Alameda County property record for 4259 Mabel Ave, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 1,308 sqft · built 1950 |
| Lot Size | 0.125 acres (5,460 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $520,000 (May 2014) |
| Tax Bill | $8,308 (2025) |
| Deeds & Mortgages | Dec 2025 Reverse Mortgage Jan 2026 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 84C-755-25 |
| Primary APN | 84C-755-25 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,308 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1950 |
| Architectural Style | L-Shape |
| Exterior Material | Stucco |
| Construction Type | Wood |
| Roof Material | Composition Shingle |
| Lot Area | 5,460 sqft (0.125 acres) |
| Cooling System | Window A/C |
|---|---|
| Heating System | Floor/Wall Furnace |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 4259 MABEL AVE |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-3556 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | LOT: 00025 BLK: 0001 TR: 1012 |
| Legal Subdivision | TR 1012 |
| Legal Tract | 1012 |
| Legal Block | 1 |
| Legal Lot Number | 25 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 1 |
| Census Block | 1001 |
| Census Tract | 430800 |
4259 Mabel Ave is owner-occupied and held in a trust since May 2014.
Source: Alameda County records, as of August 26, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 4259 MABEL AVE, CASTRO VALLEY, CA 94546-3556 |
| 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.
| Date | Document |
|---|---|
| Dec 26, 2025 | Intrafamily Transfer, Transfer · Reverse Mortgage SMARTFI HOME LOANS LLC |
| Jan 27, 2026 | Intrafamily Transfer, Transfer |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 22, 2014 · Amount on File |
| Deed Sale | May 22, 2014 · Amount on File |
| Prior Sale | Mar 1, 1994 · Amount on File |
| Deed Document Number | 2014126293 |
| Prior Transfer Date | Nov 22, 2011 |
| Prior Transfer Doc | 0000343821 |
| Record Updated | Oct 29, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Dec 26, 2025 |
| Property Address | 4259 MABEL AVE, CASTRO VALLEY, CA 94546-3556 |
| Document Number | 0000165528 |
| Map Reference | MB 30 PG 69 |
| Instrument Date | Dec 17, 2025 |
| Instrument | 2025165528 |
| Transaction Type | Transfer |
| Record Updated | Feb 5, 2026 |
| Title Company | CHICAGO TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 4259 MABEL AVE, CASTRO VALLEY, CA 94546-3556 |
| Document Number | 0000165529 |
|---|---|
| Date | Dec 26, 2025 |
| Instrument | 2025165529 |
| Name | SMARTFI HOME LOANS LLC |
|---|---|
| Type | Mortgage Company |
| Type | Reverse Mortgage |
|---|---|
| Amount | Amount on Record |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Jan 27, 2026 |
| Property Address | 4259 MABEL AVE, CASTRO VALLEY, CA 94546-3556 |
| Document Number | 0000009731 |
| Map Reference | MB 30 PG 69 |
| Instrument Date | Dec 9, 2025 |
| Instrument | 2026009731 |
| Transaction Type | Transfer |
| Record Updated | Feb 26, 2026 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 4259 MABEL AVE, CASTRO VALLEY, CA 94546-3556 |
The 2025 property tax bill for 4259 Mabel Ave was $8,308.
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 | $643,165 (+0.9%) Land $195,049 Building $455,116 | ||
| 2025 | $8,308.00 Homeowner's exemption | $637,420 Land $191,226 Building $446,194 | |
| 2023 | $7,985.00 Homeowner's exemption | $612,674 Land $183,802 Building $428,872 | $845,190 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 4259 Mabel Ave in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
Source: FEMA National Flood Hazard Layer, effective May 25, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| 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 4259 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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