21474 Cold Spring Ln, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 21474 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	0.636 acres (27,707 sqft)
Owner	2 Individual Names on Record
Last Sale	$610,000 (Sep 2009)
Tax Bill	$10,318 (2025)
Deeds & Mortgages	Sep 2021 Mortgage Aug 2019 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`8714-001-008`

Property Details

APN / Parcel Number

Primary APN	`8714-001-008`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	2,037 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1977
Effective Year Built	Effective 1977
Architectural Style	Contemporary
Exterior Material	Stucco
Construction Type	Wood
Roof Material	Wood Shingle
Lot Area	27,707 sqft (0.636 acres)

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	21474 COLD SPRING LN
City	DIAMOND BAR
State	CA
Zip	91765-3813
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR19000*
Legal Description	*TR=32974 LOT 15
Legal Subdivision	32974
Legal Tract	32974
Legal Block	2
Legal Lot Number	15
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 Individual Names on Record
Mailing Address	21474 COLD SPRING LN, DIAMOND BAR, CA 91765-3813
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

Deeds, Mortgages & Sale History

Date	Document
Sep 15, 2021	Deed of Trust, Mortgage · Commercial Mortgage ROYAL BUSINESS BANK
Aug 20, 2019	Deed of Trust, Mortgage · ARM EAST WEST BANK

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Sep 21, 2009 · Amount on Record
Deed Sale	Sep 21, 2009 · Amount on Record
Prior Sale	May 27, 2005 · Amount on Record
Deed Document Number	20091434355
Last Transfer Date	Sep 18, 2015
Transfer Doc	0001244738
Record Updated	Oct 29, 2026

September 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	21474 COLD SPRING LN, DIAMOND BAR, CA 91765-3813
Transaction Type	Mortgage
Record Updated	Sep 27, 2021
Title Company	CHICAGO TITLE COMPANY-C/I, CHICAGO TITLE CO COM DIV

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	21474 COLD SPRING LN, DIAMOND BAR, CA 91765-3813

Mortgage

Document Number	0001413017
Date	Sep 15, 2021
Instrument	21-1413017

Lender

Name	ROYAL BUSINESS BANK
Type	Bank
Address	LOS ANGELES, CA 90017

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded

Interest

Rate Type	Adjustable Rate

August 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	21474 COLD SPRING LN, DIAMOND BAR, CA 91765-3813
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	FIDELITY NATIONAL TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000836326
Date	Aug 20, 2019
Instrument	19-0836326

Lender

Name	EAST WEST BANK
Type	Bank
Address	EL MONTE, CA 91731

Agreement

Type	ARM
Amount	Amount Recorded
Term	361 Months
Due	Sep 1, 2049

Interest

Rate Type	Adjustable Rate
Rate	4.62%
Type Change Date	Sep 1, 2022
Change Frequency	Annually
Min Rate At Change	3.32%
Max Rate At Change	6.62%
Index	1-Year CMT
Max Rate	10.6%

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		$803,135 (+2%) Land $394,985 Building $408,150
2025	$10,318.00 (+8.29%)	$787,389 (+4.04%) Land $387,241 Building $400,148
2023	$9,528.00 (+2.63%)	$756,815 Land $372,205 Building $384,610
2022	$9,284.00

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	Low lower than 66% of the US · lower than 80% of California
Wildfire Likelihood	0.03% 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 425 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Frontier Fiber	7,000 / 7,000
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: Verizon.

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