San Bernardino County property record for 512 W 4th St, Ontario, CA 91762
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 3 ba · 2,101 sqft · built 1946 |
| Lot Size | 0.227 acres (9,886 sqft) |
| Owner | Individual Name on File |
| Last Sale | $235,000 (Sep 2011) |
| Tax Bill | $3,178 (2025) |
| Deeds & Mortgages | Jul 2026 Transfer Dec 2022 Mortgage + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 1047-581-03-0000 |
| Primary APN | 1047-581-03-0000 |
|---|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 2,101 sqft Living Area |
| 1st Floor Area | 2,101 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1946 |
|---|---|
| Effective Year Built | Effective 1946 |
| Architectural Style | Conventional |
| Construction Type | Frame |
| Lot Area | 9,886 sqft (0.227 acres) |
| Porch | Patio/Porch |
| Porch Area | 181 sqft |
| Patio Area | 181 sqft |
| Cooling System | None |
|---|---|
| Heating System | Floor/Wall Furnace |
| Sewer | Connected |
| Water Source | Commercial |
| Street Address | 512 W 4TH ST |
|---|---|
| City | ONTARIO |
| State | CA |
| Zip | 91764 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | ONTAR1O COLONY LANDS W 69.5 FT E 175.99 FT S 142.25 FT LOT 796 |
| Legal Subdivision | ONTARIO |
| Legal Block | 1 |
| Legal Lot Number | 796 |
| Jurisdiction | SAN BERNARDINO CA |
| Township / Civil Division | ONTARIO |
| Census Block Group | 1 |
| Census Block | 1001 |
| Census Tract | 1103 |
512 W 4th St is owned and occupied by an individual who bought it in September 2011.
Source: San Bernardino County records, as of August 5, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 512 W 4TH ST, ONTARIO, CA 91762-1942 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Sole Owner |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Jul 23, 2026 | Quit Claim Deed, Transfer NONE LISTED ON DOCUMENT |
| Dec 20, 2022 | Deed of Trust, Mortgage · Conventional Mortgage NATIONSTAR MORTGAGE LLC |
| Apr 16, 2020 | Deed of Trust, Mortgage · Line of Credit US BANK NA |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Sep 1, 2011 · Amount on File |
| Deed Sale | Sep 1, 2011 · Amount on File |
| Prior Sale | May 23, 2011 · Amount on File |
| Deed Document Number | 2011368460 |
| Prior Transfer Date | May 17, 2011 |
| Prior Transfer Doc | 0000206873 |
| Record Updated | Oct 29, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | SAN BERNARDINO CA |
| Recording Date | Jul 23, 2026 |
| Property Address | 512 W 4TH ST, ONTARIO, CA 91762-1942 |
| Document Number | 0000189434 |
| Instrument Date | Jul 22, 2026 |
| Instrument | 2026189434 |
| Transaction Type | Transfer |
| Record Updated | Aug 31, 2026 |
| Title Company | NONE LISTED ON DOCUMENT |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Full Amount Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Sole Owner |
| Address | 512 W 4TH ST, ONTARIO, CA 91762-1942 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN BERNARDINO CA |
| Property Address | 512 W 4TH ST, ONTARIO, CA 91762-1942 |
| Transaction Type | Mortgage |
| Record Updated | Jan 2, 2023 |
| Name | Verified Name |
|---|---|
| Address | 512 W 4TH ST, ONTARIO, CA 91762-1942 |
| Document Number | 0000403184 |
|---|---|
| Date | Dec 20, 2022 |
| Instrument | 2022-0403184 |
| Name | NATIONSTAR MORTGAGE LLC |
|---|---|
| Type | Mortgage Company |
| Address | COPPELL, TX 75019 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Jan 1, 2053 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN BERNARDINO CA |
| Property Address | 512 W 4TH ST, ONTARIO, CA 91762-1942 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Name | Verified Name |
|---|
| Document Number | 0000131018 |
|---|---|
| Date | Apr 16, 2020 |
| Instrument | 2020-0131018 |
| Name | US BANK NA |
|---|---|
| Type | Bank |
| Address | CINCINNATI, OH 45202 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Apr 10, 2050 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
The 2025 property tax bill for 512 W 4th St was $3,178 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 | Ontario-Montclair School District (KG - 08) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $301,078 (+2%) Land $108,900 Building $192,178 | |
| 2025 | $3,178.00 Homeowner's exemption | $295,175 Land $106,765 Building $188,410 |
| 2023 | $3,015.00 (+1.38%) Homeowner's exemption | $283,714 Land $102,620 Building $181,094 |
| 2022 | $2,974.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 512 W 4th St in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective October 12, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 1 in force |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
The area around 512 W 4th 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 | 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 487 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 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: GeoLinks.
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