Alameda County property record for 17663 Mayflower Dr, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.5 ba · 1,822 sqft · built 1954 |
| Lot Size | 0.126 acres (5,488 sqft) |
| Owner | Trust Name on File |
| Tax Bill | $7,094 (2025) |
| Deeds & Mortgages | Oct 2020 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 84D-1103-34 |
| Primary APN | 84D-1103-34 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 6 Rooms |
| Stories | 2 Stories |
| Building Area | 1,822 sqft Living Area |
| Gross Area | 486 sqft |
| Basement Area | 486 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1954 |
|---|---|
| Effective Year Built | Effective 1969 |
| Architectural Style | L-Shape |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Material | Tar & Gravel |
| Lot Area | 5,488 sqft (0.126 acres) |
| Lot Dimensions | 95 ft deep x 56 ft wide |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 17663 MAYFLOWER DR |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-1136 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00006 BLK: 0001 TR: 1376 |
| Legal Tract | 1376 |
| Legal Block | 1 |
| Legal Lot Number | 6 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 1 |
| Census Block | 1002 |
| Census Tract | 430400 |
17663 Mayflower Dr is owner-occupied and held in a trust since January 2004.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 17663 MAYFLOWER DR, CASTRO VALLEY, CA 94546-1136 |
| 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 Transfer Date | Jan 7, 2004 |
| Transfer Doc | 0000126522 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 17663 MAYFLOWER DR, CASTRO VALLEY, CA 94546-1136 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | SYNRGO |
| Name | Verified Name |
|---|
| Document Number | 0000269684 |
|---|---|
| Date | Oct 13, 2020 |
| Instrument | 2020269684 |
| Name | SRI FCU |
|---|---|
| Type | Credit Union |
| Address | MENLO PARK, CA 94025 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
The 2025 property tax bill for 17663 Mayflower Dr was $7,094 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 | $538,222 (+0.69%) Land $243,946 Building $301,276 | ||
| 2025 | $7,094.00 Homeowner's exemption | $534,533 Land $239,163 Building $295,370 | |
| 2023 | $6,811.00 Homeowner's exemption | $513,778 Land $229,877 Building $283,901 | $1,220,220 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 17663 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 17663 Mayflower Dr is moderate, ranking above 40% of the US, with a 0.07% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 40% of the US · lower than 76% of California |
|---|---|
| Wildfire Likelihood | 0.07% annual chance |
| Exposure | Indirect 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 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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