Alameda County property record for 4491 Pomponi St, Union City, CA 94587
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,797 sqft · built 1994 |
| Lot Size | 0.197 acres (8,579 sqft) |
| Owner | Trust Name on File |
| Last Sale | $365,000 (Sep 1994) |
| Tax Bill | $8,594 (2025) |
| Deeds & Mortgages | Mar 2018 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 482-41-29 |
| Primary APN | 482-41-29 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 2,797 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1994 |
|---|---|
| Effective Year Built | Effective 1994 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 8,579 sqft (0.197 acres) |
| Parking Spaces | 3 Parking Spaces |
| Heating System | Forced Air with A/C |
|---|
| Street Address | 4491 POMPONI ST |
|---|---|
| City | UNION CITY |
| State | CA |
| Zip | 94587-2588 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00024 BLK: TR: 6070 |
| Legal Tract | 6070 |
| Legal Lot Number | 24 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | FREMONT |
| Census Block Group | 1 |
| Census Block | 1001 |
| Census Tract | 440332 |
4491 Pomponi St is owner-occupied and held in a trust since March 2018.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 4491 POMPONI ST, UNION CITY, CA 94587-2588 |
| Occupancy | Owner Occupied |
| 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 29, 1994 · Amount on File |
| Deed Sale | Sep 29, 1994 · Amount on File |
| Deed Document Number | 1994318791 |
| Last Transfer Date | Mar 27, 2018 |
| Transfer Doc | 0000063918 |
| Record Updated | Sep 20, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Mar 29, 2018 |
| Property Address | 4491 POMPONI ST, UNION CITY, CA 94587-2588 |
| Document Number | 0000063918 |
| Instrument Date | Mar 27, 2018 |
| Instrument | 63918 |
| Transaction Type | Transfer |
| Record Updated | Apr 11, 2018 |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Trust |
| Address | 4491 POMPONI ST UNION CITY CA 945872588, UNION CITY, CA 94587-2588 |
The 2025 property tax bill for 4491 Pomponi St was $8,594 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 | $618,318 (+0.86%) Land $188,452 Building $436,866 | ||
| 2025 | $8,594.00 Homeowner's exemption | $613,057 Land $184,757 Building $428,300 | |
| 2023 | $8,671.00 Homeowner's exemption | $589,256 Land $177,584 Building $411,672 | $1,591,740 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 4491 Pomponi St in Zone X, an area of minimal flood risk.
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 |
| Nearby Flood Policies | 1 in force |
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 4491 Pomponi St 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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