641 E Ralston St, Ontario, CA 91761 Property Records

San Bernardino County property record for 641 E Ralston St, Ontario, CA 91761

Property Summary

Property Type	Duplex
Details	4 bd · 4 ba · 2,240 sqft · built 1983
Lot Size	0.178 acres (7,760 sqft)
Owner	2 Individual Names on Record
Last Sale	$140,000 (Aug 1994)
Tax Bill	$2,999 (2025)
Deeds & Mortgages	Oct 2021 Mortgage Jan 2017 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`1049-502-27-0000`

Property Details

APN / Parcel Number

Primary APN	`1049-502-27-0000`

Interior

Bedrooms	4 Beds
Full Baths	4 Baths
Total Rooms	5 Rooms
Units	2 Units
Stories	1 Story
Building Area	2,240 sqft Total Area

Exterior

Year Built	Built 1983
Effective Year Built	Effective 1983
Architectural Style	Duplex Single
Exterior Material	Stucco
Construction Type	Wood
Lot Area	7,760 sqft (0.178 acres)
Lot Dimensions	97 ft deep x 80 ft wide

Utilities, Heating & Cooling

Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	641 E RALSTON ST
City	ONTARIO
State	CA
Zip	91761-3450
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Local Zoning Code	R1
Legal Description	TRACT 2441 LOTS 22 AND 23 (PER LOT LINE ADJUSTMENT RECORDED 8/18/82 #162151)
Legal Subdivision	TRACT NO 2441
Legal Tract	2441
Legal Block	3
Legal Lot Number	22,23
Jurisdiction	SAN BERNARDINO CA
Township / Civil Division	ONTARIO
Census Block Group	3
Census Block	3010
Census Tract	1813

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 Individual Names on Record
Mailing Address	2758 E BLACK HORSE DR, ONTARIO, CA 91761-9195
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
Oct 19, 2021	Deed of Trust, Mortgage · Conventional Mortgage HOMEBRIDGE FINANCIAL SERVICES INC
Jan 5, 2017	Intrafamily Transfer, Transfer · Conventional Mortgage MOTIVE LENDING

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Aug 16, 1994 · Amount on Record
Deed Sale	Aug 16, 1994 · Amount on Record
Deed Document Number	1994346479
Last Transfer Date	Dec 28, 2016
Transfer Doc	0000007067
Record Updated	Sep 20, 2026

October 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN BERNARDINO CA
Property Address	641 E RALSTON ST, ONTARIO, CA 91761-3450
Transaction Type	Mortgage
Record Updated	Nov 1, 2021
Title Company	TICOR TITLE ORANGE COUNTY BR, TICOR TTL ORANGE CNTY BRANCH

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	2758 E BLACK HORSE DR, ONTARIO, CA 91761-9195

Mortgage

Document Number	0000473933
Date	Oct 19, 2021
Instrument	2021-0473933

Lender

Name	HOMEBRIDGE FINANCIAL SERVICES INC
Type	Mortgage Company
Address	ISELIN, NJ 08830

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Nov 1, 2051

January 2017: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	SAN BERNARDINO CA
Recording Date	Jan 5, 2017
Property Address	641 E RALSTON ST, ONTARIO, CA 91761-3450
Document Number	0000007067
Map Reference	MB34 PG79
Instrument Date	Dec 28, 2016
Instrument	2017-0007067
Transaction Type	Transfer
Record Updated	Aug 31, 2021
Title Company	WFG NATL TITLE COMAPNY OF CA

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	2758 E BLACK HORSE DR, ONTARIO, CA 91761-9195

Mortgage

Document Number	0000007068
Date	Jan 5, 2017
Instrument	2017-0007068

Lender

Name	MOTIVE LENDING
Type	Lending Institution

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Jan 1, 2047

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		$277,259 (+2%) Land $86,712 Building $190,547
2025	$2,999.00 (+5.3%)	$271,823 (+4.04%) Land $85,012 Building $186,811
2023	$2,848.00 (+1.32%)	$261,268 Land $81,711 Building $179,557
2022	$2,811.00

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	Low lower than 97% of the US · lower than 97.8% of California
Wildfire Likelihood	Under 0.01% annual chance
Exposure	Direct burnable vegetation

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 240 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 / 1,000
Verizon Fixed Wireless	300 / 20
Starlink Satellite	280 / 30
AT&T Fixed Wireless	100 / 20
T-Mobile Fixed Wireless	100 / 20

May also be available: GeoLinks.

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