21504 Cold Spring Lane, Diamond Bar, CA 91765

Single-Family · For sale · $1,580,000 · MLS# WS26113219

Single-Family for sale in Southern California — $1,580,000. 4 beds · 3 baths · 2,712 sqft. Enjoy beautiful mountain views by day and sparkling city lights by night from this lovely home nestled in the desirable hills of Diamond Bar, complete with a private pool perfect for relaxing or entertaining. Energy-e…

21504 Cold Spring Lane
For sale

$1,580,000

21504 Cold Spring Lane, Diamond Bar, CA 91765

4beds
3baths
2,712sqft
Single-FamilyProperty type
1977Year built
0.33 acresLot size
2,712 sqftLiving area
$583/sqftPrice / sqft
HOA
3 spacesGarage

Facts & features

Interior

Bedrooms & bathrooms

  • Bedrooms: 4
  • Bathrooms: 3
  • Full bathrooms: 3

Heating

  • Heating: Central

Cooling

  • Cooling: Central Air

Appliances

  • Laundry: Washer Hookup, Gas Dryer Hookup, Laundry Room

Interior area

  • Living area: 2,712 sqft

Property

Parking

  • Total parking spaces: 3
  • Garage spaces: 3

Lot

  • Lot size: 0.33 acres

Features

  • Pool features: In Ground, Private
  • View: City Lights, Mountains

Construction

Type & style

  • Home type: Single-Family
  • Property subtype: Single Family Residence

Condition

  • Year built: 1977

Community & HOA

Community

  • Has HOA: No

Financial & listing details

  • Days on market: 49 days
  • Price / sqft: $583
  • Status: Active
  • MLS#: WS26113219

Location

  • City: Diamond Bar
  • ZIP: 91765

About this home

Enjoy beautiful mountain views by day and sparkling city lights by night from this lovely home nestled in the desirable hills of Diamond Bar, complete with a private pool perfect for relaxing or entertaining. Energy-efficient upgrades include fully paid-off solar, two Tesla EV charging stations, an electric water heater, a whole-house water softener system, newer roof, and newer A/C. The bright and airy layout features soaring high ceilings in the living room, abundant natural light, a desirable downstairs bedroom, and a spacious 3-car garage. Located within the award-winning Walnut Valley Unified School District with top-rated 10/10 schools, and just minutes from Diamond Hills Plaza featuring H Mart, popular dining, shopping, and everyday conveniences. NO HOA.

Listing updated: July 3, 2026 at 10:23 AM

Listed by: ALLEN SHI, Wetrust Realty

Source: CRMLS, MLS#: WS26113219, Originating MLS: California Regional MLS

Location

Explore parks, streets, and what's around this home.

Diamond Bar

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Facts & features

Interior

Bedrooms & bathrooms

  • Bedrooms: 4
  • Bathrooms: 3
  • Full bathrooms: 3

Heating

  • Heating: Central

Cooling

  • Cooling: Central Air

Appliances

  • Laundry: Washer Hookup, Gas Dryer Hookup, Laundry Room

Interior area

  • Living area: 2,712 sqft

Property

Parking

  • Total parking spaces: 3
  • Garage spaces: 3

Lot

  • Lot size: 0.33 acres

Features

  • Pool features: In Ground, Private
  • View: City Lights, Mountains

Construction

Type & style

  • Home type: Single-Family
  • Property subtype: Single Family Residence

Condition

  • Year built: 1977

Community & HOA

Community

  • Has HOA: No

Financial & listing details

  • Days on market: 49 days
  • Price / sqft: $583
  • Status: Active
  • MLS#: WS26113219

Location

  • City: Diamond Bar
  • ZIP: 91765

Price history

DateEventPrice
5/30/2026Source: CRMLS, #WS26113219Listed for sale$1,580,000$583/sqft
California Regional Multiple Listing Service (CRMLS)

The multiple listing data appearing on this website, or contained in reports produced therefrom, is owned and copyrighted by California Regional Multiple Listing Service, Inc. ("CRMLS") and is protected by all applicable copyright laws. Information provided is for viewer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties the viewer may be interested in purchasing. All listing data, including but not limited to square footage and lot size is believed to be accurate, but the listing Agent, listing Broker and CRMLS and its affiliates do not warrant or guarantee such accuracy. The viewer should independently verify the listed data prior to making any decisions based on such information by personal inspection and/or contacting a real estate professional.

Based on information from California Regional Multiple Listing Service, Inc. as of 2026-07-03 10:23:46 PDT 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 broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information