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
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
Property Details
Price:
$1,269,888
MLS #:
TR26115009
Status:
Active
Beds:
4
Baths:
3
Type:
Single Family
Subtype:
Single Family Residence
Neighborhood:
616diamondbar
Listed Date:
Jul 24, 2026
Finished Sq Ft:
2,380
Lot Size:
7,144 sqft / 0.16 acres (approx)
Year Built:
1978
See this Listing
Schools
School District:
Walnut Valley Unified
Elementary School:
Quail Summit
Middle School:
Chaparral
High School:
Diamond Bar
Interior
Bathrooms
3 Full Bathrooms
Cooling
CA
Heating
CF
Interior Features
FC, OFP
Laundry Features
IN
Levels
U
Main Level Bathrooms
1
Main Level Bedrooms
1
Exterior
Attached Garage YN
1
Common Walls
NCW
Community Features
SL, CRB
Garage Spaces
2
Parking Spots
2
Parking Total
2
View
CI
Financial
Map
Community
- Address1423 Copper Mountain Diamond Bar CA
- CityDiamond Bar
- CountyLos Angeles
- Zip Code91765
Market Summary
Current real estate data for Single Family in Diamond Bar as of Aug 17, 2026
137
Single Family Listed
74
Avg DOM
424
Avg $ / SqFt
$1,454,040
Avg List Price
Property Summary
- 1423 Copper Mountain Diamond Bar CA is a Single Family for sale in Diamond Bar, CA, 91765. It is listed for $1,269,888 and features 4 beds, 3 baths, and has approximately 2,380 square feet of living space, and was originally constructed in 1978. The current price per square foot is $534. The average price per square foot for Single Family listings in Diamond Bar is $424. The average listing price for Single Family in Diamond Bar is $1,454,040.
Similar Listings Nearby
Courtesy of Samuel G. Castorena Jr. Disclaimer: All data relating to real estate for sale on this page comes from the Broker Reciprocity (BR) of the California Regional Multiple Listing Service. Detailed information about real estate listings held by brokerage firms other than include the name of the listing broker. Neither the listing company nor shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. The Broker providing this data believes it to be correct, but advises interested parties to confirm any item before relying on it in a purchase decision. Copyright 2026. California Regional Multiple Listing Service. All rights reserved.1423 Copper Mountain
Diamond Bar, CA