21502 Cold Spring Ln, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 21502 Cold Spring Ln, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	3 bd · 3 ba · 2,321 sqft · built 1977
Lot Size	0.401 acres (17,453 sqft)
Owner	2 Company Names on Record
Last Sale	$760,000 (Nov 2017)
Tax Bill	$11,246 (2025)
Deeds & Mortgages	Aug 2023 Transfer Aug 2023 Transfer + 2 more
Flood Zone	Zone X (minimal risk)
APN	`8714-002-004`

Property Details

APN / Parcel Number

Primary APN	`8714-002-004`

Interior

Bedrooms	3 Beds
Full Baths	3 Baths
Building Area	2,321 sqft Living Area

Exterior

Year Built	Built 1977
Effective Year Built	Effective 1980
Construction Type	Wood
Lot Area	17,453 sqft (0.401 acres)

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	21502 COLD SPRING LN
City	DIAMOND BAR
State	CA
Zip	91765-3815
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR19000*
Legal Description	*TR=32974 LOT 2
Legal Subdivision	32974
Legal Tract	32974
Legal Block	2
Legal Lot Number	2
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	2
Census Block	2017
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	21502 COLD SPRING LN, DIAMOND BAR, CA 91765-3815
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust, Family Trust

Deeds, Mortgages & Sale History

Date	Document
Aug 8, 2023	Affidavit of Death of Joint Tenant, Transfer
Aug 8, 2023	Intrafamily Transfer, Transfer
May 17, 2018	Deed of Trust, Mortgage · Conventional Mortgage BOFI FEDERAL BANK
Nov 20, 2017	Grant Deed, Transfer · ARM BOFI FEDERAL BANK

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Nov 20, 2017 · Amount on Record
Deed Sale	Nov 20, 2017 · Amount on Record
Prior Sale	Dec 30, 2004 · Amount on Record
Deed Document Number	20171333477
Last Transfer Date	Aug 4, 2023
Transfer Doc	0000523961
Record Updated	Oct 29, 2026

August 2023: Affidavit of Death of Joint Tenant, Transfer

Document Type	Affidavit of Death of Joint Tenant
Jurisdiction	LOS ANGELES CA
Recording Date	Aug 8, 2023
Property Address	21502 COLD SPRING LN, DIAMOND BAR, CA 91765-3815
Document Number	0000523960
Map Reference	MB 873 PG 50-56
Instrument Date	Aug 4, 2023
Instrument	23-0523960
Transaction Type	Transfer
Record Updated	Aug 22, 2023

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	21502 COLD SPRING LN, DIAMOND BAR, CA 91765-3815

August 2023: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	Aug 8, 2023
Property Address	21502 COLD SPRING LN, DIAMOND BAR, CA 91765-3815
Document Number	0000523961
Map Reference	MB 873 PG 50-56
Instrument Date	Aug 4, 2023
Instrument	23-0523961
Transaction Type	Transfer
Record Updated	Aug 22, 2023

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	Family Trust
Address	21502 COLD SPRING LN, DIAMOND BAR, CA 91765-3815

May 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	21502 COLD SPRING LN, DIAMOND BAR, CA 91765-3815
Transaction Type	Mortgage
Record Updated	Jul 20, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000489553
Date	May 17, 2018
Instrument	18-0489553

Lender

Name	BOFI FEDERAL BANK
Type	Bank
Address	SAN DIEGO, CA 92122

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	181 Months
Due	Jun 1, 2033

November 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Nov 20, 2017
Property Address	21502 COLD SPRING LN, DIAMOND BAR, CA 91765-3815
Document Number	0001333477
Map Reference	MB873 PG50-56
Instrument Date	Sep 7, 2017
Instrument	17-1333477
Transaction Type	Transfer
Record Updated	Jul 20, 2022
Title Company	PACIFIC COAST 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
Relationship	Joint Tenants
Address	21502 COLD SPRING LN, DIAMOND BAR, CA 91765-3815

Mortgage

Document Number	0001333478
Date	Nov 20, 2017
Instrument	17-1333478

Lender

Name	BOFI FEDERAL BANK
Type	Bank

Agreement

Type	ARM
Amount	Amount Recorded
Term	361 Months
Due	Dec 1, 2047

Interest

Rate Type	Adjustable Rate
Rate	5.5%
Type Change Date	Dec 1, 2022
Change Frequency	Annually
Min Rate At Change	5.5%
Max Rate At Change	11.5%
Index	1-Year LIBOR
Max Rate	11.5%

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		$882,039 (+2%) Land $643,193 Building $238,846
2025	$11,246.00 (+8.54%)	$864,745 (+4.04%) Land $630,582 Building $234,163
2023	$10,361.00 (+2.59%)	$831,168 (+2%) Land $606,097 Building $225,071
2022	$10,099.00	$814,871 Land $594,213 Building $220,658

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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