---
listing_id: CRTR26115009
status: Active
price: 1299999
beds: 4
baths_full: 3
baths_half: 0
sqft_living: 2380
sqft_lot: 7144
lot_acres: 
year_built: 1978
property_type: Residential
property_subtype: Single Family Residence
address: "1423 Copper Mountain"
city: Diamond Bar
state: CA
zip: 91765
county: "Los Angeles County"
lat: 33.995485
lng: -117.8088879
days_on_market: 1
hoa_fee: 
hoa_frequency: 
garage_spaces: 2
list_agent: "Samuel Castorena"
list_office: "Samuel G. Castorena Jr"
list_agent_phone: "(626) 253-5129"
list_agent_license: 01264865
mls_source: CRMLS
modified: 2026-06-13
transaction_type: buy
---

Home | Los Angeles County | Diamond Bar | 91765 | 1423 Copper Mountain

1423 Copper Mountain, Diamond Bar, CA 91765

MLS: CRTR26115009 | Status: Active | Price: $1,299,999
Beds/Baths: 4 / 3
Property Type: Residential

Quick Facts

Beds Baths Sq Ft Sq Ft Lot Yr Built
4 3 2,380 7,144 1978

Upcoming Open Houses

Date Time Hosted By
Sunday, June 14 2:00 pm - 4:00 pm Samuel Castorena

Remarks

Professional pictures coming soon. 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 savin

MLS Listing Information

Field Value
MLS # CRTR26115009
MLS Source California Regional MLS
Days on Site 1

Features

Interior Features

Feature Details
Bedrooms Primary Suite/Retreat
Appliances Other
Family Room Other
Fireplace Family Room
Laundry Other
Cooling Central Forced Air
Heating Central Forced Air

Exterior Features

Feature Details
Pool None

Parking, School, and Other Information

Feature Details
Garage/Parking Garage: 2 Car(s)
Elementary District Walnut Valley Unified
High School District Walnut Valley Unified
HOA Fee $0

Contact Information

Samuel Castorena
Samuel G. Castorena Jr
License #: 01264865
Phone: (626) 253-5129

School Ratings

School data provided by GreatSchools.org

Nearby Schools

School Type Grades Distance Rating
Quail Summit Elementary School public K-5 0.12 mi 9
Chaparral Middle School public 6-8 0.54 mi 10
Maple Hill Elementary School public K-5 0.92 mi 10
Pantera Elementary School public K-6 1.49 mi 10
Lorbeer Middle School public 7-8 1.50 mi 5
Evergreen Elementary School public K-5 1.79 mi 9
Armstrong Elementary School public K-6 1.82 mi 5
Diamond Bar High School public 9-12 2.00 mi 10
Golden Springs Elementary School public K-6 2.07 mi 7
South Pointe Middle School public 6-8 2.29 mi 10
Diamond Ranch High School public 9-12 2.52 mi 8
Castle Rock Elementary School public K-5 2.58 mi 10
Walnut Elementary School public K-5 2.62 mi 9
Walnut Valley Adult public UG 2.62 mi N/A
Ron Hockwalt Academies (Continuation) School public 9-12 2.86 mi N/A
Walnut High School public 9-12 2.98 mi 10
Ranch Hills Elementary School public K-6 3.09 mi 7
Suzanne Middle School public 6-8 3.16 mi 10
Hidden Trails Elementary School public K-6 3.20 mi 10
Country Springs Elementary School public K-6 3.24 mi 10

Nearby Homes

Address Price Beds Baths Sq Ft Status
912 Wynnewood Dr $1,299,900 4 3 2,522 PendingDoNotShow
20951 High Country $1,280,000 3 3 2,178 Active
21203 Fibre Ct $1,190,000 4 2 1,941 Active
23803 Gold Rush Dr $1,500,000 4 2/1 2,647 Active

Disclosures

©2026 California Regional MLS. All rights reserved. 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. Information provided is for personal, non-commercial use by the viewer and may not be redistributed without explicit authorization from California Regional MLS.

Presently MLSListings.com displays Active, Contingent, Pending, and Recently Sold listings. Recently Sold listings are properties which were sold within the last three years. After that period listings are no longer displayed in MLSListings.com. Pending listings are properties under contract and no longer available for sale. Contingent listings are properties where there is an accepted offer, and seller may be seeking back-up offers. Active listings are available for sale.

This listing information is up-to-date as of June 13, 2026. For the most current information, please contact Samuel Castorena, (626) 253-5129.