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Shawn Bengtson

Office Broker - DRE 01236964

  • Office 760-805-7199
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21725 Lost River, Diamond Bar – $1,348,880

  • 4 Beds
  • 3 Baths
  • 1,813 Sqft
  • .19 Acres
  • 4 Beds
  • 3 Baths
  • 1,813 Sqft
  • .19 Acres

21725 Lost River

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.

Essential Information

  • MLS® #TR26156811
  • Price$1,348,880
  • Bedrooms4
  • Bathrooms3.00
  • Full Baths2
  • Half Baths1
  • Square Footage1,813
  • Acres0.19
  • Year Built1963
  • TypeResidential
  • Sub-TypeSingle Family Residence
  • StatusActive

Community Information

  • Address21725 Lost River
  • Area616 - Diamond Bar
  • CityDiamond Bar
  • CountyLos Angeles
  • Zip Code91765

Amenities

  • Parking Spaces2
  • # of Garages2
  • ViewNone
  • PoolNone

Interior

  • Interior FeaturesAll Bedrooms Down
  • HeatingCentral
  • CoolingCentral Air
  • FireplaceYes
  • FireplacesBonus Room
  • # of Stories1
  • StoriesOne

Exterior

  • Lot DescriptionLawn

School Information

  • DistrictWalnut Valley Unified

Additional Information

  • Date ListedJuly 17th, 2026
  • Days on Market51

Listing Details

  • AgentYa Ting Chan
  • OfficeWeTrust Realty
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Ya Ting Chan, WeTrust Realty.

Based on information from California Regional Multiple Listing Service, Inc. as of September 6th, 2026 at 11:45pm PDT. 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. Display of MLS data is usually deemed reliable but is NOT guaranteed accurate by the MLS. Buyers are responsible for verifying the accuracy of all information and should investigate the data themselves or retain appropriate professionals. Information from sources other than the Listing Agent may have been included in the MLS data. Unless otherwise specified in writing, Broker/Agent has not and will not verify any information obtained from other sources. The Broker/Agent providing the information contained herein may or may not have been the Listing and/or Selling Agent.