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21725 Lost River DR, Diamond Bar CA 91765
21725 Lost River DR, Diamond Bar CA 91765
California>Los Angeles County>East San Gabriel Valley

21725 Lost River DRDiamond Bar, CA 91765

For Sale

$1,258,880

Smart Buyer Rebate $12,589

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.

Listed by Ya Ting Chan

·

License #01872450

·

WeTrust Realty

·

626.566.8000

Last updated September 14, 2026

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Source: CRMLS #TR26156811

Listing Facts

  • TypeSingle-family
  • NeighborhoodEast San Gabriel Valley
  • Bedrooms4
  • Bathrooms2.5
  • Days on Prevu60
  • Size1,813 sqft
  • Price per sqft$694

Amenities

  • Air Conditioning
  • Parking
  • Swimming Pool

Location

Mortgage Calculator

Listing History

09/15/2026
Price Decreased
$1,258,880
07/21/2026
Status changed to Active
$1,348,880
07/20/2026
Status changed to Removed from Feed
$1,348,880
07/17/2026
Listed by WeTrust Realty
$1,348,880
  1. 09/15/2026$1,258,880
    Price Decreased
  2. 07/21/2026$1,348,880
    Status changed to Active
  3. 07/20/2026$1,348,880
    Status changed to Removed from Feed
  4. 07/17/2026$1,348,880
    Listed by WeTrust Realty

Property Details for 21725 Lost River DR

Association

Amenities

  • Community Features: Sidewalks

Exterior

Construction

  • Number Of Units Total: 1
  • Stories: 1
  • Stories Total: 1
  • Structure Type: House
  • Year Built: 1963
  • Common Walls: No Common Walls
  • Entry Level: 1
  • Entry Location: 1

Measurements

  • Lot Size Acres: 0.19
  • Lot Size Area: 8,392
  • Lot Size Source: Assessor
  • Lot Size Square Feet: 8,392
  • Lot Size Units: Square Feet

Financial

Taxes

  • Parcel Number: 8285007027

Interior

Features

  • Fireplace: Yes

Measurements

  • Living Area: 1,813
  • Living Area Source: Assessor
  • Living Area Units: Square Feet

Rooms

  • Bathrooms Full: 2
  • Bathrooms Half: 1
  • Bathrooms Total Integer: 3
  • Bedrooms Total: 4
  • Main Level Bathrooms: 3
  • Main Level Bedrooms: 5

Other

Location

  • Tax Lot: 100

Parking

Parking

  • Attached Garage: Yes
  • Garage Spaces: 2
  • Garage: Yes
  • Parking Features: Attached
  • Parking Total: 2

Schools

High School

  • High School District: Walnut Valley Unified

Utilities

Equipment

  • Cooling: Central Air
  • Has Cooling: Yes
  • Heating: Central
  • Has Heating: Yes
  • Laundry Features: In Garage
  • Sewer: Public Sewer
  • Water Source: Public

Frequently Asked Questions

How many bedrooms and bathrooms does this single-family home have?

There are 4 bedrooms and 2.5 bathrooms in this single-family home at 21725 Lost River DR.

Does this single-family home have parking?

Yes, there are 2 parking spaces available for 21725 Lost River DR.

How does 21725 Lost River DR compare to other single-family homes in East San Gabriel Valley?

This single-family home is listed 4% above the average price for single-family homes in East San Gabriel Valley and has been on the market for 23 less days than the typical home in this area.

What is the square footage on this single-family home?

According to the MLS, this listing is 1,813 sqft.

21725 Lost River DR is a 4-bedroom, 2.5-bath single-family home for sale in Diamond Bar CA 91765. Listed on Prevu for 60 days at $1,258,880. This includes a recent price decrease of $90,000. This property features 1,813 square feet of living space, located in East San Gabriel Valley. The median listing price for single-family homes in this area is $840,000. The home offers air conditioning, parking, and swimming pool. Explore more single-family home listings in Los Angeles County.

Based on information from California Regional Multiple Listing Service, Inc. and/or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by Prevu or the MLS. Information is provided exclusively for consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumer may be interested in purchasing.

Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.