1423 Copper Mountain, Diamond Bar
$1,269,888
4 bd · 3 ba · 2,380 sqft · Home · Diamond Bar · 77 days on market
Updated August 10, 2026
Key Facts
- Price / SqFt
- $534
- Property Type
- Home
- Year Built
- 1978
- Lot Size
- 7,144 sqft
- Garage
- 2 cars
- Stories
- 2
- Days on Market
- 77
- Listed
- May 26, 2026
- MLS #
- TR26115009
- Status
- Active
Open House
Saturday, August 15, 2026 at 11:00 AM
Request a Showing
About this home
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
Highlights
- 4-bedroom, 3-bath home.
- 2,380 square feet of living space.
- Located in Diamond Bar.
Price History
| Date | Price | Change |
|---|---|---|
| Aug 10, 2026 | $1,269,888 | — |
| Listed May 26, 2026 | ||
Location
About Diamond Bar
- Active Listings
- 82
- Median Price
- $1,098,000
Estimate a Monthly Payment
Estimated Monthly Payment
$8,293/mo
Includes estimated taxes and insurance at the assumption rates below. HOA dues are not included — enter your community's HOA (varies widely by community, and absent from listing data) for an accurate total.
- Principal & Interest
- $6,759
- Property Tax
- $1,164
- Insurance
- $370
- HOAnot included — enter your dues
- $0
Estimate only — not a loan offer or rate quote. Confirm actual figures with a lender.
Get Pre-Approved →Listing courtesy of Samuel G. Castorena Jr
Based on information from California Regional MLS as of 2026-08-10T19:18:17.630Z. 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.