21481 Cold Spring Ln, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 21481 Cold Spring Ln, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	5 bd · 4 ba · 3,273 sqft · built 1977
Lot Size	0.338 acres (14,736 sqft)
Owner	Individual Name on Record
Last Sale	$1,080,000 (Jan 2021)
Tax Bill	$14,786 (2025)
Deeds & Mortgages	Jan 2021 Sale & Mortgage Jul 2017 Transfer
Flood Zone	Zone X (minimal risk)
APN	`8714-004-007`

Property Details

APN / Parcel Number

Primary APN	`8714-004-007`

Interior

Bedrooms	5 Beds
Full Baths	4 Baths
Building Area	3,273 sqft Living Area

Exterior

Year Built	Built 1977
Effective Year Built	Effective 1987
Construction Type	Wood
Lot Area	14,736 sqft (0.338 acres)

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	21481 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 39
Legal Subdivision	32974
Legal Tract	32974
Legal Block	2
Legal Lot Number	39
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 August 25, 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	21481 COLD SPRING LN, DIAMOND BAR, CA 91765-3814
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Jan 13, 2021	Grant Deed, Transfer · Conventional Mortgage UNITED WHOLESALE MORTGAGE LLC
Jul 26, 2017	Quit Claim Deed, Transfer Quitclaim

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Jan 13, 2021 · Amount on Record
Deed Sale	Jan 13, 2021 · Amount on Record
Prior Sale	Mar 3, 2015 · Amount on Record
Deed Document Number	202166170
Prior Transfer Date	Jun 28, 2017
Prior Transfer Doc	0000840396
Record Updated	Oct 29, 2026

January 2021: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Jan 13, 2021
Property Address	21481 COLD SPRING LN, DIAMOND BAR, CA 91765-3814
Document Number	0000066170
Map Reference	MB 873 PG 50-58
Instrument Date	Dec 31, 2020
Instrument	21-0066170
Transaction Type	Transfer
Record Updated	Sep 22, 2021
Title Company	WFG NATIONAL TITLE COMPANY

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	21481 COLD SPRING LN, DIAMOND BAR, CA 91765-3814
Investor	Possibly a Property Investor

Mortgage

Document Number	0000066171
Date	Jan 13, 2021
Instrument	21-0066171

Lender

Name	UNITED WHOLESALE MORTGAGE LLC

Agreement

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

July 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Jul 26, 2017
Property Address	21481 COLD SPRING LN, DIAMOND BAR, CA 91765-3814
Document Number	0000840396
Instrument Date	Jun 28, 2017
Instrument	840396
Transaction Type	Transfer
Record Updated	Aug 7, 2017

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	14121 RATH ST LA PUENTE CA 917461700, LA PUENTE, CA 91746-1700

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

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$1,192,404 (+2%) Land $706,721 Building $485,683
2025	$14,786.00 (+7.37%)	$1,169,024 (+4.04%) Land $692,864 Building $476,160
2023	$13,771.00 (+2.09%)	$1,123,631 Land $665,960 Building $457,671
2022	$13,489.00

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 44% of the US · lower than 74% of California
Wildfire Likelihood	0.06% annual chance
Exposure	Indirect 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 565 locations within half a mile, as of December 31, 2025

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

May also be available: Frontier, Verizon.

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