1438 Copper Mountain Dr, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 1438 Copper Mountain Dr, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 2,448 sqft · built 1978
Lot Size	0.166 acres (7,229 sqft)
Owner	2 Individual Names on File
Last Sale	$647,500 (Apr 2005)
Tax Bill	$11,634 (2025)
Deeds & Mortgages	May 2022 Second Mortgage Aug 2021 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`8702-014-056`

Property Details

APN / Parcel Number

Primary APN	`8702-014-056`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Building Area	2,448 sqft Living Area

Exterior

Year Built	Built 1978
Effective Year Built	Effective 1979
Construction Type	Wood
Lot Area	7,229 sqft (0.166 acres)

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	1438 COPPER MOUNTAIN DR
City	DIAMOND BAR
State	CA
Zip	91765-2611
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR18000*
Legal Description	*TR=25096 LOT 216
Legal Subdivision	25096
Legal Tract	25096
Legal Block	3
Legal Lot Number	216
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	3
Census Block	3012
Census Tract	403324

Owner

1438 Copper Mountain Dr is owned and occupied by two individuals who bought it in April 2005.

Source: Los Angeles County records, as of August 25, 2026

Owner of Record	2 Individual Names on File
Mailing Address	1438 COPPER MOUNTAIN DR, DIAMOND BAR, CA 91765-2611
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
May 16, 2022	Deed of Trust, Mortgage · Stand-Alone Second Mortgage PROSPECTORS FCU
Aug 17, 2021	Deed of Trust, Mortgage · Conventional Mortgage GUARANTEED RATE INC
Aug 4, 2020	Deed of Trust, Mortgage · Conventional Mortgage OWNING CORPORATION

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Apr 1, 2005 · Amount on File
Deed Sale	Apr 1, 2005 · Amount on File
Deed Document Number	2005760862
Prior Transfer Date	Apr 12, 1997
Prior Transfer Doc	0000871744
Record Updated	Oct 29, 2026

May 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	1438 COPPER MOUNTAIN DR, DIAMOND BAR, CA 91765-2611
Transaction Type	Mortgage
Record Updated	May 23, 2022
Title Company	FIRST AMERICAN TITLE, FIRST AMER TTL CO LOS ANGELE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1438 COPPER MOUNTAIN DR, DIAMOND BAR, CA 91765-2611

Mortgage

Document Number	0000526416
Date	May 16, 2022
Instrument	22-0526416

Lender

Name	PROSPECTORS FCU
Type	Credit Union
Address	DIAMOND BAR, CA 91765

Agreement

Type	Stand-Alone Second Mortgage
Amount	Amount on Record

August 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	1438 COPPER MOUNTAIN DR, DIAMOND BAR, CA 91765-2611
Transaction Type	Mortgage
Record Updated	Aug 25, 2021
Title Company	TWFG NATIONAL TITLE INSURANCE COMPANY, WFG NATIONAL TITLE INS CO

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1438 COPPER MOUNTAIN DR, DIAMOND BAR, CA 91765-2611

Mortgage

Document Number	0001256155
Date	Aug 17, 2021
Instrument	21-1256155

Lender

Name	GUARANTEED RATE INC
Type	Mortgage Company
Address	CHICAGO, IL 60613

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	181 Months
Due	Sep 1, 2036

August 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	1438 COPPER MOUNTAIN DR, DIAMOND BAR, CA 91765-2611
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	ORANGE COAST TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000887430
Date	Aug 4, 2020
Instrument	20-0887430

Lender

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

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Aug 1, 2050

Tax Assessment & Valuation

The 2025 property tax bill for 1438 Copper Mountain Dr was $11,634 with a homeowner's exemption.

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		$943,047 (+2%) Land $566,147 Building $376,900
2025	$11,634.00 Homeowner's exemption	$924,557 Land $555,047 Building $369,510
2023	$10,836.00 (+2.13%) Homeowner's exemption	$888,657 Land $533,495 Building $355,162
2022	$10,610.00

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

FEMA maps place 1438 Copper Mountain Dr in Zone X, an area of minimal flood risk.

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

Wildfire risk around 1438 Copper Mountain Dr is moderate, ranking above 43% of the US, with a 0.05% annual chance of wildfire.

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

Wildfire Risk	Moderate above 43% of the US · lower than 74% of California
Wildfire Likelihood	0.05% 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 344 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Spectrum Cable	1,000 / 1,000

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

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