23820 Decorah Rd, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 23820 Decorah Rd, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 1,915 sqft · built 1964
Lot Size	0.229 acres (9,987 sqft)
Owner	2 Company Names on File
Last Sale	$185,000 (Sep 1998)
Tax Bill	$5,107 (2025)
Deeds & Mortgages	Apr 2021 Transfer Jan 2021 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`8703-003-008`

Property Details

APN / Parcel Number

Primary APN	`8703-003-008`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	10 Rooms
Stories	1 Story
Building Area	1,915 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1964
Effective Year Built	Effective 1973
Architectural Style	Conventional
Exterior Material	Stucco
Construction Type	Wood
Roof Type	Gable
Roof Material	Wood Shingle
Lot Area	9,987 sqft (0.229 acres)
Lot Dimensions	146 ft deep x 68 ft wide
Garage Type	Attached

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central
Water Source	Commercial

Location & Zoning

Street Address	23820 DECORAH RD
City	DIAMOND BAR
State	CA
Zip	91765-1405
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR108
Legal Description	TRACT NO 27530 LOT 137
Legal Subdivision	27530
Legal Tract	27530
Legal Block	3
Legal Lot Number	137
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	3
Census Block	3006
Census Tract	403316

Owner

23820 Decorah Rd is owned by a company that bought it in September 1998 and is owner-occupied.

Source: Los Angeles County records, as of August 25, 2026

Owner of Record	2 Company Names on File
Mailing Address	23820 DECORAH RD, DIAMOND BAR, CA 91765-1405
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Borrower in Default

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
Apr 23, 2021	Intrafamily Transfer, Transfer
Jan 27, 2021	Intrafamily Transfer, Transfer · Conventional Mortgage AMERICAN FINANCIAL NETWORK INC

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Sep 28, 1998 · Amount on File
Deed Sale	Sep 28, 1998 · Amount on File
Deed Document Number	19981755242
Prior Transfer Date	Aug 25, 1993
Prior Transfer Doc	0001997643
Record Updated	Oct 29, 2026

April 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	Apr 23, 2021
Property Address	23820 DECORAH RD, DIAMOND BAR, CA 91765-1405
Document Number	0000645652
Map Reference	MB 714 PG 76-80
Instrument Date	Mar 1, 2021
Instrument	21-0645652
Transaction Type	Transfer
Record Updated	May 12, 2021

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	23820 DECORAH RD, DIAMOND BAR, CA 91765-1405

January 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	Jan 27, 2021
Property Address	23820 DECORAH RD, DIAMOND BAR, CA 91765-1405
Document Number	0000152807
Map Reference	MB 714 PG 76-80
Instrument Date	Jan 21, 2021
Instrument	21-0152807
Transaction Type	Transfer
Record Updated	Sep 22, 2021
Title Company	CHICAGO TITLE COMPANY

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	23820 DECORAH RD, DIAMOND BAR, CA 91765-1405

Mortgage

Document Number	0000152808
Date	Jan 27, 2021
Instrument	21-0152808

Lender

Name	AMERICAN FINANCIAL NETWORK INC
Type	Funding / Finance Company

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Feb 1, 2051

Tax Assessment & Valuation

The 2025 property tax bill for 23820 Decorah Rd was $5,107 with a homeowner's exemption.

Source: Los Angeles County assessment roll, as of August 25, 2026

Property Jurisdictions

Type	Name
State	California
County	Los Angeles County
Municipality	Diamond Bar City
Unified School District	Pomona Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$352,372 (+2%) Land $159,571 Building $192,801
2025	$5,107.00 Homeowner's exemption	$345,475 Land $156,443 Building $189,032
2023	$4,549.00 (+1.65%) Homeowner's exemption	$332,062 Land $150,369 Building $181,693
2022	$4,475.00

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

Flood

FEMA maps place 23820 Decorah Rd in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1980.

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 Claims	1 (1980)
Most Recent Claim	Feb 1980 · rainfall accumulation

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

Wildfire risk around 23820 Decorah Rd is low, with a 0.01% annual chance of wildfire.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Low lower than 80% of the US · lower than 88% of California
Wildfire Likelihood	0.01% annual chance
Exposure	None beyond 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 519 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Spectrum Cable	1,000 / 1,000
Verizon Fixed Wireless	300 / 20
AT&T Fixed Wireless	100 / 20

May also be available: Frontier, GeoLinks, T-Mobile.

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