San Bernardino County property record for 851 S Mountain Ave, Ontario, CA 91762
| Property Type | Condominium |
|---|---|
| Details | 2 bd · 1.5 ba · 1,332 sqft · built 1979 |
| Lot Size | 0.095 acres (4,125 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $245,000 (Aug 2016) |
| Tax Bill | $4,210 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 1011-382-27-0000 |
| Primary APN | 1011-382-27-0000 |
|---|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 4 Rooms |
| Stories | 2 Stories |
| Building Area | 1,332 sqft Living Area |
| Gross Area | 1,736 sqft |
| 1st Floor Area | 610 sqft |
| 2nd Floor Area | 722 sqft |
| Family Room | Family Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1979 |
|---|---|
| Effective Year Built | Effective 1979 |
| Architectural Style | Modern |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Material | Wood Shingle |
| Lot Area | 4,125 sqft (0.095 acres) |
| Garage Type | Attached |
| Garage Area | 404 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 851 S MOUNTAIN AVE |
|---|---|
| City | ONTARIO |
| State | CA |
| Zip | 91762-4814 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Condominium |
| Legal Description | TRACT 10200 UNIT 16 AND INT IN COMMON AREA AS PER RECORD AND PURSUANT TO SEC 2188.5 OF REVENUE AND TAXATION CODE |
| Legal Subdivision | COTTAGE PARK TOWNHOMES |
| Legal Tract | 10200 |
| Legal Block | 3 |
| Legal Lot Number | 1 |
| Jurisdiction | SAN BERNARDINO CA |
| Township / Civil Division | ONTARIO |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 1706 |
Source: San Bernardino County records, as of August 12, 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 Record |
|---|---|
| Mailing Address | 851 S MOUNTAIN AVE, ONTARIO, CA 91762-4814 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Sole Owner |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Aug 31, 2016 · Amount on Record |
| Deed Sale | Aug 31, 2016 · Amount on Record |
| Prior Sale | Mar 8, 2011 · Amount on Record |
| Deed Document Number | 2016354028 |
| Prior Transfer Date | Apr 6, 2006 |
| Prior Transfer Doc | 0000268155 |
| 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 |
| 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 | $290,030 (+2%) Land $101,510 Building $188,520 | |
| 2025 | $4,210.00 (+3.87%) Homeowner's exemption | $284,344 (+4.04%) Land $99,520 Building $184,824 |
| 2023 | $4,053.00 (+41.56%) Homeowner's exemption | $273,303 Land $95,656 Building $177,647 |
| 2022 | $2,863.00 |
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 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.
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 828 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: Frontier, GeoLinks, T-Mobile.
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