Alameda County property record for 4875 Porter St, Fremont, CA 94538
| Property Type | Mobile Home |
|---|---|
| Details | 660 sqft · built 2022 |
| Owner | Trust Name on File |
| Tax Bill | $1,132 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 525-9009-7 |
| Primary APN | 525-9009-7 |
|---|---|
| Alternative APN |
|
| Building Area | 660 sqft Living Area |
|---|
| Year Built | Built 2022 |
|---|---|
| Effective Year Built | Effective 2022 |
| Architectural Style | Mobile Home |
| Street Address | 4875 PORTER ST |
|---|---|
| City | FREMONT |
| State | CA |
| Zip | 94538-2573 |
| Property Category | Residential |
| Property Type | Residential > Prefabricated > Mobile Home |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | FREMONT |
| Census Block Group | 4 |
| Census Block | 4006 |
| Census Tract | 442400 |
4875 Porter St, a mobile home, is owner-occupied and held in a trust.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 4875 PORTER ST, FREMONT, CA 94538-2573 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Living 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 |
|---|---|
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 4875 Porter St was $1,132.
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Municipality | Fremont City |
| Unified School District | Fremont Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $97,205 (+2%) | ||
| 2025 | $1,132.00 | $95,300 Building $95,300 | |
| 2023 | $170,640 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 4875 Porter St in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective May 25, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
The area around 4875 Porter St has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land 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 805 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 1,000 / 75 |
| Sail Internet Fixed Wireless | 800 / 160 |
| Tekify Fiber & Wireless Fixed Wireless | 600 / 130 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks.
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