1429 Copper Mountain Dr, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 1429 Copper Mountain Dr, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	3 bd · 3 ba · 2,033 sqft · built 1978
Lot Size	0.157 acres (6,832 sqft)
Owner	2 Individual Names on Record
Last Sale	$760,000 (Nov 2019)
Tax Bill	$10,493 (2025)
Deeds & Mortgages	Nov 2019 Transfer Nov 2019 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`8702-014-043`

Property Details

APN / Parcel Number

Primary APN	`8702-014-043`

Interior

Bedrooms	3 Beds
Full Baths	3 Baths
Building Area	2,033 sqft Living Area

Exterior

Year Built	Built 1978
Effective Year Built	Effective 1978
Construction Type	Wood
Lot Area	6,832 sqft (0.157 acres)

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	1429 COPPER MOUNTAIN DR
City	DIAMOND BAR
State	CA
Zip	91765-2612
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR18000*
Legal Description	*TR=25096 LOT 203
Legal Subdivision	25096
Legal Tract	25096
Legal Block	3
Legal Lot Number	203
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	3
Census Block	3012
Census Tract	403324

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	1429 COPPER MOUNTAIN DR, DIAMOND BAR, CA 91765-2612
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Nov 22, 2019	Affidavit of Death, Transfer FIRST AMERICAN TITLE
Nov 22, 2019	Grant Deed, Transfer · Conventional Mortgage RIGHT START MORTGAGE INC

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Nov 22, 2019 · Amount on Record
Deed Sale	Nov 22, 2019 · Amount on Record
Deed Document Number	20191283311
Prior Transfer Date	Oct 28, 2019
Prior Transfer Doc	0001283310
Record Updated	Oct 29, 2026

November 2019: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	LOS ANGELES CA
Recording Date	Nov 22, 2019
Property Address	1429 COPPER MOUNTAIN DR, DIAMOND BAR, CA 91765-2612
Document Number	0001283310
Instrument Date	Oct 28, 2019
Instrument	1283310
Transaction Type	Transfer
Record Updated	Dec 4, 2019
Title Company	FIRST AMERICAN TITLE

Transaction

Tax	$0.00
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1429 COPPER MOUNTAIN DR DIAMOND BAR CA 917652612, DIAMOND BAR, CA 91765-2612

November 2019: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Nov 22, 2019
Property Address	1429 COPPER MOUNTAIN DR, DIAMOND BAR, CA 91765-2612
Document Number	0001283311
Map Reference	MB 868 PG 43-54
Instrument Date	Oct 8, 2019
Instrument	19-1283311
Transaction Type	Transfer
Record Updated	Sep 22, 2021
Title Company	FIRST AMERICAN 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	1429 COPPER MOUNTAIN DR, DIAMOND BAR, CA 91765-2612
Investor	Possibly a Property Investor

Mortgage

Document Number	0001283312
Date	Nov 22, 2019
Instrument	19-1283312

Lender

Name	RIGHT START MORTGAGE INC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Dec 1, 2049

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		$847,787 (+2%) Land $528,753 Building $319,034
2025	$10,493.00 (+7.64%) Homeowner's exemption	$831,165 (+4.04%) Land $518,386 Building $312,779
2023	$9,748.00 (+2.14%) Homeowner's exemption	$798,892 Land $498,257 Building $300,635
2022	$9,544.00

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 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	1 in force

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Not rated no burnable land 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 501 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Spectrum Cable	1,000 / 1,000
AT&T Fixed Wireless	100 / 20

May also be available: GeoLinks, T-Mobile, Verizon.

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