Alameda County property record for 3833 Mabel Ave, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 638 sqft · built 1947 |
| Lot Size | 0.152 acres (6,625 sqft) |
| Owner | Trust Name on File |
| Last Sale | $138,000 (Sep 1996) |
| Tax Bill | $3,521 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 84B-590-1-3 |
| Primary APN | 84B-590-1-3 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 4 Rooms |
| Stories | 1 Story |
| Building Area | 638 sqft Living Area |
| Year Built | Built 1947 |
|---|---|
| Effective Year Built | Effective 1947 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 6,625 sqft (0.152 acres) |
| Parking Spaces | 1 Parking Space |
| Street Address | 3833 MABEL AVE |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-3401 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00003 BLK: 0001 AR: 084B PAGE: 0590 |
| Legal Subdivision | CASTRO VALLEY |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 2 |
| Census Block | 2010 |
| Census Tract | 430700 |
3833 Mabel Ave is held in a trust since November 2016.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 3833 MABEL AVE, CASTRO VALLEY, CA 94546-3401 |
| 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 | Sep 27, 1996 · Amount on File |
| Deed Sale | Sep 27, 1996 · Amount on File |
| Deed Document Number | 1996248603 |
| Last Transfer Date | Nov 5, 2016 |
| Transfer Doc | 0000332924 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 3833 Mabel Ave was $3,521.
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 | $229,240 (+2%) Land $68,772 Building $160,468 | ||
| 2025 | $3,521.00 | $224,744 Land $67,423 Building $157,321 | |
| 2023 | $3,359.00 | $216,018 Land $64,805 Building $151,213 | $633,150 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 3833 Mabel Ave in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1998.
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 | 5 in force |
| Nearby Flood Claims | 1 (1998) |
| Most Recent Claim | Feb 1998 · Severe Winter Storms And Flooding |
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 3833 Mabel Ave is low, with less than 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 96% of the US · lower than 97.4% of California |
|---|---|
| Wildfire Likelihood | Under 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.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures