Alameda County property record for 21484 Orange Ave, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,200 sqft · built 1948 |
| Lot Size | 0.117 acres (5,100 sqft) |
| Owner | Trust Name on File |
| Last Sale | $585,000 (Sep 2016) |
| Tax Bill | $9,053 (2025) |
| Deeds & Mortgages | Mar 2022 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 415-120-22 |
| Primary APN | 415-120-22 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,200 sqft Living Area |
| Year Built | Built 1948 |
|---|---|
| Effective Year Built | Effective 1975 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 5,100 sqft (0.117 acres) |
| Parking Spaces | 1 Parking Space |
| Street Address | 21484 ORANGE AVE |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-6336 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00008 BLK: 0001 TR: 0803 |
| Legal Tract | 0803 |
| Legal Block | 1 |
| Legal Lot Number | 8 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 1 |
| Census Block | 1003 |
| Census Tract | 431200 |
21484 Orange Ave is held in a trust since September 2016.
Source: Alameda County records, as of August 5, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 21484 ORANGE AVE, CASTRO VALLEY, CA 94546-6336 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Sep 27, 2016 · Amount on File |
| Deed Sale | Sep 27, 2016 · Amount on File |
| Prior Sale | Oct 23, 2015 · Amount on File |
| Deed Document Number | 2016245968 |
| Prior Transfer Date | Feb 7, 1996 |
| Prior Transfer Doc | 0000128351 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Mar 1, 2022 |
| Property Address | 21484 ORANGE AVE, CASTRO VALLEY, CA 94546-6336 |
| Document Number | 0000044696 |
| Map Reference | MB 20 PG 55&56 |
| Instrument Date | Feb 24, 2022 |
| Instrument | 2022044696 |
| Transaction Type | Transfer |
| Record Updated | Mar 17, 2022 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 5964 SKYFARM DR, CASTRO VALLEY, CA 94552-1637 |
The 2025 property tax bill for 21484 Orange Ave was $9,053.
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 | Assessed Market Value |
|---|---|---|---|
| 2026 | $692,504 (+2%) Land $207,751 Building $484,753 | ||
| 2025 | $9,053.00 | $678,927 Land $203,678 Building $475,249 | |
| 2023 | $8,672.00 | $652,567 Land $195,770 Building $456,797 | $802,530 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 21484 Orange Ave in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1996.
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 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 21484 Orange 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 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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