21484 Cold Spring Ln, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 21484 Cold Spring Ln, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	3 bd · 3 ba · 2,796 sqft · built 1977
Lot Size	0.887 acres (38,620 sqft)
Owner	2 Individual Names on Record
Tax Bill	$7,398 (2025)
Deeds & Mortgages	Jul 2020 Mortgage Jul 2017 Transfer
Flood Zone	Zone X (minimal risk)
APN	`8714-002-012`

Property Details

APN / Parcel Number

Primary APN	`8714-002-012`

Interior

Bedrooms	3 Beds
Full Baths	3 Baths
Total Rooms	10 Rooms
Stories	1 Story
Building Area	2,796 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1977
Effective Year Built	Effective 1977
Architectural Style	Conventional
Exterior Material	Stucco
Construction Type	Wood
Roof Material	Wood Shingle
Lot Area	38,620 sqft (0.887 acres)

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	21484 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 10
Legal Subdivision	32974
Legal Tract	32974
Legal Block	2
Legal Lot Number	10
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	21484 COLD SPRING LN, DIAMOND BAR, CA 91765-3813
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Sole Owner

Deeds, Mortgages & Sale History

Date	Document
Jul 9, 2020	Intrafamily Transfer, Transfer · Conventional Mortgage OWNING CORPORATION
Jul 10, 2017	Quit Claim Deed, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Transfer Date	Jul 6, 2020
Transfer Doc	0000752717
Record Updated	Oct 29, 2026

July 2020: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	Jul 9, 2020
Property Address	21484 COLD SPRING LN, DIAMOND BAR, CA 91765-3813
Document Number	0000752717
Map Reference	MB 873 PG 50-56
Instrument Date	Jul 6, 2020
Instrument	20-0752717
Transaction Type	Transfer
Record Updated	Sep 22, 2021
Title Company	ORANGE COAST TITLE

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	21484 COLD SPRING LN, DIAMOND BAR, CA 91765-3813

Mortgage

Document Number	0000752718
Date	Jul 9, 2020
Instrument	20-0752718

Lender

Name	OWNING CORPORATION
Type	Non-Lending Institution

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	180 Months
Due	Jul 1, 2035

July 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Jul 10, 2017
Property Address	21484 COLD SPRING LN, DIAMOND BAR, CA 91765-3813
Document Number	0000766893
Instrument Date	May 12, 2017
Instrument	766893
Transaction Type	Transfer
Record Updated	Jul 25, 2017
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer Partial Interest

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Separate Estate/Property
Address	21484 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		$537,414 (+2%) Land $214,959 Building $322,455
2025	$7,398.00 (+10.67%)	$526,878 (+4.04%) Land $210,745 Building $316,133
2023	$6,685.00 (+2.86%)	$506,420 Land $202,562 Building $303,858
2022	$6,499.00

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.

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