Alameda County property record for 20879 Wilbeam Ave, Castro Valley, CA 94546
| Property Type | Multi-Family Dwellings |
|---|---|
| Details | 20 bd · 20 ba · 21,190 sqft · built 1959 |
| Lot Size | 0.915 acres (39,840 sqft) |
| Owner | Company Name on File |
| Last Sale | $6,500,000 (Aug 2005) |
| Tax Bill | $71,133 (2025) |
| Deeds & Mortgages | May 2020 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 84A-40-24-3 |
| Primary APN | 84A-40-24-3 |
|---|---|
| Alternative APN |
|
| Bedrooms | 20 Beds |
|---|---|
| Full Baths | 20 Baths |
| Total Rooms | 80 Rooms |
| Units | 27 Units |
| Stories | 2 Stories |
| Building Area | 21,190 sqft Living Area |
| Year Built | Built 1959 |
|---|---|
| Effective Year Built | Effective 1960 |
| Construction Type | Wood |
| Lot Area | 39,840 sqft (0.915 acres) |
| Garage Type | Carport |
| Carport | Carport |
| Street Address | 20879 WILBEAM AVE |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-5856 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Multi-Family Dwellings |
| Legal Description | LOT: 00003 BLK: 0024 AR: 084A PAGE: 0040 ;LOT: 00004 BLK: 0025 AR: 084A PAGE: 0040 |
| Legal Subdivision | CASTRO VLY GARDENS |
| Legal Block | A |
| Legal Lot Number | 2&4 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 2 |
| Census Block | 2000 |
| Census Tract | 431000 |
Source: Alameda County records · APN 84A-40-24-3
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 | Company Name on File |
|---|---|
| Mailing Address | 9995 TESLA RD, LIVERMORE, CA 94550-9763 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Aug 05, 2005 · Amount on Record |
| Deed Sale | Aug 05, 2005 · Amount on Record |
| Deed Document Number | 2005334294 |
| Prior Transfer Date | Jul 21, 2005 |
| Prior Transfer Doc | 0000334292 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 20879 WILBEAM AVE, CASTRO VALLEY, CA 94546-5856 |
| Transaction Type | Mortgage |
| Record Updated | Jul 19, 2022 |
| Title Company | FIRST AMERICAN TITLE |
| Name | Verified Name |
|---|
| Document Number | 0000121585 |
|---|---|
| Date | May 27, 2020 |
| Instrument | 2020121585 |
| Name | RIVER CITY BANK |
|---|---|
| Type | Bank |
| Address | SACRAMENTO, CA 95833 |
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount Recorded |
Source: Alameda County records · Assessment roll updated August 5, 2026 · Last verified August 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Unified School District | Castro Valley Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $4,496,954 (+1.99%) Land $1,568,002 Building $2,918,017 | |
| 2025 | $71,133.00 (+5.71%) | $4,409,022 (+4.3%) Land $1,537,267 Building $2,860,820 |
| 2023 | $67,292.00 | $4,227,341 Land $1,477,586 Building $2,749,755 |
Source: FEMA National Flood Hazard Layer as of May 25, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 10 policies |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 10 in force |
| Nearby Flood Claims | 2 (2023–2025) |
| Most Recent Claim | Dec 2025 · rainfall accumulation |
| Wildfire Risk | Not rated no burnable land within 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 as of December 31, 2025 · Last verified October 2026
| 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 |
| Etheric Communications, LLC. Fixed Wireless | 250 / 100 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
May also be available: California Internet, Unwired.
Based on FCC filings for 499 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | EAST BAY MUD serves 1,468,000 people |
|---|---|
| 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 as reported to EPA, 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. The full violation and enforcement history is in the system's EPA record.
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