Alameda County property record for 4088 Marsten Ave, Union City, CA 94587
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,347 sqft · built 1954 |
| Lot Size | 0.135 acres (5,880 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $27,272 (Apr 1997) |
| Tax Bill | $1,750 (2025) |
| Flood Zone | Zone AE (high risk) |
| APN | 482-30-39-1 |
| Primary APN | 482-30-39-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,347 sqft Living Area |
| Year Built | Built 1954 |
|---|---|
| Effective Year Built | Effective 1954 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 5,880 sqft (0.135 acres) |
| Street Address | 4088 MARSTEN AVE |
|---|---|
| City | UNION CITY |
| State | CA |
| Zip | 94587-2505 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00001 BLK: 0039 AR: 0482 PAGE: 0030 ;LOT: 0000C BLK: TR: 6071 |
| Legal Tract | 6071 |
| Legal Lot Number | C |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | FREMONT |
| Census Block Group | 1 |
| Census Block | 1006 |
| Census Tract | 440331 |
4088 Marsten Ave is owned and occupied by two individuals who bought it in April 1997.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 4088 MARSTEN AVE, UNION CITY, CA 94587-2505 |
| 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 | Apr 18, 1997 · Amount on File |
| Deed Sale | Apr 18, 1997 · Amount on File |
| Deed Document Number | 1997100259 |
| Prior Transfer Date | Jul 3, 1996 |
| Prior Transfer Doc | 0000298894 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 4088 Marsten Ave was $1,750 with a homeowner's exemption.
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 | $66,007 (-7.78%) Land $28,187 Building $44,820 | ||
| 2025 | $1,750.00 Homeowner's exemption | $71,575 Land $27,634 Building $43,941 | |
| 2023 | $2,247.00 Homeowner's exemption | $68,796 Land $26,561 Building $42,235 | $1,022,400 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 4088 Marsten Ave in Zone AE, a high-risk flood area; flood insurance is required for federally backed loans.
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 File 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.
Wildfire risk around 4088 Marsten 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 | 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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