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$1,299,999 Coming Soon

  • For Sale
  • Coming Soon
  • Single Family
  • 4 Beds
  • 3 Full Baths
  • 2,380 Sq. Ft.
  • 2 Car Garage
  • Updated 17 hours ago

Next open house:

Open House: 11:00 AM - 2:00 PM

Saturday 6/13 11:00 AM - 2:00 PM

1423 Copper Mountain,Diamond Bar, CA 91765

1423 Copper MountainDiamond BarCA91765

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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 and exterior paint, 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

Full Property Details for 1423 Copper Mountain

General

  • Price: $1,299,999
  • Status: Coming Soon
  • Type: Single Family
  • Source: MRMLS
  • MLS ID: TR26115009
  • Updated: 5/27/2026
  • Added to Site: Today

Interior

  • Rooms/Areas: Primary Bedroom, Kitchen, Living Room, Family Room, Primary Bathroom
  • Interior Features: Open Floorplan, Copper Plumbing (Full)
  • Fireplace: Yes
  • Fireplace(s): Family Room

Rooms

Bathrooms

  • Total Bathrooms: 3
  • Full Bathrooms: 3

Bedrooms

  • Total Bedrooms: 4

Other Rooms

  • Laundry: Inside

Additional Information

  • Pool Description: None

Parking

  • Garage: Yes
  • Garage Spaces: 2

Location

  • County: Los Angeles
  • Driving Directions: Qualsummit lesft from DB Blvd than right on Copper Mountain

School Information

  • School District: Walnut Valley Unified
  • Elementary School: QUASUM
  • Middle School: CHAPAR2
  • High School: DIABAR

Community

  • Community Features: Curbs, Street Lights

Heating & Cooling

  • Cooling Type: Central Air
  • Heating Type: Central

Utilities

  • Sewer: Public Sewer
  • Water: Public

Structural Information

  • Structure Type: Single Family Residence
  • Common Walls: No Common Walls
  • Entry Location: 1
  • Stories/Levels: Two
  • Stories Description: Two
  • Square Feet: 2,380
  • Sq. Ft. Source: Assessor
  • Year Built: 1978
  • Year Built Source: Assessor

Lot Features

  • Property View: City Lights
  • Lot Size (Acres): 0.164
  • Lot Size (Sq. Ft.): 7,144
  • Lot Size Source: Assessor
  • Lot Description: 0-1 Unit/Acre

Financial Considerations

  • Price Per Sq. Ft.: $546.22

Disclosures and Reports

  • Special Conditions: Standard

Listed by Samuel G. Castorena Jr, Samuel Castorena

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Listing agent

— 1423 Copper Mountain —

  • Samuel Castorena

    Samuel G. Castorena Jr

626-253-5129

Get Pre-Approved Today

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Schools serving 1423 Copper Mountain

School District:Walnut Valley Unified School District
NameGradesDistance
Quail Summit Elementary School
23330 Quail Summit Drive, Diamond Bar, CA 91765
K-50.1 mi
Chaparral Middle School, Diamond Bar, CA
1408 Spruce Tree Drive, Diamond Bar, CA 91765
6-80.5 mi
Diamond Bar High School
21400 Pathfinder Road, Diamond Bar, CA 91765
9-122.1 mi
Disclaimer: School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 1423 Copper Mountain Get Price Alerts and Save Property

Date
Details
Price
Change
Source
5/27/2026
Listed
$1,299,999
52.94%
MLS
3/30/2020
Sold
$850,000
—
Public Record
Get Price Alerts and Save Property
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Tax History for 1423 Copper Mountain

Year
Property Taxes
Change
Tax Assessment
Change
2025
$11,778
8%
$929,593
4%
2023
$10,950
2%
$893,498
2%
2022
$10,723
2%
$875,980
2%
2021
$10,524
5%
$858,805
4%
2020
$10,063
2%
$828,453
2%
2019
$9,868
4%
$812,210
2%
2018
$9,497
5%
$796,285
2%
2017
$9,059
3%
$780,672
2%
2016
$8,792
-1%
$765,366
2%
2015
$8,846
—
$753,870
2%
2014
$8,851
29%
$739,104
30%
2013
$6,873
—
$568,000
—
View All
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

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*These costs are estimates, and the interest rates assume exceptional credit standing.

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

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Listed by Samuel G. Castorena Jr, Samuel Castorena

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1423 Copper Mountain, Diamond Bar, CA 91765 (MLS# TR26115009) is a Single Family property with 4 bedrooms and 3 full bathrooms. 1423 Copper Mountain is currently listed for $1,299,999 and was received on May 27, 2026. Want to learn more about 1423 Copper Mountain? Do you have questions about finding other Single Family real estate for sale in Diamond Bar? You can browse all Diamond Bar real estate or contact a Coldwell Banker agent to request more information.

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