Alameda County property record for 21079 Ashfield Ave, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,314 sqft · built 1956 |
| Lot Size | 0.122 acres (5,300 sqft) |
| Owner | Trust Name on File |
| Last Sale | $212,500 (Dec 1998) |
| Tax Bill | $4,800 (2025) |
| Deeds & Mortgages | Mar 2019 Transfer Mar 2019 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 84A-40-52 |
| Primary APN | 84A-40-52 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,314 sqft Living Area |
| Year Built | Built 1956 |
|---|---|
| Effective Year Built | Effective 1957 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 5,300 sqft (0.122 acres) |
| Street Address | 21079 ASHFIELD AVE |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-5803 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00002 BLK: 000A TR: 1604 |
| Legal Tract | 1604 |
| Legal Block | A |
| Legal Lot Number | 2 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 2 |
| Census Block | 2000 |
| Census Tract | 431000 |
21079 Ashfield Ave is held in a trust since February 2019.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 3149 ALEXIS PL, CASTRO VALLEY, CA 94546-1940 |
| Owner Type | Company |
| Vesting | Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Mar 27, 2019 | Correction Deed NOT AVAILABLE |
| Mar 27, 2019 | Quit Claim Deed, Transfer NOT AVAILABLE |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Dec 16, 1998 · Amount on File |
| Deed Sale | Dec 16, 1998 · Amount on File |
| Deed Document Number | 1998440922 |
| Last Transfer Date | Feb 11, 2019 |
| Transfer Doc | 0000054460 |
| Record Updated | Oct 29, 2026 |
| Document Type | Correction Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Mar 27, 2019 |
| Property Address | 21079 ASHFIELD AVE, CASTRO VALLEY, CA 94546-5803 |
| Document Number | 0000054459 |
| Instrument Date | Mar 24, 2019 |
| Instrument | 54459 |
| Record Updated | Apr 15, 2019 |
| Title Company | NOT AVAILABLE |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 3149 ALEXIS PL CASTRO VALLEY CA 945461940, CASTRO VALLEY, CA 94546-1940 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Mar 27, 2019 |
| Property Address | 21079 ASHFIELD AVE, CASTRO VALLEY, CA 94546-5803 |
| Document Number | 0000054460 |
| Instrument Date | Feb 11, 2019 |
| Instrument | 54460 |
| Transaction Type | Transfer |
| Record Updated | Apr 15, 2019 |
| Title Company | NOT AVAILABLE |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 3149 ALEXIS PL CASTRO VALLEY CA 945461940, CASTRO VALLEY, CA 94546-1940 |
The 2025 property tax bill for 21079 Ashfield Ave was $4,800.
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 | $339,780 (+2%) Land $102,014 Building $237,766 | ||
| 2025 | $4,800.00 | $333,119 Land $100,014 Building $233,105 | |
| 2023 | $4,596.00 | $320,186 Land $96,131 Building $224,055 | $838,080 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 21079 Ashfield Ave in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 2023.
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 |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File 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 |
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 21079 Ashfield 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 499 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, DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks, Unwired.
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