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$1,580,000 Just Listed

  • For Sale
  • Active
  • Single Family
  • 4 Beds
  • 3 Full Baths
  • 2,712 Sq. Ft.
  • 3 Car Garage
  • Updated 17 hours ago
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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.

Full Property Details for 21504 Cold Spring

General

  • Price: $1,580,000
  • Status: Active
  • Type: Single Family
  • Source: MRMLS
  • MLS ID: WS26113219
  • Updated: 5/31/2026
  • Days on Market: 1 days
  • Added to Site: 2 day(s) ago

Interior

  • Rooms/Areas: Jack & Jill, Walk-In Closet, Primary Bedroom, Walk-In Pantry, Laundry, Foyer, Kitchen, Living Room, Main Floor Bedroom, Family Room, Primary Bathroom
  • Fireplace: Yes
  • Fireplace(s): Family Room

Rooms

Bathrooms

  • Total Bathrooms: 3
  • Full Bathrooms: 3

Bedrooms

  • Total Bedrooms: 4

Other Rooms

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

Additional Information

  • Pool: Yes
  • Pool Description: In-Ground, Private

Parking

  • Garage: Yes
  • Garage Spaces: 3

Location

  • County: Los Angeles
  • Driving Directions: Diamond bar blvd and cold spring lane

School Information

  • School District: Walnut Valley Unified
  • Elementary School: CASROC
  • Middle School: SOUPOI
  • High School: DIABAR

Community

  • Community Features: Sidewalks

Heating & Cooling

  • Cooling Type: Central Air
  • Heating Type: Central

Utilities

  • Sewer: Public Sewer
  • Water: Public

Structural Information

  • Structure Type: Single Family Residence
  • Common Walls: No Common Walls
  • Entry Location: 1
  • Stories/Levels: Two
  • Stories Description: Two
  • Square Feet: 2,712
  • Sq. Ft. Source: Assessor
  • Year Built: 1977
  • Year Built Source: Public Records

Lot Features

  • Property View: Mountain(s), City Lights
  • Lot Size (Acres): 0.3271
  • Lot Size (Sq. Ft.): 14,248
  • Lot Size Source: Assessor
  • Lot Description: Front Yard, Back Yard

Financial Considerations

  • Price Per Sq. Ft.: $582.6

Disclosures and Reports

  • Special Conditions: Standard
  • Inclusions: two Tesla Wall charger

Listed by Wetrust Realty, ALLEN SHI

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Listing agent

— 21504 Cold Spring —

  • ALLEN SHI

    Wetrust Realty

626-202-8703

Get Pre-Approved Today

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Schools serving 21504 Cold Spring

School District:Walnut Valley Unified School District
NameGradesDistance
Castle Rock Elementary School, Diamond Bar, CA
2975 Castlerock Road, Diamond Bar, CA 91765
K-50.4 mi
South Pointe Middle School
20671 Larkstone Drive, Walnut, CA 91789
6-81.8 mi
Diamond Bar High School
21400 Pathfinder Road, Diamond Bar, CA 91765
9-120.9 mi
Disclaimer: School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 21504 Cold Spring Get Price Alerts and Save Property

Date
Details
Price
Change
Source
5/30/2026
Listed
$1,580,000
125.71%
MLS
1/03/2012
Sold
$700,000
—
Public Record
Get Price Alerts and Save Property
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Tax History for 21504 Cold Spring

Year
Property Taxes
Change
Tax Assessment
Change
2025
$11,512
9%
$883,710
4%
2023
$10,599
3%
$849,396
2%
2022
$10,333
2%
$832,743
2%
2021
$10,140
1%
$816,416
1%
2020
$10,012
2%
$808,046
2%
2019
$9,822
4%
$792,203
2%
2018
$9,412
5%
$776,671
2%
2017
$8,982
3%
$761,444
2%
2016
$8,715
-1%
$746,514
2%
2015
$8,769
—
$735,301
2%
2014
$8,779
1%
$720,898
—
2013
$8,710
—
$717,641
—
View All
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

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*These costs are estimates, and the interest rates assume exceptional credit standing.

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Listed by Wetrust Realty, ALLEN SHI

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21504 Cold Spring, Diamond Bar, CA 91765 (MLS# WS26113219) is a Single Family property with 4 bedrooms and 3 full bathrooms. 21504 Cold Spring is currently listed for $1,580,000 and was received on May 30, 2026. Want to learn more about 21504 Cold Spring? Do you have questions about finding other Single Family real estate for sale in Diamond Bar? You can browse all Diamond Bar real estate or contact a Coldwell Banker agent to request more information.

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