Alameda County property record for 5439 Greenridge Rd, Castro Valley, CA 94552
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 1,834 sqft · built 1960 |
| Lot Size | 0.384 acres (16,704 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $615,000 (Aug 2012) |
| Tax Bill | $9,723 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 85-1602-2 |
| Primary APN | 85-1602-2 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,834 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1960 |
|---|---|
| Effective Year Built | Effective 1961 |
| Architectural Style | H-Shape |
| Construction Type | Wood |
| Roof Material | Tar & Gravel |
| Lot Area | 16,704 sqft (0.384 acres) |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Radiant |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 5439 GREENRIDGE RD |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94552-2621 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00017 BLK: 0003 TR: 2084 |
| Legal Tract | 2084 |
| Legal Block | 3 |
| Legal Lot Number | 17 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 1 |
| Census Block | 1016 |
| Census Tract | 430102 |
5439 Greenridge Rd is owned and occupied by two individuals who bought it in August 2012.
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 | 2 Individual Names on File |
|---|---|
| Mailing Address | 5439 GREENRIDGE RD, CASTRO VALLEY, CA 94552-2621 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Aug 22, 2012 · Amount on File |
| Deed Sale | Aug 22, 2012 · Amount on File |
| Prior Sale | Jun 13, 2012 · Amount on File |
| Deed Document Number | 2012275029 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 5439 Greenridge Rd was $9,723 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 | $765,440 (+1.08%) Land $231,732 Building $540,708 | ||
| 2025 | $9,723.00 Homeowner's exemption | $757,298 Land $227,189 Building $530,109 | |
| 2023 | $9,353.00 Homeowner's exemption | $727,894 Land $218,368 Building $509,526 | $1,507,770 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 5439 Greenridge Rd 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 5439 Greenridge Rd is moderate, ranking above 58% of the US, with a 0.2% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 58% of the US · lower than 65% of California |
|---|---|
| Wildfire Likelihood | 0.2% 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 252 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Etheric Networks, Unwired.
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