San Bernardino County property record for 632 E Ralston St, Ontario, CA 91761
| Property Type | Duplex |
|---|---|
| Details | 3 bd · 2 ba · 1,454 sqft · built 1954 |
| Lot Size | 0.14 acres (6,080 sqft) |
| Owner | Individual Name on File |
| Last Sale | $210,000 (Aug 2011) |
| Tax Bill | $2,911 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1049-503-07-0000 |
| Primary APN | 1049-503-07-0000 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,454 sqft Living Area |
| 1st Floor Area | 1,454 sqft |
| Year Built | Built 1954 |
|---|---|
| Effective Year Built | Effective 1954 |
| Architectural Style | Conventional |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Material | Built-Up Asphalt |
| Lot Area | 6,080 sqft (0.14 acres) |
| Lot Dimensions | 152 ft deep x 40 ft wide |
| Garage Type | Detached |
| Garage Area | 400 sqft |
| Parking Spaces | 2 Parking Spaces |
| Total Buildings | 2 Buildings |
| Cooling System | None |
|---|---|
| Heating System | Floor/Wall Furnace |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 632 E RALSTON ST |
|---|---|
| City | ONTARIO |
| State | CA |
| Zip | 91761-3449 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Local Zoning Code | R1 |
| Legal Description | TRACT 2441 LOT 39 |
| Legal Tract | 2441 |
| Legal Block | 3 |
| Legal Lot Number | 39 |
| Jurisdiction | SAN BERNARDINO CA |
| Township / Civil Division | ONTARIO |
| Census Block Group | 3 |
| Census Block | 3012 |
| Census Tract | 1813 |
632 E Ralston St, a duplex, is owned by an individual who bought it in August 2011.
Source: San Bernardino County records, as of July 14, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 632 E RALSTON ST, A, ONTARIO, CA 91761-3449 |
| 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.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Aug 29, 2011 · Amount on File |
| Deed Sale | Aug 29, 2011 · Amount on File |
| Prior Sale | Mar 18, 2011 · Amount on File |
| Deed Document Number | 2011362369 |
| Prior Transfer Date | Mar 16, 2011 |
| Prior Transfer Doc | 0000111897 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 632 E Ralston St was $2,911.
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 | $269,045 (+2%) Land $89,681 Building $179,364 | |
| 2025 | $2,911.00 | $263,770 Land $87,923 Building $175,847 |
| 2023 | $2,765.00 (+1.36%) | $253,528 Land $84,509 Building $169,019 |
| 2022 | $2,728.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 632 E Ralston St in Zone X, an area of minimal flood risk.
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.
The area around 632 E Ralston 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 618 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 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: GeoLinks, Verizon.
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