20128 Diehl St, Walnut, CA 91789 Property Records

Los Angeles County property record for 20128 Diehl St, Walnut, CA 91789

Property Summary

Property Type	Single Family Home
Details	4 bd · 4 ba · 2,862 sqft · built 1964
Lot Size	0.176 acres (7,647 sqft)
Owner	Individual Name on Record
Last Sale	$1,650,000 (Sep 2026)
Tax Bill	$14,935 (2025)
Deeds & Mortgages	Sep 2026 Sale Dec 2025 Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`8720-002-010`

Property Details

APN / Parcel Number

Primary APN	`8720-002-010`

Interior

Bedrooms	4 Beds
Full Baths	4 Baths
Total Rooms	7 Rooms
Stories	1 Story
Building Area	2,862 sqft Living Area

Exterior

Year Built	Built 1964
Effective Year Built	Effective 1997
Architectural Style	Conventional
Exterior Material	Stucco
Construction Type	Wood
Roof Type	Gable
Roof Material	Composition Shingle
Lot Area	7,647 sqft (0.176 acres)
Lot Dimensions	102 ft deep x 72 ft wide

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	20128 DIEHL ST
City	WALNUT
State	CA
Zip	91789-2307
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	WAR17200*
Legal Description	TRACT NO 27883 LOT 10
Legal Subdivision	27883
Legal Tract	27883
Legal Block	1
Legal Lot Number	10
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	1
Census Block	1004
Census Tract	403402

Owner

Source: Los Angeles County records, as of September 22, 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	20128 DIEHL ST, WALNUT, CA 91789-2307
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Unmarried Woman

Deeds, Mortgages & Sale History

Date	Document
Sep 8, 2026	Grant Deed, Transfer WFG NATIONAL TITLE COMPANY, WFG NATIONAL TITLE
Dec 19, 2025	Intrafamily Transfer, Transfer · Conventional Mortgage ECOM MORTGAGE INC
Dec 15, 2020	Grant Deed, Transfer · Conventional Mortgage HSBC BANK USA
Apr 2, 2018	Grant Deed, Transfer · Conventional Mortgage BANK OF THE WEST

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Sep 8, 2026 · Amount on Record
Deed Sale	Sep 8, 2026 · Amount on Record
Prior Sale	Dec 15, 2020 · Amount on Record
Deed Document Number	2026668531
Prior Transfer Date	Dec 13, 2025
Prior Transfer Doc	0000924836
Record Updated	Oct 29, 2026

September 2026: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Sep 8, 2026
Property Address	20128 DIEHL ST, WALNUT, CA 91789-2307
Document Number	0000668531
Instrument Date	Aug 19, 2026
Instrument	2026668531
Transaction Type	Transfer
Record Updated	Sep 15, 2026
Title Company	WFG NATIONAL TITLE COMPANY, WFG NATIONAL TITLE

Transaction

Amount	Amount Recorded
Tax	$183,315.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	20128 DIEHL ST, WALNUT, CA 91789-2307

December 2025: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	Dec 19, 2025
Property Address	20128 DIEHL ST, WALNUT, CA 91789-2307
Document Number	0000924836
Map Reference	MB 710 PG 76-80
Instrument Date	Dec 10, 2025
Instrument	25-0924836
Transaction Type	Transfer
Record Updated	Jan 2, 2026
Title Company	CHICAGO TITLE COMPANY

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name
Address	20128 DIEHL ST, WALNUT, CA 91789-2307

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property with Right of Survivorship
Address	20128 DIEHL ST, WALNUT, CA 91789-2307
Investor	Possibly a Property Investor

Mortgage

Document Number	0000924837
Date	Dec 19, 2025
Instrument	25-0924837

Lender

Name	ECOM MORTGAGE INC
Type	Mortgage Company

Agreement

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

December 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Dec 15, 2020
Property Address	20128 DIEHL ST, WALNUT, CA 91789-2307
Document Number	0001659012
Map Reference	MB 710 PG 76-80
Instrument Date	Dec 9, 2020
Instrument	20-1659012
Transaction Type	Transfer
Record Updated	Sep 22, 2021
Title Company	FIDELITY NATIONAL 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	20128 DIEHL ST, WALNUT, CA 91789-2307
Investor	Possibly a Property Investor

Mortgage

Document Number	0001659013
Date	Dec 15, 2020
Instrument	20-1659013

Lender

Name	HSBC BANK USA
Type	Bank

Agreement

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

April 2018: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Apr 2, 2018
Property Address	20128 DIEHL ST, WALNUT, CA 91789-2307
Document Number	0000312191
Instrument Date	Feb 13, 2018
Instrument	312191
Transaction Type	Transfer
Record Updated	Apr 6, 2018
Title Company	FIDELITY NATIONAL TITLE

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$673.75
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	20128 DIEHL ST WALNUT CA 917892307, WALNUT, CA 91789-2307

Mortgage

Document Number	312192
Date	Apr 2, 2018
Instrument	312192

Lender

Name	BANK OF THE WEST
Type	Bank
Address	OMAHA, NE 68154

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Apr 1, 2048

Tax Assessment & Valuation

Source: Los Angeles County assessment roll, as of August 25, 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
2026		$1,287,241 (+8.11%) Land $656,270 Building $630,971
2025	$14,935.00 (+7.66%)	$1,190,673 (+4.04%) Land $600,532 Building $590,141
2023	$13,872.00 (+2.1%)	$1,144,439 Land $577,213 Building $567,226
2022	$13,587.00

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 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	1 in force
Nearby Flood Claims	2 (1980)
Most Recent Claim	Jan 1980 · tidal / storm surge

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; 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 wildfire likelihood modeled here

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 621 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
AT&T Fixed Wireless	100 / 20
T-Mobile Fixed Wireless	100 / 20

May also be available: GeoLinks.

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