Alameda County property record for 21977 Redwood Rd, Castro Valley, CA 94546
| Property Type | Commercial Office |
|---|---|
| Details | 1 ba · 1,200 sqft · built 1948 |
| Lot Size | 0.115 acres (5,000 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $650,000 (Aug 2023) |
| Tax Bill | $9,645 (2025) |
| Deeds & Mortgages | May 2026 Sale Aug 2023 Sale & Mortgage |
| Flood Zone | Zone X (moderate risk) |
| APN | 415-90-77 |
| Primary APN | 415-90-77 |
|---|---|
| Alternative APN |
|
| Full Baths | 1 Bath |
|---|---|
| Stories | 1 Story |
| Building Area | 1,200 sqft Total Area |
| Year Built | Built 1948 |
|---|---|
| Effective Year Built | Effective 1958 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Fire Resistance | Wood or Wood & Steel Frame |
| Lot Area | 5,000 sqft (0.115 acres) |
| Street Address | 21977 REDWOOD RD |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-6437 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Legal Description | LOT: 00010 BLK: 0006 TR: 0803 |
| Legal Subdivision | AS SHOWN UPON THE MAP OF TRACT 803 |
| Legal Tract | 0803 |
| Legal Block | 6 |
| Legal Lot Number | 10 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 1 |
| Census Block | 1003 |
| Census Tract | 431200 |
21977 Redwood Rd, a commercial property, is held in a trust since August 2023.
Source: Alameda County records, as of September 22, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 21977 REDWOOD RD, CASTRO VALLEY, CA 94546-6437 |
| Owner Type | Company |
| Vesting | Trust, Family 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 |
|---|---|
| May 5, 2026 | Deed, Transfer NONE LISTED ON DOCUMENT |
| Aug 9, 2023 | Grant Deed, Transfer · Commercial Mortgage FIRST CITIZENS BANK & TRUST CO |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Aug 9, 2023 · Amount on File |
| Deed Sale | Aug 9, 2023 · Amount on File |
| Deed Document Number | 202390140 |
| Prior Transfer Date | Dec 22, 2016 |
| Prior Transfer Doc | 0000336238 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | May 5, 2026 |
| Property Address | 21977 REDWOOD RD, CASTRO VALLEY, CA 94546-6437 |
| Document Number | 0000059180 |
| Instrument Date | Oct 29, 2025 |
| Instrument | 202659180 |
| Transaction Type | Transfer |
| Record Updated | Jul 12, 2026 |
| Title Company | NONE LISTED ON DOCUMENT |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Trust |
| Address | 21977 REDWOOD RD, CASTRO VALLEY, CA 94546-6437 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Aug 9, 2023 |
| Property Address | 21977 REDWOOD RD, CASTRO VALLEY, CA 94546-6437 |
| Document Number | 0000090140 |
| Map Reference | MB 20 PG 55&56 |
| Instrument Date | Aug 7, 2023 |
| Instrument | 2023090140 |
| Transaction Type | Transfer |
| Record Updated | Sep 5, 2023 |
| Title Company | OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $715.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 21977 REDWOOD RD, CASTRO VALLEY, CA 94546-6437 |
| Document Number | 0000090141 |
|---|---|
| Date | Aug 9, 2023 |
| Instrument | 2023090141 |
| Name | FIRST CITIZENS BANK & TRUST CO |
|---|---|
| Type | Bank |
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount on Record |
The 2025 property tax bill for 21977 Redwood Rd was $9,645.
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Unified School District | Hayward Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $676,260 (+2%) Land $234,090 Building $442,170 | |
| 2025 | $9,645.00 | $663,000 Land $229,500 Building $433,500 |
| 2023 | $2,840.00 (+3.42%) | $101,481 (+2%) Land $54,848 Building $46,633 |
| 2022 | $2,746.00 | $99,491 Land $53,773 Building $45,718 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
FEMA maps place 21977 Redwood Rd in Zone X, an area of moderate 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 moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 15 policies |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 15 in force |
| Nearby Flood Claims | 1 (1996) |
| Most Recent Claim | Dec 1996 · 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 21977 Redwood Rd 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 744 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 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks.
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