Alameda County property record for 16640 Hannah Dr, Castro Valley, CA 94578
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.5 ba · 1,670 sqft · built 1946 |
| Lot Size | 0.101 acres (4,400 sqft) |
| Owner | Individual Name on File |
| Last Sale | $235,000 (Oct 2000) |
| Tax Bill | $5,010 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 80A-216-31 |
| Primary APN | 80A-216-31 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 1,670 sqft Living Area |
| Year Built | Built 1946 |
|---|---|
| Effective Year Built | Effective 1946 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 4,400 sqft (0.101 acres) |
| Lot Dimensions | 111 ft deep x 40 ft wide |
| Parking Spaces | 1 Parking Space |
| Street Address | 16640 HANNAH DR |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94578-1528 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00031 BLK: AR: 080A PAGE: 0216 |
| Legal Subdivision | EAST OAKLAND TERRACE |
| Legal Block | F |
| Legal Lot Number | 58 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 2 |
| Census Block | 2009 |
| Census Tract | 430500 |
16640 Hannah Dr is owned and occupied by an individual who acquired it in April 2015.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 16640 HANNAH DR, CASTRO VALLEY, CA 94578-1528 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
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 | Oct 20, 2000 · Amount on File |
| Deed Sale | Oct 20, 2000 · Amount on File |
| Prior Sale | Jun 5, 2000 · Amount on File |
| Deed Document Number | 2000314087 |
| Last Transfer Date | Apr 21, 2015 |
| Transfer Doc | 0000214631 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 16640 Hannah Dr was $5,010 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 | San Lorenzo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $354,161 (+0.02%) Land $108,348 Building $252,813 | ||
| 2025 | $5,010.00 Homeowner's exemption | $354,081 Land $106,224 Building $247,857 | |
| 2023 | $4,819.00 Homeowner's exemption | $340,333 Land $102,100 Building $238,233 | $705,870 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 16640 Hannah Dr 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.
The area around 16640 Hannah Dr has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within 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 796 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 |
May also be available: Etheric Networks, GeoLinks, T-Mobile, Unwired, Verizon.
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