21429 Cold Spring Ln, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 21429 Cold Spring Ln, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	3 bd · 3 ba · 2,712 sqft · built 1977
Lot Size	0.605 acres (26,373 sqft)
Owner	2 Company Names on Record
Tax Bill	$2,137 (2025)
Deeds & Mortgages	Jan 2021 Transfer Jan 2021 Transfer
Flood Zone	Zone X (minimal risk)
APN	`8714-005-003`

Property Details

APN / Parcel Number

Primary APN	`8714-005-003`

Interior

Bedrooms	3 Beds
Full Baths	3 Baths
Building Area	2,712 sqft Living Area

Exterior

Year Built	Built 1977
Effective Year Built	Effective 1977
Construction Type	Wood
Lot Area	26,373 sqft (0.605 acres)

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	21429 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 26
Legal Subdivision	32974
Legal Tract	32974
Legal Block	2
Legal Lot Number	26
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	2 Company Names on Record
Mailing Address	21429 COLD SPRING LN, DIAMOND BAR, CA 91765-3814
Owner Type	Company
Vesting	Borrower in Default

Deeds, Mortgages & Sale History

Date	Document
Jan 4, 2021	Affidavit of Death, Transfer ATTORNEY ONLY
Jan 4, 2021	Quit Claim Deed, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Transfer Date	Nov 10, 2020
Transfer Doc	0000001316
Record Updated	Oct 29, 2026

January 2021: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	LOS ANGELES CA
Recording Date	Jan 4, 2021
Property Address	21429 COLD SPRING LN, DIAMOND BAR, CA 91765-3814
Document Number	0000001315
Instrument Date	Nov 10, 2020
Instrument	1315
Transaction Type	Transfer
Record Updated	Jan 26, 2021
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	21429 COLD SPRING LN DIAMOND BAR CA 917653814, DIAMOND BAR, CA 91765-3814

January 2021: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Jan 4, 2021
Property Address	21429 COLD SPRING LN, DIAMOND BAR, CA 91765-3814
Document Number	0000001316
Instrument Date	Nov 10, 2020
Instrument	1316
Transaction Type	Transfer
Record Updated	Jan 26, 2021
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	21429 COLD SPRING LN DIAMOND BAR CA 917653814, DIAMOND BAR, CA 91765-3814

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		$279,722 (+2%) Land $44,092 Building $235,630
2025	$2,137.00 (+10.61%)	$274,238 (+4.04%) Land $43,228 Building $231,010
2024	$1,932.00 (-1.38%)
2023	$1,959.00 (-2.54%)	$263,591 Land $41,550 Building $222,041
2022	$2,010.00

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.

Nearby Properties on Cold Spring Ln

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures