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1423 Copper Mountain
Active

$1,249,888

1423 Copper Mountain, Diamond Bar, CA 91765

4Beds
3Baths
2,380Sq Ft
55Days on Market
Listed by Samuel Castorena, Samuel G. Castorena Jr Listing contact: 626-253-5129
Price per sq ft$525
Built in1978
Lot size0.16 acres
Property typeSingle Family

Overview

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

See it in person

Kurt will walk you through it. No pressure, no runaround.

Kurt Mellinger | Equity Union Real Estate | DRE #02238998

Location

Approximate location of 1423 Copper Mountain, Diamond Bar. Map data © OpenStreetMap contributors © CARTO.

Features

Property typeSingle Family Residence
Year built1978
Living area2,380 sq ft
Lot size0.16 acres
Bedrooms4
Bathrooms3
Stories2
Private poolNot indicated
HOA feeNone listed
Price per sq ft$525
Days on market55
MLS #TR26115009

Estimated monthly payment

/ month
Principal & interest
Property tax (est.)
Home insurance (est.)
HOA / common charges
Down payment
Loan amount

These estimates are for informational purposes only and are not a loan offer, pre-qualification, or commitment to lend. Actual amounts will vary with your rate, credit, taxes, insurance, and HOA dues. Property tax and insurance figures are rough estimates, not the amounts assessed on this property. Confirm all figures with a licensed lender.

Similar properties

Based on information from California Regional Multiple Listing Service, Inc. as of August 25, 2026 at 6:24 PM and/or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Any amount of compensation or commission stated is made only to participants of CRMLS or an MLS that has entered into a datashare agreement with CRMLS.