San Bernardino County property record for 730 N Lassen Ave, Ontario, CA 91764
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 1,684 sqft · built 1976 |
| Lot Size | 0.17 acres (7,400 sqft) |
| Owner | Individual Name on File |
| Last Sale | $200,000 (Jun 2003) |
| Tax Bill | $4,083 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 0110-513-07-0000 |
| Primary APN | 0110-513-07-0000 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,684 sqft Living Area |
| Gross Area | 2,121 sqft |
| 1st Floor Area | 1,684 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1976 |
|---|---|
| Effective Year Built | Effective 1976 |
| Architectural Style | Modern |
| Construction Type | Frame |
| Roof Material | Composition Shingle |
| Lot Area | 7,400 sqft (0.17 acres) |
| Lot Dimensions | 100 ft deep x 74 ft wide |
| Garage Type | Attached |
| Garage Area | 437 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Porch |
| Porch Area | 274 sqft |
| Total Buildings | 2 Buildings |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 730 N LASSEN AVE |
|---|---|
| City | ONTARIO |
| State | CA |
| Zip | 91764-3629 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | TRACT 9067 LOT 20 |
| Legal Tract | 9067 |
| Legal Block | 3 |
| Legal Lot Number | 20 |
| Jurisdiction | SAN BERNARDINO CA |
| Township / Civil Division | ONTARIO |
| Census Block Group | 3 |
| Census Block | 3004 |
| Census Tract | 1309 |
730 N Lassen Ave is owned and occupied by an individual who acquired it in January 2010.
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 | 730 N LASSEN AVE, ONTARIO, CA 91764-3629 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jun 19, 2003 · Amount on File |
| Deed Sale | Jun 19, 2003 · Amount on File |
| Deed Document Number | 2003413730 |
| Last Transfer Date | Jan 7, 2010 |
| Transfer Doc | 0000011304 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 730 N Lassen Ave was $4,083.
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 | $378,329 (+2%) Land $103,412 Building $274,917 | |
| 2025 | $4,083.00 | $370,910 Land $101,384 Building $269,526 |
| 2023 | $3,879.00 (+1.36%) | $356,507 Land $97,447 Building $259,060 |
| 2022 | $3,827.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 730 N Lassen Ave 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 730 N Lassen Ave 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 | 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 672 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 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: GeoLinks, T-Mobile.
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