Alameda County property record for 15929 Windsor Dr, Castro Valley, CA 94578 · Last verified August 2026
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 5 ba · 1,239 sqft · built 1947 |
| Lot Size | 0.131 acres (5,711 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $1,647 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 80A-163-8 |
| Primary APN | 80A-163-8 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 5 Baths |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,239 sqft Living Area |
| Year Built | Built 1947 |
|---|---|
| Effective Year Built | Effective 1947 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 5,711 sqft (0.131 acres) |
| Street Address | 15929 WINDSOR DR |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94578-1415 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00014 BLK: 000F TR: 0813 |
| Legal Tract | 0813 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 1 |
| Census Block | 1004 |
| Census Tract | 430500 |
Source: Alameda County records · APN 80A-163-8
Assessment roll updated August 5, 2026 · Last verified August 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 15929 WINDSOR DR, CASTRO VALLEY, CA 94578-1415 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
Source: Alameda County records · Assessment roll updated August 5, 2026 · Last verified August 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Unified School District | San Lorenzo Unified School District (KG - 12) |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $67,023 (-7.65%) Land $40,763 Building $33,260 | ||
| 2025 | $1,647.00 (+4.77%) Homeowner's exemption | $72,572 (+4.04%) Land $39,964 Building $32,608 | |
| 2023 | $1,572.00 Homeowner's exemption | $69,754 Land $38,412 Building $31,342 | $732,870 |
Source: FEMA National Flood Hazard Layer, Alameda County (06001C), updated May 25, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060014305001, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Nearby Flood Claims | 2 (1978) |
| Most Recent Claim | Jan 1978, tidal / storm surge |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
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.
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