Alameda County property record for 18475 Joseph Dr, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,144 sqft · built 1952 |
| Lot Size | 0.144 acres (6,283 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $175,000 (Jul 1995) |
| Tax Bill | $4,217 (2025) |
| Deeds & Mortgages | Jul 2018 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 84D-1211-4 |
| Primary APN | 84D-1211-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,144 sqft Living Area |
| Year Built | Built 1952 |
|---|---|
| Effective Year Built | Effective 1952 |
| Architectural Style | Custom Design |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Material | Composition Shingle |
| Lot Area | 6,283 sqft (0.144 acres) |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 18475 JOSEPH DR |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-2205 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1CSURV |
| Legal Description | LOT: 00001 BLK: 000A TR: 1144 |
| Legal Tract | 1144 |
| Legal Block | A |
| Legal Lot Number | 1 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 2 |
| Census Block | 2007 |
| Census Tract | 430300 |
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 | Individual Name on Record |
|---|---|
| Mailing Address | 18475 JOSEPH DR, CASTRO VALLEY, CA 94546-2205 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jul 3, 1995 · Amount on Record |
| Deed Sale | Jul 3, 1995 · Amount on Record |
| Deed Document Number | 1995145693 |
| Last Transfer Date | Sep 6, 2018 |
| Transfer Doc | 0000174085 |
| Record Updated | Sep 20, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Jul 24, 2018 |
| Property Address | 18475 JOSEPH DR, CASTRO VALLEY, CA 94546-2205 |
| Document Number | 0000144725 |
| Instrument Date | Jul 18, 2018 |
| Instrument | 144725 |
| Transaction Type | Transfer |
| Record Updated | Aug 7, 2018 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 18475 JOSEPH DR CASTRO VALLEY CA 945462205, CASTRO VALLEY, CA 94546-2205 |
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 | $289,515 (-0.41%) Land $88,954 Building $207,561 | ||
| 2025 | $4,217.00 (+4.25%) Homeowner's exemption | $290,702 (+4.04%) Land $87,210 Building $203,492 | |
| 2023 | $4,045.00 | $279,414 Land $83,824 Building $195,590 | $982,080 |
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 · 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 |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 1 in force |
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: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| 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 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 724 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 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: Etheric Networks, GeoLinks, T-Mobile.
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