Alameda County property record for 15918 Windsor Dr, Castro Valley, CA 94578 · Last verified August 2026
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 969 sqft · built 1947 |
| Lot Size | 0.126 acres (5,500 sqft) |
| Owner | Individual Name on File |
| Last Sale | $474,000 (Sep 2006) |
| Tax Bill | $8,366 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 80A-162-12 |
| Primary APN | 80A-162-12 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 969 sqft Living Area |
| Year Built | Built 1947 |
|---|---|
| Effective Year Built | Effective 1950 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 5,500 sqft (0.126 acres) |
| Street Address | 15918 WINDSOR DR |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94578-1416 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00015 BLK: 000E TR: 0813 |
| Legal Subdivision | TRACT 813 ALAMEDA COUNTY CALIFORNIA |
| Legal Tract | 0813 |
| Legal Lot Number | 15 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 1 |
| Census Block | 1005 |
| Census Tract | 430500 |
Source: Alameda County records · APN 80A-162-12
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 | Individual Name on File |
|---|---|
| Mailing Address | 15918 WINDSOR DR, CASTRO VALLEY, CA 94578-1416 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Sep 08, 2006 · Amount on Record |
| Deed Sale | Sep 08, 2006 · Amount on Record |
| Deed Document Number | 2006341817 |
| Last Transfer Date | Oct 23, 2020 |
| Transfer Doc | 0000301718 |
| 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 | $640,706 (+0.9%) Land $194,312 Building $453,394 | ||
| 2025 | $8,366.00 (+3.82%) Homeowner's exemption | $635,007 (+4.04%) Land $190,502 Building $444,505 | |
| 2023 | $8,058.00 Homeowner's exemption | $610,354 Land $183,106 Building $427,248 | $641,520 |
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.
Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 522 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| AT&T | Fiber | 5,000 / 5,000 |
| Xfinity | Cable | 2,000 / 250 |
May also be available at this address: Verizon, Unwired, Etheric Communications, LLC., AT&T, T-Mobile USA. Availability varies by address; speeds are provider-advertised maximums, not measured.
5G and 4G LTE
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