421 E Ralston St, Ontario, CA 91761 Property Records

San Bernardino County property record for 421 E Ralston St, Ontario, CA 91761

Property Summary

Property Type	Single Family Home
Details	2 bd · 1 ba · 929 sqft · built 1952
Lot Size	0.142 acres (6,200 sqft)
Owner	Individual Name on Record
Last Sale	$545,000 (Apr 2023)
Tax Bill	$6,230 (2025)
Deeds & Mortgages	Apr 2023 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`1049-513-20-0000`

Property Details

APN / Parcel Number

Primary APN	`1049-513-20-0000`

Interior

Bedrooms	2 Beds
Full Baths	1 Bath
Total Rooms	4 Rooms
Stories	1 Story
Building Area	929 sqft Living Area
1st Floor Area	929 sqft
Family Room	Family Room

Exterior

Year Built	Built 1952
Effective Year Built	Effective 1952
Architectural Style	Conventional
Construction Type	Frame
Roof Material	Built-Up Asphalt
Lot Area	6,200 sqft (0.142 acres)
Lot Dimensions	155 ft deep x 40 ft wide
Porch	Patio/Porch
Porch Area	405 sqft
Patio Area	405 sqft

Utilities, Heating & Cooling

Cooling System	None
Heating System	Floor/Wall Furnace
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	421 E RALSTON ST
City	ONTARIO
State	CA
Zip	91761-3334
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	HASTINGS AND HEYDENS SUB LOT 30 BLK 147
Legal Subdivision	HASTINGS & HEYDENS SUBDIVISION
Legal Block	147
Legal Lot Number	30
Jurisdiction	SAN BERNARDINO CA
Township / Civil Division	ONTARIO
Census Block Group	3
Census Block	3008
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	Individual Name on Record
Mailing Address	15563 KLAMATH ST, LA PUENTE, CA 91744-2031
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Sole Owner

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Apr 19, 2023 · Amount on Record
Deed Sale	Apr 19, 2023 · Amount on Record
Deed Document Number	202393278
Prior Transfer Date	Jan 9, 1996
Prior Transfer Doc	0000013342
Record Updated	Sep 20, 2026

April 2023: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN BERNARDINO CA
Recording Date	Apr 19, 2023
Property Address	421 E RALSTON ST, ONTARIO, CA 91761-3334
Document Number	0000093278
Map Reference	MB 18 PG 55
Instrument Date	Mar 9, 2023
Instrument	2023-0093278
Transaction Type	Transfer
Record Updated	May 3, 2023
Title Company	FIRST AMERICAN 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
Address	15563 KLAMATH ST, LA PUENTE, CA 91744-2031

Mortgage

Document Number	0000093279
Date	Apr 19, 2023
Instrument	2023-0093279

Lender

Name	ROYAL PACIFIC FUNDING CORP
Type	Lending Institution

Agreement

Type	FHA Mortgage
Amount	Amount Recorded
Term	361 Months
Due	May 1, 2053

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		$578,358 (+2%) Land $202,425 Building $375,933
2025	$6,230.00 (+8.25%) Homeowner's exemption	$567,018 (+6.98%) Land $198,456 Building $368,562
2023	$5,755.00 (+2,183.73%) Homeowner's exemption	$530,000 Land $185,000 Building $345,000
2022	$252.00

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 618 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
T-Mobile Fixed Wireless	100 / 20
AT&T Fixed Wireless	100 / 20

May also be available: GeoLinks, Verizon.

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