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1423 Copper Mountain Diamond Bar, CA 91765
$1,249,888 4 beds, 3 baths
2, 380 sqft
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Photo of Thomas Van

Thomas Van REALTOR® - Sales Associate 619-726-9832 m
Lic#: 02077006
NRDS ID: 196577555
ThomasVan@bhhscal.com
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Lic#: 02077006
NRDS ID: 196577555
ThomasVan@bhhscal.com
San Diego Central Office
2355 Northside Drive, Suite 180
San Diego, CA 92108
Phone: 619-294-3113
Fax: 619-521-0100
San Diego Central 2355 Northside Drive, Suite 180
San Diego, CA 92108
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Agent Remarks

Nestled on a quiet cul-de-sac in the highly desirable city of Diamond Bar, 1423 Copper Mountain offers the perfect blend of modern upgrades, privacy, energy efficiency, and top-rated schools. Located within walking distance to highly acclaimed Quail Summit Elementary and situated in the award-winning Walnut Valley Unified School District, this beautifully maintained home checks all the boxes for today’s buyers. This turnkey property is currently being refreshed with new interior, exterior paint, upgraded PEX plumbing throughout the home complementing the home’s updated kitchen and modern contemporary feel throughout. From the moment you walk in, you’ll notice the pride of ownership and attention to detail that make this home truly move-in ready. Step outside into your own private backyard retreat featuring mature fruit trees, peaceful surroundings, and scenic city light views. Whether you’re entertaining guests, enjoying your morning coffee, or relaxing after a long day, this backyard offers the perfect combination of tranquility and functionality. One of the standout features of this home is the fully paid solar system, helping dramatically reduce electricity costs year-round — a huge benefit for California homeowners looking for energy-efficient living and long-term savings. Outdoor enthusiasts will appreciate the close proximity to local hiking and walking trails, while the nearby Diamond Bar Center offers community events, concerts in the park, weddings, and year-round entertainment just minutes away. Conveniently located near shopping, dining, parks, and easy freeway access, this home combines suburban comfort with everyday convenience. If you’ve been searching for a modern upgraded home in Diamond Bar with views, paid solar, privacy, excellent schools, hiking trails, and a prime cul-de-sac location, this is one you do not want to miss. Walnut Valley Unified School District Quail Summit Elementary Paid solar home Cul-de-sac home City light views Turnkey home Modern upgrades Private backyard Fruit trees Hiking trails nearby Energy-efficient home Move-in ready Diamond Bar real estate Quiet neighborhood Family-friendly neighborhood

Listing Details

Property type: Single Family Residence (Single Family)
Status: Active Under Contract
MLS# TR26115009
List price is $1,249,888 Reduced by $20,000 on 8/20/2026
HOA Fee is $0.00
Beds: 4
Baths: 3 (3 full)
Family Room fireplaces
Built in 1978
2,380 sqft
2 stories
0.16 acres
Lot size: 0.1640
County: Los Angeles
Construction: Copper Plumbing
Interior features: Open Floorplan
Lot description: ZeroToOneUnitAcre
Heating/cooling: Central Air
Heating description: Central
MLS area: 616 - Diamond Bar

Last Updated: 8/29/2026

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This listing belongs to the 616 - Diamond Bar MLS area

Lat/Long: 33.995495, -117.808864.
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Listing Agent: Samuel Castorena
Lic#: 02077006
Office Name: San Diego Central

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Area Overview

Total population of , which has changed by % since 1990.
The median age of the population is , while the median age of dwellings is .
Out of households, are families.

Community Characteristics:

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Photo of Thomas Van

Thomas Van REALTOR® - Sales Associate 619-726-9832 m
Lic#: 02077006
NRDS ID: 196577555
ThomasVan@bhhscal.com
Text Me
Call My Cell
Lic#: 02077006
NRDS ID: 196577555
ThomasVan@bhhscal.com

San Diego Central Office
2355 Northside Drive, Suite 180
San Diego, CA 92108
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