21504 Cold Spring Ln

2,712 Sq. Ft.
$583 / Sq. Ft.
2,712
Sq. Ft.
$583
per Sq. Ft.

Description

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...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.
  1. Listed by ALLEN SHI • DRE #02045433 • Brokerage DRE #02125613 • Wetrust Realty • 626-202-8703

Property Details for 21504 Cold Spring Lane

View
Mountain(s), City Lights
Parking Spaces Total
3
Private Pool
Yes
Cooling Type
Central Air
Total Units
1.0
Building Type
Detached
Lot Size Source
Assessor
Living Area
2712
LISTING UPDATED: 05/31/2026 10:45 AM

Property Details for 21504 Cold Spring Lane

StatusActive
MLS #WS26113219
Days on Market4
Taxes-
HOA Fees-
Condo/Co-op Fees-
Property TypeSingle Family
MLS TypeResidential / Single Family Residence
Year Built1977
Lot Size0.33 AC / 14,248 SF
CountyLos Angeles County

Location

Listing Courtesy of Wetrust Realty, ALLEN SHI, DRE #02045433
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Building Information for 21504 Cold Spring Lane

Stories2Year Built1977Building Size-Lot Size0.33 AC / 14,248 SF

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$8,832 per month

30 year fixed, 6.36% Interest

Principal and Interest

$7,873

Property Taxes

$959

HOA Dues

$0

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Property Information for 21504 Cold Spring Lane

Income / Expense / Tax Details
Tax / Assessment Info
  • Tax Tract Number: 32974
  • CFD/Mello-Roos Fee: $0
  • Tax Lot: 1
Community / Development
Community / Development
  • Assessments YN: Yes
  • Assessments: Special Assessments
  • Community Features: Sidewalks
Property / Structure Info
Interior Features
  • Room Type: Jack & Jill, Walk-In Closet, Primary Bedroom, Walk-In Pantry, Laundry, Foyer, Kitchen, Living Room, Main Floor Bedroom, Family Room, Primary Bathroom
  • Main Level Bathrooms: 1
  • Main Level Bedrooms: 1
  • Bedroom Features: Main Floor Bedroom, WalkInCloset
  • Laundry: Yes
  • Laundry Features: Gas Dryer Hookup, Individual Room, Washer Hookup
  • Laundry Location: Gas, Washer Hookup
  • Laundry Utilities: Gas, Washer Hookup
  • Fireplace Features: Family Room
  • Fireplace Rooms: Family Room
  • Fireplace: FP in Family Room
  • Cooling: Central Air
  • Heating Type: Central
  • Heating: Central
  • Heat Equipment: Forced Air Unit
Exterior Features
  • Entry Location: 1
  • Structure Type: House
  • View Description: City Lights
  • Pool Features: In Ground, Private
  • Pool Description: In Ground, Private
  • Pool: Below Ground, Private
  • Pool Heat: Below Ground, Private
Land/Lot Info
  • Sign on Property: Yes
  • Lot Features: Front Yard, Back Yard
  • Lease Considered: No
  • Available For Lease: No
  • Land Lease: No
  • Land Lease Type: Fee
  • Levels: Two
  • Water: Public
  • Sewer: Public Sewer
  • Sewer/Septic: Public Sewer
  • Water Source: Public
Parking Info
  • Garage Spaces: 3
  • Parking Garage Spaces: 3
  • Carport Spaces: 0
  • Attached Garage: Yes
Property / Structure Info
  • Residential Styles: Detached
  • Residential Unit Location: No Common Walls

Property History for 21504 Cold Spring Lane

DateEvent & SourcePriceAppreciation
May 30, 2026

Listed (Active)

CRMLS #WS26113219

$1,580,000—
May 25, 2026

Listed (Active)

CLAW #WS26113219MR

$1,580,000—
May 25, 2026

Listed (Active)

SDMLS #WS26113219

$1,580,000—
DateEvent & SourcePrice
05/30/2026

Listed (Active)

CRMLS #WS26113219

$1,580,000
05/25/2026

Listed (Active)

CLAW #WS26113219MR

$1,580,000
05/25/2026

Listed (Active)

SDMLS #WS26113219

$1,580,000

For completeness, we often displays two records for one sale: the MLS record and the public record.

Public Records for 21504 Cold Spring Lane

Taxable ValueLand$431,324Additions$452,386Total$883,710
Tax Record2025$11,512 ($959 / month)
Home Facts
Beds3Total Finished SqFt2,712 SqFtAbove Grade Finished SqFt2,712 SqFtLot Size14,292 SqFtStyleSingle Family ResidenceYear Built1977ZoningLCR19000*CountyLOS ANGELESAPN8714-002-003

Schools near 21504 Cold Spring Lane

This home is within Walnut Valley Unified School District.
Rating
School
Type
Grades
Distance
Public - K to 5
Public - 6 to 8
Public - 9 to 12
Public - 9 to 12
Rating
School
Distance
Castle Rock Elementary School
PublicK to 5

South Pointe Middle School
Public6 to 8

Diamond Bar High School
Public9 to 12

School ratings and boundaries are provided by GreatSchools.org and Pitney Bowes. This information should only be used as a reference. Proximity or boundaries shown here are not a guarantee of enrollment. Please reach out to schools directly to verify all information and enrollment eligibility.

Similar Homes

21504 Cold Spring Lane is a single family home for sale in Diamond Bar, CA 91765. This property was listed for sale on May 25, 2026 by Wetrust Realty, it's currently listed at $1,580,000. It has been on the market for a total of 4 days and was last sold on January 20, 2012. This listing's school district is Walnut Valley Unified School District. Nearby schools include Castle Rock Elementary School, South Pointe Middle School and Diamond Bar High School. 21504 Cold Spring Lane is a 4-bed, 3-bath, 2,712 sqft single family home built in 1977.

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Listing Courtesy of Wetrust Realty, ALLEN SHI, DRE #02045433

Based on information from one of the following Multiple Listing Services: CRMLS, CLAW, I-Tech, ROWMLS, GPSMLS, SDMLS, VCRDS/PFAR, Idyllwild Association of Realtors, Ojai Valley Board of REALTORS and/or AVMLS. Information being provided is for the visitor’s personal, noncommercial use and may not be used for any purpose other than to identify prospective properties visitor may be interested in purchasing. The data contained herein is copyrighted by CRMLS, CLAW, I-Tech, ROWMLS, GPSMLS, SDMLS, VCRDS/PFAR, Idyllwild Association of Realtors, Ojai Valley Board of REALTORS and/or AVMLS is protected by all applicable copyright laws. Any dissemination of this information is in violation of copyright laws and is strictly prohibited. Property information referenced on this web site comes from the Internet Data Exchange (IDX) program of the MLS. This web site may reference real estate listing(s) held by a brokerage firm other than the broker and/or agent who owns this web site. For the avoidance of doubt, the accuracy of all information, regardless of source, is deemed reliable but not guaranteed and should be personally verified through personal inspection by and/or with the appropriate professionals.