San Bernardino County property record for 531 E Deerfield St, Ontario, CA 91761
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3.5 ba · 2,532 sqft · built 2000 |
| Lot Size | 0.177 acres (7,706 sqft) |
| Owner | Individual Name on File |
| Last Sale | $370,000 (Jul 2012) |
| Tax Bill | $5,084 (2025) |
| Flood Zone | Zone D (undetermined) |
| APN | 1051-531-26-0000 |
| Primary APN | 1051-531-26-0000 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 2,532 sqft Living Area |
| Gross Area | 3,113 sqft |
| 1st Floor Area | 1,338 sqft |
| 2nd Floor Area | 1,194 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 2000 |
|---|---|
| Effective Year Built | Effective 2000 |
| Architectural Style | Modern |
| Construction Type | Frame |
| Roof Material | Tile |
| Lot Area | 7,706 sqft (0.177 acres) |
| Garage Type | Attached |
| Garage Area | 581 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Patio/Porch |
| Porch Area | 110 sqft |
| Patio Area | 110 sqft |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 531 E DEERFIELD ST |
|---|---|
| City | ONTARIO |
| State | CA |
| Zip | 91761-8730 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | TRACT 15925 LOT 18 BOOK 274 PAGE 81 |
| Legal Tract | 15925 |
| Legal Block | 3 |
| Legal Lot Number | 18 |
| Jurisdiction | SAN BERNARDINO CA |
| Township / Civil Division | ONTARIO |
| Census Block Group | 3 |
| Census Block | 3003 |
| Census Tract | 1804 |
Source: San Bernardino County assessment roll, as of July 14, 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 File |
|---|---|
| Mailing Address | 531 E DEERFIELD ST, ONTARIO, CA 91761-8730 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Sole Owner |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Jul 20, 2012 · Amount on Record |
| Deed Sale | Jul 20, 2012 · Amount on Record |
| Prior Sale | Dec 14, 1999 · Amount on Record |
| Deed Document Number | 2012290852 |
| Prior Transfer Date | May 5, 2003 |
| Prior Transfer Doc | 0000305447 |
| Record Updated | Sep 20, 2026 |
Source: San Bernardino County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | San Bernardino County |
| Municipality | Ontario City |
| Unified School District | Chino Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $464,742 (+2%) Land $162,659 Building $302,083 | |
| 2025 | $5,084.00 (+5.65%) | $455,630 (+4.04%) Land $159,470 Building $296,160 |
| 2023 | $4,812.00 (+0.61%) | $437,937 Land $153,277 Building $284,660 |
| 2022 | $4,783.00 |
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 D undetermined · not studied |
|---|---|
| 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 | Low lower than 98% of the US · lower than 98.4% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond ember reach |
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 438 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 |
| Starlink Satellite | 280 / 30 |
May also be available: AT&T, California Internet, T-Mobile USA.
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