Alameda County property record for 17331 Mayflower Dr, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 1,504 sqft · built 1958 |
| Lot Size | 0.188 acres (8,192 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $1,500,000 (Jul 2025) |
| Tax Bill | $2,573 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 84D-1102-29 |
| Primary APN | 84D-1102-29 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 1,504 sqft Living Area |
| Year Built | Built 1958 |
|---|---|
| Effective Year Built | Effective 1959 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 8,192 sqft (0.188 acres) |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 17331 MAYFLOWER DR |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-1132 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00008 BLK: 0003 TR: 1763 |
| Legal Subdivision | 38 57 |
| Legal Tract | 1763 |
| Legal Block | 3 |
| Legal Lot Number | 8 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 430400 |
17331 Mayflower Dr is owner-occupied and held in a trust since July 2025.
Source: Alameda County records, as of August 26, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 17331 MAYFLOWER DR, CASTRO VALLEY, CA 94546-1132 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Family 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 | 2 Names on Deed |
|---|---|
| Last Sale | Jul 14, 2025 · Amount on File |
| Deed Sale | Jul 14, 2025 · Amount on File |
| Deed Document Number | 202588961 |
| Prior Transfer Date | Jan 18, 2006 |
| Prior Transfer Doc | 0000434508 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 17331 Mayflower Dr was $2,573.
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 | $1,493,000 (+885.85%) Land $450,000 Building $1,050,000 | ||
| 2025 | $2,573.00 Homeowner's exemption | $151,443 Land $46,093 Building $105,350 | |
| 2023 | $2,440.00 Homeowner's exemption | $145,562 Land $44,303 Building $101,259 | $1,116,090 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
FEMA maps place 17331 Mayflower 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.
Wildfire risk around 17331 Mayflower Dr is moderate, ranking above 57% of the US, with a 0.2% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 57% of the US · lower than 66% of California |
|---|---|
| Wildfire Likelihood | 0.2% 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 312 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Etheric Networks, GeoLinks, Sonic Telecom, Unwired.
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