859 S Mountain Ave, Ontario, CA 91762 Property Records

San Bernardino County property record for 859 S Mountain Ave, Ontario, CA 91762

Property Summary

Property Type	Condominium
Details	2 bd · 1.5 ba · 1,332 sqft · built 1979
Lot Size	0.095 acres (4,125 sqft)
Owner	2 Company Names on Record
Last Sale	$475,000 (Sep 2023)
Tax Bill	$5,327 (2025)
Deeds & Mortgages	Mar 2026 Mortgage Sep 2023 Sale & Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`1011-382-31-0000`

Property Details

APN / Parcel Number

Primary APN	`1011-382-31-0000`

Interior

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

Exterior

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

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	859 S MOUNTAIN AVE
City	ONTARIO
State	CA
Zip	91762-4815
Property Category	Residential
Property Type	Residential > Condominium / Townhouse > Condominium
Legal Description	TRACT 10200 UNIT 20 AND INT IN COMMON AREA AS PER RECORD AND PURSUANT TO SEC 2188.5 OF REVENUE AND TAXATION CODE
Legal Subdivision	TRACT NO 10200
Legal Tract	10200
Legal Block	3
Jurisdiction	SAN BERNARDINO CA
Township / Civil Division	ONTARIO
Census Block Group	3
Census Block	3000
Census Tract	1706

Owner

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	2 Company Names on Record
Mailing Address	301 GLENOAKS ST, BREA, CA 92821-2117
Owner Type	Company
Vesting	Trust, Family Trust

Deeds, Mortgages & Sale History

Date	Document
Mar 10, 2026	Deed of Trust, Mortgage · Conventional Mortgage NEW AMERICAN FUNDING
Sep 22, 2023	Grant Deed, Transfer · Conventional Mortgage CASTLE MORTGAGE CORP
Jun 30, 2020	Grant Deed, Transfer · Conventional Mortgage UNITED WHOLESALE MORTGAGE

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Sep 22, 2023 · Amount on Record
Deed Sale	Sep 22, 2023 · Amount on Record
Prior Sale	Jun 30, 2020 · Amount on Record
Deed Document Number	2023235353
Last Transfer Date	May 14, 2024
Transfer Doc	0000125228
Record Updated	Sep 20, 2026

March 2026: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN BERNARDINO CA
Property Address	859 S MOUNTAIN AVE, ONTARIO, CA 91762-4815
Transaction Type	Mortgage
Record Updated	Mar 30, 2026
Title Company	WFG NATIONAL TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	301 GLENOAKS ST, BREA, CA 92821-2117

Mortgage

Document Number	0000062618
Date	Mar 10, 2026
Instrument	2026-0062618

Lender

Name	NEW AMERICAN FUNDING
Type	Lending Institution
Address	SANTA ANA, CA 92707

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Apr 1, 2056

September 2023: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN BERNARDINO CA
Recording Date	Sep 22, 2023
Property Address	859 S MOUNTAIN AVE, ONTARIO, CA 91762-4815
Document Number	0000235353
Map Reference	MB 144 PG 87&88
Instrument Date	Aug 25, 2023
Instrument	2023-0235353
Transaction Type	Transfer
Record Updated	Oct 5, 2023
Title Company	PACIFIC COAST TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	859 S MOUNTAIN AVE, ONTARIO, CA 91762-4815

Mortgage

Document Number	0000235354
Date	Sep 22, 2023
Instrument	2023-0235354

Lender

Name	CASTLE MORTGAGE CORP
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Oct 1, 2053

June 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN BERNARDINO CA
Recording Date	Jun 30, 2020
Property Address	859 S MOUNTAIN AVE, ONTARIO, CA 91762-4815
Document Number	0000217619
Map Reference	MB 144 PG 87&88
Instrument Date	May 26, 2020
Instrument	2020-0217619
Transaction Type	Transfer
Record Updated	Aug 31, 2021
Title Company	LAWYERS TITLE

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	859 S MOUNTAIN AVE, ONTARIO, CA 91762-4815

Mortgage

Document Number	0000217620
Date	Jun 30, 2020
Instrument	2020-0217620

Lender

Name	UNITED WHOLESALE MORTGAGE
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jul 1, 2050

Tax Assessment & Valuation

Source: San Bernardino County assessment roll, as of July 14, 2026

Property Jurisdictions

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)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$494,190 (+2%) Land $171,666 Building $322,524
2025	$5,327.00 (+63.25%)	$484,500 (+61.72%) Land $168,300 Building $316,200
2023	$3,263.00 (+1.34%) Homeowner's exemption	$299,585 Land $104,855 Building $194,730
2022	$3,220.00

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

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.

Wildfire

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.

Drinking Water

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

Violations Reported to EPA

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.

Internet Providers

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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