San Bernardino County property record for 4050 Greystone Dr, Ontario, CA 91761
| Property Type | Other |
|---|---|
| Details | 56,705 sqft · built 2007 |
| Lot Size | 3.33 acres (145,490 sqft) |
| Owner | Company Name on Record |
| Last Sale | $85,500,000 (May 2017) |
| Tax Bill | $105,924 (2025) |
| Deeds & Mortgages | May 2017 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 1083-361-16-0000 |
| Primary APN | 1083-361-16-0000 |
|---|---|
| Alternative APN |
|
| Units | 2 Units |
|---|---|
| Stories | 2 Stories |
| Building Area | 56,705 sqft Gross Area |
| Year Built | Built 2007 |
|---|---|
| Effective Year Built | Effective 2007 |
| Construction Type | Masonry / Concrete Block |
| Fire Resistance | Masonry Walls, Wood Interior |
| Lot Area | 145,490 sqft |
| Parking Spaces | 76 Parking Spaces |
| Sewer | Municipal |
|---|---|
| Water Source | Commercial |
| Street Address | 4050 GREYSTONE DR |
|---|---|
| City | ONTARIO |
| State | CA |
| Zip | 91761-3101 |
| Property Category | Other |
| Property Type | Other > Miscellaneous |
| Legal Description | PARCEL MAP 18050 PARCEL 3 BOOK 223 PAGE 27 |
| Legal Subdivision | PARCEL MAP 18050 |
| Legal Block | 1 |
| Jurisdiction | SAN BERNARDINO CA |
| Township / Civil Division | SAN BERNARDINO |
| Census Block Group | 1 |
| Census Block | 1086 |
| Census Tract | 12700 |
Source: San Bernardino County records, 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 | Company Name on Record |
|---|---|
| Mailing Address | 3200 E GUASTI RD, 100, ONTARIO, CA 91761-8661 |
| Owner Type | Company |
| Vesting | Trust, Corporate Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 26, 2017 · Amount on Record |
| Deed Sale | May 26, 2017 · Amount on Record |
| Prior Sale | May 16, 2008 |
| Deed Document Number | 2017217617 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SAN BERNARDINO CA |
| Recording Date | May 26, 2017 |
| Property Address | 4050 GREYSTONE DR, ONTARIO, CA 91761-3101 |
| Document Number | 0000217617 |
| Instrument Date | May 18, 2017 |
| Instrument | 217617 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2017 |
| Title Company | FIRST AMERICAN TITLE, FIRST AMERICAN TITLE INSURANCE |
| Amount | Amount Recorded |
|---|---|
| Tax | $9,405.00 |
| Amount Accuracy | Full Value |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Company |
| Address | 3200 E GUASTI RD #100 ONTARIO CA 917618661, 100, ONTARIO, CA 91761-8661 |
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 | Mountain View Elementary School District (KG - 08) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $10,121,471 (+2%) Land $2,586,597 Building $7,534,874 | |
| 2025 | $105,924.00 (+5.5%) | $9,923,010 (+4.04%) Land $2,535,879 Building $7,387,131 |
| 2023 | $100,398.00 (+1.23%) | $9,537,687 Land $2,437,408 Building $7,100,279 |
| 2022 | $99,179.00 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
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 78 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 / 35 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks, Ultimate Internet Access.
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