21725 Lost River Diamond Bar CA 91765 | MLS #TR26156811
Beautifully Remodeled Single-Story Home in the Heart of Diamond Bar!
Welcome to 21725 Lost River Dr., Diamond Bar, a beautifully renovated single-story home offering 4 bedrooms plus a private office, 2.5 bathrooms, and approximately 1,813 sq. ft. of comfortable living space.
This move-in-ready home has been fully remodeled with quality upgrades throughout, including a brand-new roof, new interior and exterior paint, new water piping, new central A/C system, and new insulation, providing comfort, efficiency, and peace of mind for years to come.
The functional floor plan features bright and spacious living areas, generously sized bedrooms, and a dedicated office that’s perfect for working from home, studying, or creating a flex space to fit your lifestyle.
Situated on a desirable lot with a large front yard and spacious backyard, this property offers plenty of room for entertaining, gardening, children to play, or simply relaxing outdoors.
Conveniently located within walking distance to Diamond Bar High School, Evergreen Elementary School, and the popular H Mart shopping plaza, you’ll enjoy easy access to shopping, dining, parks, and everyday conveniences. Located in the highly acclaimed Walnut Valley Unified School District, this home is an exceptional opportunity for families seeking top-rated schools.
Welcome to 21725 Lost River Dr., Diamond Bar, a beautifully renovated single-story home offering 4 bedrooms plus a private office, 2.5 bathrooms, and approximately 1,813 sq. ft. of comfortable living space.
This move-in-ready home has been fully remodeled with quality upgrades throughout, including a brand-new roof, new interior and exterior paint, new water piping, new central A/C system, and new insulation, providing comfort, efficiency, and peace of mind for years to come.
The functional floor plan features bright and spacious living areas, generously sized bedrooms, and a dedicated office that’s perfect for working from home, studying, or creating a flex space to fit your lifestyle.
Situated on a desirable lot with a large front yard and spacious backyard, this property offers plenty of room for entertaining, gardening, children to play, or simply relaxing outdoors.
Conveniently located within walking distance to Diamond Bar High School, Evergreen Elementary School, and the popular H Mart shopping plaza, you’ll enjoy easy access to shopping, dining, parks, and everyday conveniences. Located in the highly acclaimed Walnut Valley Unified School District, this home is an exceptional opportunity for families seeking top-rated schools.
Property Details
Price:
$1,258,880
MLS #:
TR26156811
Status:
Active
Beds:
4
Baths:
3
Type:
Single Family
Subtype:
Single Family Residence
Neighborhood:
616diamondbar
Listed Date:
Jul 17, 2026
Finished Sq Ft:
1,813
Lot Size:
8,392 sqft / 0.19 acres (approx)
Year Built:
1963
See this Listing
Schools
School District:
Walnut Valley Unified
Interior
Bathrooms
2 Full Bathrooms, 1 Half Bathroom
Cooling
CA
Heating
CF
Laundry Features
IG
Levels
A
Main Level Bathrooms
3
Main Level Bedrooms
5
Exterior
Attached Garage YN
1
Common Walls
NCW
Community Features
SDW
Garage Spaces
2
Parking Spots
2
Parking Total
2
View
NO
Financial
Map
Community
- Address21725 Lost River Diamond Bar CA
- CityDiamond Bar
- CountyLos Angeles
- Zip Code91765
Market Summary
Current real estate data for Single Family in Diamond Bar as of Sep 26, 2026
155
Single Family Listed
75
Avg DOM
417
Avg $ / SqFt
$1,325,131
Avg List Price
Property Summary
- 21725 Lost River Diamond Bar CA is a Single Family for sale in Diamond Bar, CA, 91765. It is listed for $1,258,880 and features 4 beds, 3 baths, and has approximately 1,813 square feet of living space, and was originally constructed in 1963. The current price per square foot is $694. The average price per square foot for Single Family listings in Diamond Bar is $417. The average listing price for Single Family in Diamond Bar is $1,325,131. To schedule a showing of MLS#tr26156811 at 21725 Lost River in Diamond Bar, CA, contact your Compass agent at 310.409.7242.
Similar Listings Nearby
Courtesy of WeTrust Realty. 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 Compass include the name of the listing broker. Neither the listing company nor Compass 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.21725 Lost River
Diamond Bar, CA