Alameda County property record for 20502 Stanton Ave, Castro Valley, CA 94546
| Property Type | Commercial |
|---|---|
| Details | 3,900 sqft · built 1950 |
| Lot Size | 0.386 acres (16,831 sqft) |
| Owner | Company Name on File |
| Last Sale | $250,000 (Mar 2012) |
| Tax Bill | $5,293 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 84A-181-18 |
| Primary APN | 84A-181-18 |
|---|---|
| Alternative APN |
|
| Stories | 1 Story |
|---|---|
| Building Area | 3,900 sqft Total Area |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1950 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Fire Resistance | Wood or Wood & Steel Frame |
| Lot Area | 16,831 sqft (0.386 acres) |
| View / Lot | Average |
| Street Address | 20502 STANTON AVE |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546 |
| Property Category | Commercial |
| Property Type | Commercial > Retail |
| Legal Description | LOT: 00018 BLK: AR: 084A PAGE: 0181 |
| Legal Subdivision | STANTON 01 |
| Legal Tract | 1 |
| Legal Lot Number | 2 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 430900 |
20502 Stanton Ave, a commercial property, is owned by a company that bought it in March 2012.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 1414 EASTSHORE DR, ALAMEDA, CA 94501-3116 |
| Owner Type | Company |
| Vesting | Company |
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 | Name on Deed |
|---|---|
| Last Sale | Mar 15, 2012 · Amount on File |
| Deed Sale | Mar 15, 2012 · Amount on File |
| Deed Document Number | 201292175 |
| Prior Transfer Date | Nov 2, 1993 |
| Prior Transfer Doc | 0000099175 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 20502 Stanton Ave was $5,293.
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 |
|---|---|---|
| 2026 | $320,275 (+2%) Land $256,220 Building $64,055 | |
| 2025 | $5,293.00 | $313,997 Land $251,198 Building $62,799 |
| 2023 | $5,042.00 | $301,807 Land $241,446 Building $60,361 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 20502 Stanton Ave in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
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 |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 4 in force |
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.
The area around 20502 Stanton Ave has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within 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 709 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 · DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 2,000 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
May also be available: GeoLinks, T-Mobile.
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