Alameda County property record for 4298 Marsten Ave, Union City, CA 94587
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 2 ba · 2,386 sqft · built 1896 |
| Lot Size | 0.448 acres (19,500 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $830,000 (Mar 2006) |
| Tax Bill | $15,250 (2025) |
| Deeds & Mortgages | Apr 2021 Mortgage May 2019 Mortgage |
| Flood Zone | Zone AE (high risk) |
| APN | 482-30-25-1 |
| Primary APN | 482-30-25-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 2,386 sqft Living Area |
| Year Built | Built 1896 |
|---|---|
| Effective Year Built | Effective 1906 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 19,500 sqft (0.448 acres) |
| Garage Type | Carport |
| Carport | Carport |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 4298 MARSTEN AVE |
|---|---|
| City | UNION CITY |
| State | CA |
| Zip | 94587-2504 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00001 BLK: 0025 AR: 0482 PAGE: 0030 ;LOT: 00002 BLK: 0025 AR: 0482 PAGE: 0030 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | FREMONT |
| Census Block Group | 1 |
| Census Block | 1003 |
| Census Tract | 440331 |
Source: Alameda County records, as of August 5, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 32107 TREFRY CT, UNION CITY, CA 94587-2920 |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Date | Document |
|---|---|
| Apr 9, 2021 | Deed of Trust, Mortgage · Conventional Mortgage LOANDEPOT.COM LLC |
| May 1, 2019 | Deed of Trust, Mortgage · Conventional Mortgage JPMORGAN CHASE BANK NA |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Mar 23, 2006 · Amount on Record |
| Deed Sale | Mar 23, 2006 · Amount on Record |
| Prior Sale | May 25, 2001 · Amount on Record |
| Deed Document Number | 2006108537 |
| Prior Transfer Date | Mar 15, 2006 |
| Prior Transfer Doc | 0000108536 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 4298 MARSTEN AVE, UNION CITY, CA 94587-2504 |
| Transaction Type | Mortgage |
| Record Updated | Apr 28, 2021 |
| Title Company | NORTH AMERICAN TITLE |
| Name | Verified Name |
|---|---|
| Address | 4298 MARSTEN AVE, UNION CITY, CA 94587-2504 |
| Document Number | 0000142650 |
|---|---|
| Date | Apr 9, 2021 |
| Instrument | 2021142650 |
| Name | LOANDEPOT.COM LLC |
|---|---|
| Type | Mortgage Company |
| Address | FOOTHILL RANCH, CA 92610 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 156 Months |
| Due | Apr 1, 2034 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 4298 MARSTEN AVE, UNION CITY, CA 94587-2504 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | AMROCK TITLE CALIFORNIA INC |
| Name | Verified Name |
|---|
| Document Number | 0000079502 |
|---|---|
| Date | May 1, 2019 |
| Instrument | 2019079502 |
| Name | JPMORGAN CHASE BANK NA |
|---|---|
| Type | Bank |
| Address | COLUMBUS, OH 43240 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 180 Months |
| Due | May 1, 2034 |
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Municipality | Union City |
| Unified School District | New Haven Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $1,156,837 (+2%) Land $1,087,148 Building $69,689 | ||
| 2025 | $15,250.00 (+2.2%) | $1,134,161 (+4.04%) Land $1,065,838 Building $68,323 | |
| 2023 | $14,921.00 | $1,090,129 Land $1,024,459 Building $65,670 | $1,209,690 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
Source: FEMA National Flood Hazard Layer, effective May 25, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone AE high risk |
|---|---|
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | No |
| Base Flood Elevation | 10.0 ft |
| Flood Insurance Requirement | Required federally backed loans |
| Flood Insurance Cost | Premium on Record median of 23 individual policies |
| Nearby Flood Policies | 25 units insured incl. 2 condo units |
| Nearby Flood Claims | 1 (1986) |
| Most Recent Claim | Mar 1986 · Severe Storms & 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.
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 | 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 | ALAMEDA COUNTY WATER DISTRICT serves 344,000 people · EPA ID CA0110001 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Nov 2025 |
| 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.
Source: FCC Broadband Data Collection, based on 621 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| RobinsonHSS Fixed Wireless | 1,000 / 1,000 |
| Tekify Fiber & Wireless Fixed Wireless | 570 / 120 |
| Unwired Fixed Wireless | 300 / 25 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
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