San Bernardino County property record for 857 S Mountain Ave, Ontario, CA 91762
| Property Type | Condominium |
|---|---|
| Details | 3 bd · 2.5 ba · 1,408 sqft · built 1979 |
| Lot Size | 0.095 acres (4,125 sqft) |
| Owner | 2 Individuals on Record |
| Last Sale | $168,000 (May 2009) |
| Tax Bill | $2,391 (2025) |
| Deeds & Mortgages | Jun 2022 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 1011-382-30-0000 |
| Primary APN | 1011-382-30-0000 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 5 Rooms |
| Stories | 2 Stories |
| Building Area | 1,408 sqft Living Area |
| Gross Area | 1,843 sqft |
| 1st Floor Area | 550 sqft |
| 2nd Floor Area | 858 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 | 435 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 857 S MOUNTAIN AVE |
|---|---|
| City | ONTARIO |
| State | CA |
| Zip | 91762-4815 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Condominium |
| Legal Description | TRACT 10200 UNIT 19 AND INT IN COMMON AREA AS PER RECORD AND PURSUANT TO SEC 2188.5 OF REVENUE AND TAXATION CODE |
| Legal Subdivision | COTTAGE PARK |
| Legal Tract | 10200 |
| Legal Block | 3 |
| Jurisdiction | SAN BERNARDINO CA |
| Township / Civil Division | ONTARIO |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 1706 |
Source: San Bernardino County assessment roll, 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 | 2 Individuals on Record |
|---|---|
| Mailing Address | 857 S MOUNTAIN AVE, ONTARIO, CA 91762-4815 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 20, 2009 · Amount on Record |
| Deed Sale | May 20, 2009 · Amount on Record |
| Prior Sale | Feb 6, 2003 · Amount on Record |
| Deed Document Number | 2009217713 |
| Last Transfer Date | Jun 13, 2022 |
| Transfer Doc | 0000219314 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | SAN BERNARDINO CA |
| Recording Date | Jun 17, 2022 |
| Property Address | 857 S MOUNTAIN AVE, ONTARIO, CA 91762-4815 |
| Document Number | 0000219314 |
| Map Reference | MB 144 PG 87&88 |
| Instrument Date | Jun 13, 2022 |
| Instrument | 2022-0219314 |
| Transaction Type | Transfer |
| Record Updated | Jun 30, 2022 |
| Title Company | STEWART TITLE, STEWART TITLE GUARANTY CO |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 857 S MOUNTAIN AVE, ONTARIO, CA 91762-4815 |
| Document Number | 0000219315 |
|---|---|
| Date | Jun 17, 2022 |
| Instrument | 2022-0219315 |
| Name | SCHOOLSFIRST FCU |
|---|---|
| Type | Credit Union |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Jul 1, 2052 |
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 | $220,669 (+2%) Land $77,236 Building $143,433 | |
| 2025 | $2,391.00 (+5.24%) | $216,343 (+4.04%) Land $75,722 Building $140,621 |
| 2023 | $2,272.00 (+1.38%) | $207,942 Land $72,781 Building $135,161 |
| 2022 | $2,241.00 |
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.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures