San Bernardino County property record for 421 S Plum Ave, Ontario, CA 91761
| Property Type | Vacant Land |
|---|---|
| Details | 1 bd · 1 ba · 600 sqft · built 1914 |
| Lot Size | 0.169 acres (7,340 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $48,000 (Nov 2012) |
| Tax Bill | $802 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1049-245-01-0000 |
| Primary APN | 1049-245-01-0000 |
|---|
| 1st Floor Area | 360 sqft |
|---|
| Lot Area | 7,340 sqft (0.169 acres) |
|---|---|
| Lot Depth | 150 ft Depth |
| Sewer | Municipal |
|---|---|
| Water Source | Commercial |
| Street Address | 421 S PLUM AVE |
|---|---|
| City | ONTARIO |
| State | CA |
| Zip | 91761-1648 |
| Property Category | Vacant Land |
| Property Type | Vacant Land > Uncategorized |
| Legal Description | SOUTH SIDE TRACT LOTS 11 AND 12 BLK 78 EX ST |
| Legal Subdivision | SOUTH SIDE |
| Legal Tract | L |
| Legal Block | 78 |
| Legal Lot Number | 11,12 |
| Jurisdiction | SAN BERNARDINO CA |
| Township / Civil Division | ONTARIO |
| Census Block Group | 1 |
| Census Block | 1020 |
| Census Tract | 1600 |
Source: San Bernardino County records, as of September 3, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on Record |
|---|---|
| Mailing Address | PO BOX 78275, LOS ANGELES, CA 90016-0275 |
| Owner Type | Individual |
| Vesting | Sole Owner |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Nov 9, 2012 · Amount on Record |
| Deed Sale | Nov 9, 2012 · Amount on Record |
| Prior Sale | Jul 21, 2010 · Amount on Record |
| Deed Document Number | 2012466936 |
| Prior Transfer Date | Jul 15, 2010 |
| Prior Transfer Doc | 0000291934 |
| Record Updated | Oct 29, 2026 |
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 | Ontario-Montclair School District (KG - 08) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $60,291 (+2%) Land $60,291 | |
| 2025 | $802.00 (+27.5%) | $59,109 (+4.04%) Land $59,109 |
| 2023 | $629.00 (+1.29%) | $56,814 Land $56,814 |
| 2022 | $621.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer, effective October 12, 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.
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 | ONTARIO MUNICIPAL UTILITIES COMPANY serves 185,010 people · EPA ID CA3610034 |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Jul 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 300 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Frontier Fiber | 7,000 / 7,000 |
| Spectrum Cable | 1,000 / 1,000 |
| Starlink Satellite | 280 / 30 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: GeoLinks, Verizon.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures