21022 Cornerstone Dr, Walnut, CA 91789 Property Records

Los Angeles County property record for 21022 Cornerstone Dr, Walnut, CA 91789

Property Summary

Property Type	Condominium
Details	4 bd · 3 ba · 1,830 sqft · built 2018
Owner	2 Individual Names on Record
Last Sale	$839,000 (Nov 2021)
Tax Bill	$11,027 (2025)
Deeds & Mortgages	Aug 2023 Line of Credit Nov 2021 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`8720-047-085`

Property Details

APN / Parcel Number

Primary APN	`8720-047-085`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Building Area	1,830 sqft Living Area

Exterior

Year Built	Built 2018
Effective Year Built	Effective 2018
Architectural Style	Condo/Apartment
Construction Type	Wood

Utilities, Heating & Cooling

Cooling System	HVAC
Heating System	Central

Location & Zoning

Street Address	21022 CORNERSTONE DR
City	WALNUT
State	CA
Zip	91789-2571
Property Category	Residential
Property Type	Residential > Condominium / Townhouse > Condominium
Local Zoning Code	WAC3*
Legal Description	TR=73294 LOT 43 PH 2 CONDO UNIT 44 (AIRSPACE AND 1/9 INT IN COMMON AREA)
Legal Subdivision	GALLERY AT CORNERSTONE
Legal Tract	73294
Legal Block	2
Legal Lot Number	43
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	2
Census Block	2011
Census Tract	403402

Owner

Source: Los Angeles County records, as of May 21, 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	19629 MULBERRY DR, WALNUT, CA 91789-5358
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
Aug 10, 2023	Deed of Trust, Mortgage · Line of Credit ROYAL BUSINESS BANK
Nov 12, 2021	Grant Deed, Transfer · Conventional Mortgage JJST CORPORATION

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Nov 12, 2021 · Amount on Record
Deed Sale	Nov 12, 2021 · Amount on Record
Prior Sale	Jun 12, 2017 · Amount on Record
Deed Document Number	20211682273
Record Updated	Sep 20, 2026

August 2023: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	21022 CORNERSTONE DR, WALNUT, CA 91789-2571
Transaction Type	Mortgage
Record Updated	Aug 18, 2023
Title Company	CHICAGO TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	19629 MULBERRY DR, WALNUT, CA 91789-5358

Mortgage

Document Number	0000529167
Date	Aug 10, 2023
Instrument	23-0529167

Lender

Name	ROYAL BUSINESS BANK
Type	Bank
Address	LOS ANGELES, CA 90017

Agreement

Type	Line of Credit
Amount	Amount Recorded

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

November 2021: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Nov 12, 2021
Property Address	21022 CORNERSTONE DR, WALNUT, CA 91789-2571
Document Number	0001682273
Map Reference	MB 1390 PG 37-44
Instrument Date	Oct 28, 2021
Instrument	21-1682273
Transaction Type	Transfer
Record Updated	Nov 24, 2021
Title Company	STEWART 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	19629 MULBERRY DR, WALNUT, CA 91789-5358

Mortgage

Document Number	0001682274
Date	Nov 12, 2021
Instrument	21-1682274

Lender

Name	JJST CORPORATION
Type	Non-Lending Institution

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	181 Months
Due	Dec 1, 2036

Tax Assessment & Valuation

Source: Los Angeles County assessment roll, as of May 21, 2026

Property Jurisdictions

Type	Name
State	California
County	Los Angeles County
Municipality	Walnut City
Unified School District	Walnut Valley Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2025	$11,027.00 (+7.63%)	$890,351 (+4.04%) Land $556,921 Building $333,430
2023	$10,245.00 (+2.12%)	$855,780 Land $535,296 Building $320,484
2022	$10,032.00

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

Flood

Source: FEMA National Flood Hazard Layer, effective September 30, 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	WALNUT VALLEY WATER DISTRICT serves 100,941 people · EPA ID CA1910234
Water Source	Purchased surface water from several systems
Last State Inspection	Jun 2023
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 549 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Frontier Fiber	7,000 / 7,000
Spectrum Cable · Fiber in parts of the area	1,000 / 1,000
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20
AT&T Fixed Wireless	100 / 20

May also be available: GeoLinks.

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