Alameda County property record for 3864 Wilson Ave, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,194 sqft · built 1955 |
| Lot Size | 0.108 acres (4,692 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $1,150,000 (Feb 2026) |
| Tax Bill | $4,394 (2025) |
| Deeds & Mortgages | Feb 2026 Sale & Mortgage |
| Flood Zone | Zone X (moderate risk) |
| APN | 84D-1342-53 |
| Primary APN | 84D-1342-53 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,194 sqft Living Area |
| Year Built | Built 1955 |
|---|---|
| Effective Year Built | Effective 1957 |
| Architectural Style | L-Shape |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Material | Tar & Gravel |
| Lot Area | 4,692 sqft (0.108 acres) |
| Heating System | Forced Air with A/C |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 3864 WILSON AVE |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-3065 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00005 BLK: 0002 TR: 1531 |
| Legal Subdivision | TR 1531 |
| Legal Tract | 1531 |
| Legal Block | 2 |
| Legal Lot Number | 5 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 2 |
| Census Block | 2002 |
| Census Tract | 430700 |
3864 Wilson Ave is owned and occupied by two individuals who bought it in February 2026.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 3864 WILSON AVE, CASTRO VALLEY, CA 94546-3065 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
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 | 2 Names on Deed |
|---|---|
| Last Sale | Feb 18, 2026 · Amount on File |
| Deed Sale | Feb 18, 2026 · Amount on File |
| Prior Sale | Mar 15, 1994 · Amount on File |
| Deed Document Number | 202621805 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Feb 18, 2026 |
| Property Address | 3864 WILSON AVE, CASTRO VALLEY, CA 94546-3065 |
| Document Number | 0000021805 |
| Map Reference | MB 35 PG 92 |
| Instrument Date | Feb 5, 2026 |
| Instrument | 2026021805 |
| Transaction Type | Transfer |
| Record Updated | Mar 26, 2026 |
| Title Company | OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $1,265.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 3864 WILSON AVE, CASTRO VALLEY, CA 94546-3065 |
| Document Number | 0000021806 |
|---|---|
| Date | Feb 18, 2026 |
| Instrument | 2026021806 |
| Name | CMG MORTGAGE INC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Mar 1, 2056 |
The 2025 property tax bill for 3864 Wilson Ave was $4,394, up 2.5% from the year before.
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 | $304,871 (+2.05%) Land $93,613 Building $218,258 | ||
| 2025 | $4,394.00 (+2.52%) Homeowner's exemption | $298,757 Land $91,778 Building $213,979 | |
| 2024 | $4,286.00 (+2.05%) | ||
| 2023 | $4,200.00 Homeowner's exemption | $293,885 Land $88,214 Building $205,671 | $739,620 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
FEMA maps place 3864 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 3864 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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