Alameda County property record for 4200 Mabel Ave, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,010 sqft · built 1950 |
| Lot Size | 0.116 acres (5,035 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $340,000 (Jan 2010) |
| Tax Bill | $5,965 (2025) |
| Deeds & Mortgages | Mar 2021 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 84C-755-13 |
| Primary APN | 84C-755-13 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,010 sqft Living Area |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1950 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 5,035 sqft (0.116 acres) |
| Street Address | 4200 MABEL AVE |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-3547 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00013 BLK: 0001 TR: 1012 |
| Legal Subdivision | TRACT 1012 |
| Legal Tract | 1012 |
| Legal Block | 1 |
| Legal Lot Number | 13 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 1 |
| Census Block | 1001 |
| Census Tract | 430800 |
4200 Mabel Ave is owned and occupied by two individuals who bought it in January 2010.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 4200 MABEL AVE, CASTRO VALLEY, CA 94546-3547 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
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 | Jan 8, 2010 · Amount on File |
| Deed Sale | Jan 8, 2010 · Amount on File |
| Deed Document Number | 20104799 |
| Prior Transfer Date | Dec 4, 2003 |
| Prior Transfer Doc | 0000710412 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 4200 MABEL AVE, CASTRO VALLEY, CA 94546-3547 |
| Transaction Type | Mortgage |
| Record Updated | Apr 21, 2021 |
| Title Company | FIRST AMERICAN TITLE |
| Name | Verified Name |
|---|---|
| Address | 4200 MABEL AVE, CASTRO VALLEY, CA 94546-3547 |
| Document Number | 0000125475 |
|---|---|
| Date | Mar 29, 2021 |
| Instrument | 2021125475 |
| Name | WELLS FARGO BANK NORTHWEST NA |
|---|---|
| Type | Bank |
| Address | SIOUX FALLS, SD 57104 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 240 Months |
| Due | Mar 1, 2041 |
The 2025 property tax bill for 4200 Mabel Ave was $5,965 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 | $440,623 (+0.4%) Land $134,287 Building $313,336 | ||
| 2025 | $5,965.00 Homeowner's exemption | $438,847 Land $131,654 Building $307,193 | |
| 2023 | $5,719.00 Homeowner's exemption | $421,810 Land $126,543 Building $295,267 | $702,360 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 4200 Mabel Ave 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 4200 Mabel Ave 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 704 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 |
| Verizon Fixed Wireless | 300 / 20 |
| Starlink Satellite | 280 / 30 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks.
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