Alameda County property record for 21031 Sherman Dr, Castro Valley, CA 94552
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.5 ba · 2,082 sqft · built 1998 |
| Lot Size | 0.094 acres (4,082 sqft) |
| Owner | Trust Name on File |
| Last Sale | $615,000 (May 2003) |
| Tax Bill | $11,379 (2025) |
| Deeds & Mortgages | Feb 2024 Transfer Feb 2021 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 85A-6414-114-1 |
| Primary APN | 85A-6414-114-1 |
|---|---|
| Alternative APNs |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 2,082 sqft Living Area |
| Year Built | Built 1998 |
|---|---|
| Effective Year Built | Effective 1998 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 4,082 sqft (0.094 acres) |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 21031 SHERMAN DR |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94552-5347 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 0000A BLK: TR: 5973 ;LOT: 00060 BLK: TR: 5973 |
| Legal Subdivision | TRACT 5973 |
| Legal Tract | 5973 |
| Legal Lot Number | 60 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 4 |
| Census Block | 4008 |
| Census Tract | 430101 |
21031 Sherman Dr is held in a trust since February 2024.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 21031 SHERMAN DR, CASTRO VALLEY, CA 94552-5347 |
| 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 |
|---|---|
| Feb 29, 2024 | Intrafamily Transfer, Transfer |
| Feb 18, 2021 | Intrafamily Transfer, Transfer · Conventional Mortgage CMG MORTGAGE INC |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 21, 2003 · Amount on File |
| Deed Sale | May 21, 2003 · Amount on File |
| Prior Sale | Jan 8, 1999 · Amount on File |
| Deed Document Number | 2003295337 |
| Last Transfer Date | Feb 27, 2024 |
| Transfer Doc | 0000030547 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Feb 29, 2024 |
| Property Address | 21031 SHERMAN DR, CASTRO VALLEY, CA 94552-5347 |
| Document Number | 0000030547 |
| Map Reference | MB 193 PH 94-98 |
| Instrument Date | Feb 27, 2024 |
| Instrument | 2024030547 |
| Transaction Type | Transfer |
| Record Updated | Apr 4, 2024 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 21031 SHERMAN DR, CASTRO VALLEY, CA 94552-5347 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Feb 18, 2021 |
| Property Address | 21031 SHERMAN DR, CASTRO VALLEY, CA 94552-5347 |
| Document Number | 0000068732 |
| Map Reference | MB 193 PG 94-98 |
| Instrument Date | Feb 9, 2021 |
| Instrument | 2021068732 |
| Transaction Type | Transfer |
| Record Updated | Aug 19, 2021 |
| Title Company | OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 21031 SHERMAN DR, CASTRO VALLEY, CA 94552-5347 |
| Document Number | 0000068733 |
|---|---|
| Date | Feb 18, 2021 |
| Instrument | 2021068733 |
| Name | CMG MORTGAGE INC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 181 Months |
| Due | Mar 1, 2036 |
The 2025 property tax bill for 21031 Sherman Dr was $11,379.
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 | $908,453 (+2%) Land $272,536 Building $635,917 | ||
| 2025 | $11,379.00 | $890,642 Land $267,192 Building $623,450 | |
| 2023 | $10,957.00 | $856,067 Land $256,820 Building $599,247 | $1,262,520 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 21031 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 21031 Sherman Dr is high, ranking above 77% of the US, with a 0.5% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | High above 77% of the US · above 53% of California |
|---|---|
| Wildfire Likelihood | 0.5% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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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