Alameda County property record for 18357 Joseph Dr, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,588 sqft · built 1954 |
| Lot Size | 0.115 acres (5,050 sqft) |
| Owner | Owner Name on File |
| Last Sale | $505,000 (May 2010) |
| Tax Bill | $8,560 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 84D-1211-24 |
| Primary APN | 84D-1211-24 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,588 sqft Living Area |
| Year Built | Built 1954 |
|---|---|
| Effective Year Built | Effective 1955 |
| Architectural Style | Other |
| Construction Type | Wood |
| Lot Area | 5,050 sqft (0.115 acres) |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 18357 JOSEPH DR |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-2203 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | BLK:1 SUBD:EDEN TOWNSHIP TR#:1236 |
| Legal Subdivision | EDEN TOWNSHIP |
| Legal Tract | 1236 |
| Legal Block | 1 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 2 |
| Census Block | 2007 |
| Census Tract | 430300 |
Source: Alameda County assessment roll, APN 84D-1211-24, as of July 1, 2025 · Last verified October 2025
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Owner Name on File |
|---|---|
| Mailing Address | 6 STARDUST, IRVINE, CA 92603-3748 |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | May 28, 2010 · Amount on Record |
| Deed Sale | May 28, 2010 · Amount on Record |
| Prior Sale | Jul 27, 2012 |
| Deed Document Number | 0000151777 |
| Last Transfer Date | Aug 03, 2012 |
| Transfer Doc | 0000254599 |
| Record Updated | Jun 08, 2026 |
Source: Alameda County assessment roll as of July 1, 2025 · Last verified October 2025
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Unified School District | Castro Valley Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2025 | $8,560.00 (+3.98%) | $651,818 (+4.04%) Land $195,545 Building $456,273 |
| 2023 | $8,232.00 | $626,512 Land $187,953 Building $438,559 |
Source: FEMA National Flood Hazard Layer, Alameda County (06001C), as of May 25, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060014303002, as of September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition, as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 1 in force |
| Wildfire Risk | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | None beyond ember reach |
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.
Source: FCC Broadband Data Collection, 666 locations within half a mile, as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| AT&T Fiber · DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: Etheric Communications, LLC., T-Mobile USA, Unwired.
Source: EPA Safe Drinking Water Information System, water system CA0110005, as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | EAST BAY MUD serves 1,468,000 people |
|---|---|
| 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 as reported to EPA, 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. The full violation and enforcement history is in the system's EPA record.
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