San Bernardino County property record for 4601 E Guasti Rd, Ontario, CA 91761
| Property Type | Light Industrial |
|---|---|
| Details | 57,390 sqft · built 1989 |
| Lot Size | 3.1 acres (135,036 sqft) |
| Owner | Company Name on Record |
| Last Sale | $7,100,000 (Aug 2015) |
| Tax Bill | $88,961 (2025) |
| Deeds & Mortgages | Sep 2021 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 0238-042-18-0000 |
| Primary APN | 0238-042-18-0000 |
|---|
| Building Area | 57,390 sqft Gross Area |
|---|
| Year Built | Built 1989 |
|---|---|
| Effective Year Built | Effective 1989 |
| Construction Type | Masonry / Concrete Block |
| Fire Resistance | Masonry Walls, Wood Interior |
| Lot Area | 135,036 sqft (3.1 acres) |
| Sewer | Municipal |
|---|---|
| Water Source | Commercial |
| Street Address | 4601 E GUASTI RD |
|---|---|
| City | ONTARIO |
| State | CA |
| Zip | 91761-8105 |
| Property Category | Industrial |
| Property Type | Industrial > Light Industrial |
| Legal Description | PARCEL MAP 9500 PARCEL 1 |
| Legal Subdivision | PARCEL MAP NO 9500 |
| Legal Block | 1 |
| Jurisdiction | SAN BERNARDINO CA |
| Township / Civil Division | SAN BERNARDINO |
| Census Block Group | 1 |
| Census Block | 1015 |
| Census Tract | 12700 |
Source: San Bernardino County records, as of October 16, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 433 N CAMDEN DR, 888, BEVERLY HILLS, CA 90210-4412 |
| Owner Type | Company |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Aug 27, 2015 · Amount on Record |
| Deed Sale | Aug 27, 2015 · Amount on Record |
| Prior Sale | Apr 17, 1996 |
| Deed Document Number | 2015369891 |
| Prior Transfer Date | Dec 21, 1995 |
| Prior Transfer Doc | 0000438494 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | SAN BERNARDINO CA |
| Property Address | 4601 E GUASTI RD, ONTARIO, CA 91761-8105 |
| Transaction Type | Mortgage |
| Record Updated | Oct 1, 2021 |
| Title Company | STEWART TITLE |
| Name | Verified Name |
|---|---|
| Address | 433 N CAMDEN DR 888, 888, BEVERLY HILLS, CA 90210-4412 |
| Document Number | 0000420587 |
|---|---|
| Date | Sep 15, 2021 |
| Instrument | 2021-0420587 |
| Name | NATIONWIDE LIFE INSURANCE COMPANY |
|---|---|
| Type | Insurance Company |
| Address | COLUMBUS, OH 43215 |
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 85 Months |
| Due | Oct 10, 2028 |
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 | Cucamonga Elementary School District (KG - 08) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $8,573,063 (+2%) Land $1,304,072 Building $7,268,991 | |
| 2025 | $88,961.00 (+5.19%) | $8,404,964 (+4.04%) Land $1,278,502 Building $7,126,462 |
| 2023 | $84,571.00 (+1.85%) | $8,078,588 Land $1,228,856 Building $6,849,732 |
| 2022 | $83,031.00 |
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 · 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 | 4 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.
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 23 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| GeoLinks Fixed Wireless | 1,000 / 1,000 |
May also be available: AT&T, Frontier, Inyo Networks, Spectrum, T-Mobile, Ultimate Internet Access, Verizon.
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