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4 Beds
3 Baths
1,813 sqft

$1,258,880

21725 Lost River, DIAMOND BAR CA, 91765

Price per sqft$694.36
Built in1963
Property size1,813 sqft
Property typeResidential

Overview

Active

Listed Jul 17, 2026

Updated 3 days ago

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.

$8,375/mo

Est. mortgage payment based on a $1,258,880 home price.

All estimates are provided by Luxury Presence for informational purposes only. Actual amounts may vary.

Additional information

MLS® ID
TR26156811MR

Interior Features

Bedrooms
4
Bathrooms
3
Fireplace
Yes
Cooling
Yes
Heating
Yes
Basement
No

Exterior Features

Lot Size
0.19 Acres

Other Property Details

Garage
Yes

Listed by Ya Ting Chan with WeTrust Realty
Listing Contact: 909.606.0888 

Based on information from The MLSTM / Combined LA/Westside Multiple Listing Service, Inc. IDX information is provided exclusively for consumers' personal, non-commercial use, it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. All information is deemed reliable but not guaranteed and should be independently reviewed and verified. Property locations as displayed on any map are best approximations only and exact locations should be independently verified. All properties are subject to prior sale, change or withdrawal, and may or may not be listed by the office/agent presenting the information. Neither listing broker(s) nor Approach Properties Premium Real Estate Services shall be responsible for any typographical errors, misinformation, misprints and shall be held totally harmless. 

©2026 Combined L.A./Westside MLS. All rights reserved.

Data last updated 10/4/2026

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