Alameda County property record for 5918 Greenridge Rd, Castro Valley, CA 94552
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 2,230 sqft · built 1963 |
| Lot Size | 0.234 acres (10,176 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $650,000 (Apr 2010) |
| Tax Bill | $10,784 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 85-1605-19-1 |
| Primary APN | 85-1605-19-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 2,230 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1963 |
|---|---|
| Effective Year Built | Effective 1964 |
| Architectural Style | H-Shape |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Lot Area | 10,176 sqft (0.234 acres) |
| Heating System | Radiant |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 5918 GREENRIDGE RD |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94552-1818 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | LOT: 00014 BLK: 000C TR: 2166 ;LOT: 00019 BLK: 000C TR: 2166 |
| Legal Tract | 2166 |
| Legal Block | C |
| Legal Lot Number | 19 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 1 |
| Census Block | 1009 |
| Census Tract | 430102 |
Source: Alameda County records, as of August 5, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 5918 GREENRIDGE RD, CASTRO VALLEY, CA 94552-1818 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Apr 23, 2010 · Amount on Record |
| Deed Sale | Apr 23, 2010 · Amount on Record |
| Prior Sale | Apr 5, 1994 · Amount on Record |
| Deed Document Number | 2010111437 |
| Prior Transfer Date | May 29, 1996 |
| Prior Transfer Doc | 0000139707 |
| Record Updated | Oct 29, 2026 |
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 | $857,240 (+1.17%) Land $256,725 Building $607,515 | ||
| 2025 | $10,784.00 (+4.85%) Homeowner's exemption | $847,297 (+5.07%) Land $251,692 Building $595,605 | |
| 2023 | $10,285.00 Homeowner's exemption | $806,402 Land $241,920 Building $564,482 | $1,526,940 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | High above 71% of the US · above 46% of California |
|---|---|
| Wildfire Likelihood | 0.3% 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 389 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 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Unwired.
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