21433 Cold Spring Ln, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 21433 Cold Spring Ln, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 2,037 sqft · built 1977
Lot Size	0.532 acres (23,187 sqft)
Owner	2 Individual Names on Record
Last Sale	$535,000 (Dec 2004)
Tax Bill	$9,637 (2025)
Deeds & Mortgages	Oct 2019 Mortgage Jun 2021 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`8714-005-004`

Property Details

APN / Parcel Number

Primary APN	`8714-005-004`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Building Area	2,037 sqft Living Area

Exterior

Year Built	Built 1977
Effective Year Built	Effective 1977
Construction Type	Wood
Lot Area	23,187 sqft (0.532 acres)

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	21433 COLD SPRING LN
City	DIAMOND BAR
State	CA
Zip	91765-3814
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR19000*
Legal Description	*TR=32974 LOT 27
Legal Subdivision	32974
Legal Tract	32974
Legal Block	2
Legal Lot Number	27
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	2
Census Block	2019
Census Tract	403325

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	21433 COLD SPRING LN, DIAMOND BAR, CA 91765-3814
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

Deeds, Mortgages & Sale History

Date	Document
Oct 28, 2019	Deed of Trust, Mortgage · Conventional Mortgage UNITED WHOLESALE MORTGAGE
Jun 18, 2021	Deed of Trust, Mortgage · Conventional Mortgage HOME POINT FINANCIAL CORPORATION

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Dec 10, 2004 · Amount on Record
Deed Sale	Dec 10, 2004 · Amount on Record
Prior Sale	Sep 28, 2004 · Amount on Record
Deed Document Number	20043187507
Prior Transfer Date	Aug 25, 2004
Prior Transfer Doc	0002256549
Record Updated	Sep 20, 2026

October 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	21433 COLD SPRING LN, DIAMOND BAR, CA 91765-3814
Transaction Type	Mortgage
Record Updated	Jul 20, 2022
Title Company	TICOR TITLE RIVERSIDE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0001156362
Date	Oct 28, 2019
Instrument	19-1156362

Lender

Name	UNITED WHOLESALE MORTGAGE
Type	Mortgage Company
Address	PONTIAC, MI 48341

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Nov 1, 2049

June 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	21433 COLD SPRING LN, DIAMOND BAR, CA 91765-3814
Transaction Type	Mortgage
Record Updated	Jul 20, 2022
Title Company	TICOR TITLE RIVERSIDE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	21433 COLD SPRING LN, DIAMOND BAR, CA 91765-3814

Mortgage

Document Number	0000965736
Date	Jun 18, 2021
Instrument	21-0965736

Lender

Name	HOME POINT FINANCIAL CORPORATION
Type	Mortgage Company
Address	PARSIPPANY, NJ 07054

Agreement

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

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	Diamond Bar City
Unified School District	Walnut Valley Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2025	$9,637.00 (+7.39%)	$745,723 (+4.04%) Land $541,248 Building $204,475
2023	$8,974.00 (+2.09%)	$716,768 Land $520,232 Building $196,536
2022	$8,790.00

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	Moderate above 50% of the US · lower than 70% of California
Wildfire Likelihood	0.09% annual chance
Exposure	Indirect within ember reach
Adjoins Burnable Land	Yes

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 234 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Spectrum Cable	1,000 / 1,000
T-Mobile Fixed Wireless	100 / 20

May also be available: Frontier, GeoLinks, Verizon.

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