21725 Lost River, Diamond Bar
21725 Lost River, Diamond Bar
21725 Lost River, Diamond Bar
21725 Lost River, Diamond Bar
21725 Lost River, Diamond Bar
21725 Lost River, Diamond Bar
21725 Lost River, Diamond Bar
21725 Lost River, Diamond Bar
21725 Lost River, Diamond Bar
1 / 9 For Sale
For Sale

21725 Lost River

Diamond Bar, CA 91765 · Listed Jul 17, 2026 · 43 days on market

$1,348,880

  • 4Beds
  • 2.5Baths
  • 1,813Sqft
  • 8,392Lot Sqft

About this home

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.

Facts & Features

As reported to the California Regional MLS by the listing agent; buyer to verify.

Bedrooms & Bathrooms

  • Bedrooms: 4
  • Bathrooms: 2.5 (2 full · 1 half)
  • Main-level bedrooms: 5
  • Main-level bathrooms: 3

Interior & Layout

  • Living area: 1,813 sq ft
  • Levels: One
  • Entry level: 1 (1)
  • All bedrooms downstairs
  • No common walls

Systems & Appliances

  • Fireplace: Bonus room
  • Heating: Central
  • Cooling: Central air
  • Laundry: In garage

Parking

  • Attached garage: 2 spaces
  • Total parking: 2 spaces

Construction & Utilities

  • Year built: 1963
  • Sewer: Public sewer
  • Water: Public

Lot, Outdoor & Community

  • Lot: 8,392 sq ft
  • Lot features: Lawn
  • HOA: None per MLS
  • Community: Sidewalks

Listing Details

  • MLS #: TR26156811
  • Financing terms: Cash to new loan
  • Occupant: Vacant

Payment estimate

What would this home cost per month?

/ month

  • Principal & interest
  • Property tax
  • Home insurance
  • HOA dues
  • Mortgage insurance (PMI)

Estimated cash to close (down payment + about 2.5% closing costs)

Estimate only, using standard assumptions you can edit above. Rates and taxes vary; Duri can connect you with a local lender for an exact quote. Not a commitment to lend.

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Location

The Property & Neighborhood

Satellite view · 21725 Lost River, Diamond Bar, CA 91765 · Click the map to enable scroll zoom

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Nearest active listings ranked by distance · live from the California Regional MLS · see them on the map or call Duri to tour any of them.

Contact Me

Ask Duri Hussain — buyer’s agent, not the listing agent

Questions about 21725 Lost River? Leave your details and Duri Hussain (Real Brokerage Technologies) will get back to you shortly — your message goes to Duri, not to the listing agent.

Listing Office: WeTrust Realty · Listing Agent: Ya Ting Chan. Based on information from California Regional Multiple Listing Service, Inc. as of September 11, 2026 at 4:41 pm. 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.

MLS# TR26156811 · Presented by Duri Hussain, Realtor® (DRE# 02234095) · Real Brokerage Technologies (DRE# 02022092)