San Bernardino County property record for 2139 E 4th St, Spc 121, Ontario, CA 91764
| Property Type | Mobile Home |
|---|---|
| Details | 3 bd · 2 ba · 1,344 sqft · built 1978 |
| Lot Size | 0.031 acres (1,344 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $132 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 0210-092-01-6121 |
| Primary APN | 0210-092-01-6121 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,344 sqft Living Area |
| 1st Floor Area | 1,344 sqft |
| Year Built | Built 1978 |
|---|---|
| Effective Year Built | Effective 1978 |
| Architectural Style | Modular |
| Roof Material | Metal |
| Lot Area | 1,344 sqft (0.031 acres) |
| Patio Area | 500 sqft |
| Cooling System | Refrigeration |
|---|---|
| Heating System | Floor/Wall Furnace |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 2139 E 4TH ST, 121 |
|---|---|
| City | ONTARIO |
| State | CA |
| Zip | 91764-2684 |
| Property Category | Residential |
| Property Type | Residential > Prefabricated > Mobile Home |
| Legal Description | 78 MADISON SN#A4073H97MCA/B4073H97MCA |
| Legal Block | 3 |
| Jurisdiction | SAN BERNARDINO CA |
| Township / Civil Division | ONTARIO |
| Census Block Group | 3 |
| Census Block | 3004 |
| Census Tract | 1312 |
2139 E 4th St, Spc 121 is owned and occupied by an individual.
Source: San Bernardino County records, as of July 14, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 2139 E 4TH ST, 121, ONTARIO, CA 91764-2684 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Sole Owner |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 2139 E 4th St, Spc 121 was $132 with a homeowner's exemption.
Source: San Bernardino County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | San Bernardino County |
| Municipality | Ontario City |
| Secondary School District | Chaffey Joint Union High School District (09 - 12) |
| Elementary School District | Cucamonga Elementary School District (KG - 08) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $19,665 (-) Building $19,665 | |
| 2025 | $132.00 Homeowner's exemption | $19,665 Building $19,665 |
| 2023 | $131.00 (-0.76%) Homeowner's exemption | $19,665 Building $19,665 |
| 2022 | $132.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 2139 E 4th St, Spc 121 in Zone X, an area of moderate flood risk.
Source: FEMA National Flood Hazard Layer, effective October 12, 2026
| FEMA Flood Zone | Zone X moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| 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 2139 E 4th St, Spc 121 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 | CUCAMONGA VALLEY WATER DISTRICT serves 213,375 people · EPA ID CA3610018 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Feb 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 711 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Frontier Fiber | 7,000 / 7,000 |
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks.
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