Alameda County property record for 3223 Hertlein Pl, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 1,960 sqft · built 1995 |
| Lot Size | 0.195 acres (8,511 sqft) |
| Owner | Trust Name on File |
| Last Sale | $70,000 (Jul 1994) |
| Tax Bill | $5,529 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 84B-510-32 |
| Primary APN | 84B-510-32 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 1,960 sqft Living Area |
| Year Built | Built 1995 |
|---|---|
| Effective Year Built | Effective 1995 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 8,511 sqft (0.195 acres) |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 3223 HERTLEIN PL |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-2900 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00008 BLK: TR: 5100 |
| Legal Tract | 5100 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 4 |
| Census Block | 4000 |
| Census Tract | 430600 |
3223 Hertlein Pl is owner-occupied and held in a trust since July 1994.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 3223 HERTLEIN PL, CASTRO VALLEY, CA 94546-2900 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jul 19, 1994 · Amount on File |
| Deed Sale | Jul 19, 1994 · Amount on File |
| Deed Document Number | 1994255037 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 3223 Hertlein Pl was $5,529 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 | $402,967 (+0.26%) Land $62,620 Building $347,347 | ||
| 2025 | $5,529.00 Homeowner's exemption | $401,929 Land $61,392 Building $340,537 | |
| 2023 | $5,298.00 Homeowner's exemption | $386,324 Land $59,009 Building $327,315 | $416,250 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 3223 Hertlein Pl in Zone X, an area of minimal flood risk.
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.
Wildfire risk around 3223 Hertlein Pl is low, with a 0.01% annual chance of wildfire.
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 769 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 · DSL · Fixed Wireless in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks, Unwired, Verizon.
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