21725 Lost River, Diamond Bar, CA 91765 - Photo 1 of 33, Diamond Bar, CA
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$1,348,880

21725 Lost River, Diamond Bar, CA 91765

WeTrust Realty
4Beds
3Baths
1,813Sq Ft
2Parking
1963Built
1Days Listed

About This Property

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.

Ya Ting ChanWeTrust Realty626-566-8000

Property Location

Map

Property Details

Property Type
Detached
Bedrooms
4
Bathrooms
3
Building Area
1,813 Sqft
Living Area
1,813 sqft
Year Built
1963
Stories
1.0
Status
Active
Days on Market
1
Cumulative Days on Market
2
Original Price
$1,348,880

Location & Neighborhood

What's nearby 21725 Lost River, Diamond Bar, CA 91765

Nearby Schools

Local Amenities

Fitness

Coffee & Cafes

Dining

Banking

POI data updated 7/18/2026

Diamond Bar Market Snapshot

170

Active Listings

$1.1M

Median Price

62

Avg Days on Market

Last updated: Jul 17, 2026

Based on information from California Regional Multiple Listing Service, Inc. as of the date of this data. This information is for your personal, non-commercial use and may not be used for any purpose other than to identify prospective properties you may be interested in purchasing.

$1,348,880