug 1, 2051 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | May 28, 2020 |
| Property Address | 3923 WILSON AVE, CASTRO VALLEY, CA 94546-3143 |
| Document Number | 0000122317 |
| Instrument Date | May 20, 2020 |
| Instrument | 2020122317 |
| Transaction Type | Transfer |
| Record Updated | Aug 19, 2021 |
| Title Company | OLD REPUBLIC TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 3923 WILSON AVE, CASTRO VALLEY, CA 94546-3143 |
| Document Number | 0000122318 |
|---|---|
| Date | May 28, 2020 |
| Instrument | 2020122318 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Jun 1, 2050 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Sep 5, 2017 |
| Property Address | 3923 WILSON AVE, CASTRO VALLEY, CA 94546-3143 |
| Document Number | 0000194002 |
| Instrument Date | Aug 28, 2017 |
| Instrument | 194002 |
| Transaction Type | Transfer |
| Record Updated | Oct 9, 2017 |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Living Trust |
| Address | 3923 WILSON AVE CASTRO VALLEY CA 945463143, CASTRO VALLEY, CA 94546-3143 |
The 2025 property tax bill for 3923 Wilson Ave was $12,080.
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 | $969,122 (+2%) Land $250,987 Building $718,135 | ||
| 2025 | $12,080.00 | $950,121 Land $246,066 Building $704,055 | |
| 2023 | $10,154.00 | $788,377 Land $236,513 Building $551,864 | $1,006,560 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 3923 Wilson Ave in Zone X, an area of minimal 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 minimal risk |
|---|---|
| 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 3923 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 938 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 in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Etheric Networks Fixed Wireless | 250 / 100 |
May also be available: GeoLinks, T-Mobile, Unwired, Verizon.
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