Alameda County property record for 20979 Sherman Dr, Castro Valley, CA 94552
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,580 sqft · built 1998 |
| Lot Size | 0.108 acres (4,700 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $720,000 (Jun 2007) |
| Tax Bill | $12,200 (2025) |
| Deeds & Mortgages | Aug 2020 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 85A-6414-127 |
| Primary APN | 85A-6414-127 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,580 sqft Living Area |
| Year Built | Built 1998 |
|---|---|
| Effective Year Built | Effective 1998 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 4,700 sqft (0.108 acres) |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 20979 SHERMAN DR |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94552-5344 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00073 BLK: TR: 5973 |
| Legal Subdivision | TRACT 5973 |
| Legal Tract | 5973 |
| Legal Lot Number | 73 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 4 |
| Census Block | 4008 |
| Census Tract | 430101 |
20979 Sherman Dr is owned and occupied by two individuals who bought it in June 2007.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 20979 SHERMAN DR, CASTRO VALLEY, CA 94552-5344 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
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 | 2 Names on Deed |
|---|---|
| Last Sale | Jun 21, 2007 · Amount on File |
| Deed Sale | Jun 21, 2007 · Amount on File |
| Prior Sale | Sep 17, 1998 · Amount on File |
| Deed Document Number | 2007231947 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 20979 SHERMAN DR, CASTRO VALLEY, CA 94552-5344 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | FIDELITY TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 20979 SHERMAN DR, CASTRO VALLEY, CA 94552-5344 |
| Document Number | 0000216999 |
|---|---|
| Date | Aug 31, 2020 |
| Instrument | 2020216999 |
| Name | CMG MORTGAGE INC |
|---|---|
| Type | Mortgage Company |
| Address | SAN RAMON, CA 94583 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 181 Months |
| Due | Sep 1, 2035 |
The 2025 property tax bill for 20979 Sherman Dr was $12,200 with a homeowner's exemption.
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 | $979,562 (+1.28%) Land $295,157 Building $691,405 | ||
| 2025 | $12,200.00 Homeowner's exemption | $967,220 Land $289,370 Building $677,850 | |
| 2023 | $11,801.00 | $927,121 Land $278,136 Building $648,985 | $1,080,810 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 20979 Sherman Dr in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective May 25, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Wildfire risk around 20979 Sherman Dr is high, ranking above 81% of the US, with a 0.8% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | High above 81% of the US · above 60% of California |
|---|---|
| Wildfire Likelihood | 0.8% annual chance |
| Exposure | Direct burnable vegetation |
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 496 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| AT&T DSL | 100 / 20 |
May also be available: Unwired.
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