21470 Cold Spring Ln, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 21470 Cold Spring Ln, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	3 bd · 3 ba · 2,378 sqft · built 1977
Lot Size	0.558 acres (24,314 sqft)
Owner	2 Company Names on Record
Last Sale	$330,000 (Dec 1999)
Tax Bill	$6,191 (2025)
Deeds & Mortgages	Sep 2020 Mortgage Oct 2019 Transfer
Flood Zone	Zone X (minimal risk)
APN	`8714-001-010`

Property Details

APN / Parcel Number

Primary APN	`8714-001-010`

Interior

Bedrooms	3 Beds
Full Baths	3 Baths
Building Area	2,378 sqft Living Area

Exterior

Year Built	Built 1977
Effective Year Built	Effective 1977
Construction Type	Wood
Lot Area	24,314 sqft (0.558 acres)

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	21470 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 17
Legal Subdivision	32974
Legal Tract	32974
Legal Block	2
Legal Lot Number	17
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	21470 COLD SPRING LN, DIAMOND BAR, CA 91765-3813
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Borrower in Default

Deeds, Mortgages & Sale History

Date	Document
Sep 1, 2020	Deed of Trust, Mortgage · Conventional Mortgage OWNING CORPORATION
Oct 9, 2019	Quit Claim Deed, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Dec 29, 1999 · Amount on Record
Deed Sale	Dec 29, 1999 · Amount on Record
Deed Document Number	19992389612
Last Transfer Date	Jul 24, 2019
Transfer Doc	0001072146
Record Updated	Oct 29, 2026

September 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	21470 COLD SPRING LN, DIAMOND BAR, CA 91765-3813
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	ORANGE COAST TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	21470 COLD SPRING LN, DIAMOND BAR, CA 91765-3813

Mortgage

Document Number	0001032063
Date	Sep 1, 2020
Instrument	20-1032063

Lender

Name	OWNING CORPORATION
Type	Non-Lending Institution
Address	ORANGE, CA 92868

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Sep 1, 2050

October 2019: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Oct 9, 2019
Property Address	21470 COLD SPRING LN, DIAMOND BAR, CA 91765-3813
Document Number	0001072146
Instrument Date	Jul 24, 2019
Instrument	1072146
Transaction Type	Transfer
Record Updated	Oct 16, 2019
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	21470 COLD SPRING LN DIAMOND BAR CA 917653813, DIAMOND BAR, CA 91765-3813

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		$451,479 (+2%) Land $266,502 Building $184,977
2025	$6,191.00 (+9.23%) Homeowner's exemption	$442,627 (+4.04%) Land $261,277 Building $181,350
2023	$5,668.00 (+3.02%) Homeowner's exemption	$425,441 Land $251,132 Building $174,309
2022	$5,502.00

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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