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21504 Cold Spring LaneDiamond Bar, CA 91765

Single Family · 4 Beds · 3 Full Baths · 2,712 Sq. ft. | 0.33 Acres
$1,580,000 Active

21504 Cold Spring Lane Overview

Time on Site:
31 days
Visits:
0

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.

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21504 Cold Spring Lane Facts & Features

  • Type Single Family
  • Sq. ft. 2,712
  • Price/Sq.ft. $583
  • Lot 0.33 Acres

Details

General

Association/HOA

  • Association: No
  • Common Interest: None

School Information

  • School District: Walnut Valley Unified
  • Elementary School: Castle Rock
  • Middle Or Junior School: South Pointe
  • High School: Diamond Bar

Building Information

  • New Construction: No
  • Year Built: 1977

Location/Region

  • Country: US
  • County Or Parish: Los Angeles
  • MLS Area Major: 616 - Diamond Bar
  • Postal City: DIAMOND BAR

Community/Development

  • Community Features: Sidewalks

Rent/Lease Information

  • Land Lease: No
  • Lease Considered: No

General Information

  • Inclusions: two Tesla Wall charger
  • Listing Terms: Cash,Cash to New Loan,Conventional
  • Parcel Number: 8714002003
  • Property Sub Type: Single Family Residence
  • Property Type: Residential
  • Senior Community: No
  • Special Listing Conditions: Standard

Interior

Parking Information

  • Garage Spaces: 3.0
  • Garage: Yes

Beds/Baths

  • Bathrooms Full: 3
  • Bathrooms Total: 3
  • Bedrooms Total: 4

General Information

  • Common Walls: No Common Walls
  • Entry Level: 1
  • Entry Location: 1
  • Fireplace Features: Family Room
  • Fireplace: Yes
  • Interior Features: Bedroom on Main Level,Entrance Foyer,Jack and Jill Bath,Walk-In Pantry,Walk-In Closet(s)
  • Laundry Features: Washer Hookup,Gas Dryer Hookup,Laundry Room
  • Levels: Two
  • Living Area: 2712.0
  • Living Area Source: Assessor
  • Living Area Units: Square Feet
  • Main Level Bathrooms: 1
  • Main Level Bedrooms: 1
  • Stories: 2
  • Stories Total: 2

Exterior

Parking Information

  • Parking Total: 3.0

Lot Information

  • Additional Parcels: No
  • Lot Features: Back Yard,Front Yard
  • Lot Size Acres: 0.3271
  • Lot Size Area: 14248.0
  • Lot Size Source: Assessor
  • Lot Size Square Feet: 14248.0
  • Lot Size Units: Square Feet
  • Elevation Units: Feet
  • Water Source: Public

Waterfront/View

    Building Exterior/Construction

    • Attached Garage: Yes
    • Property Attached: No
    • Structure Type: House

    General Information

    • Number Of Units Total: 1
    • Pool Features: In Ground,Private
    • Pool Private: Yes
    • Sewer: Public Sewer

    21504 Cold Spring Lane Neighborhood

    Community

    91765 (DIAMOND BAR) Demographics

    44
    Median Age
    2,444
    Population Density (per sq. mile)
    63%
    College Educated
    $101,161
    Estimated Median Income
    11,360
    Estimated Total Home Owners
    3,514
    Estimated Total Renters
    76% / 24%
    Estimated Owner / Renter Divide
    3
    Estimated Average Household Size
    Community data courtesy of LiveBy, Inc.

    Schools

    School data courtesy of LiveBy, Inc. School ratings are based on a scale of 1-5, with 5 being the highest rating and 1 being the lowest rating.

    21504 Cold Spring Lane Monthly Cost

    $
    $ %
    %
    $
    $
    * All calculations are estimates and provided by Reliance Network, for informational purposes only. Actual amounts may vary. ** Assumes 6.50% APR, 20% down payment, and conventional 30-year fixed rate first mortgage. Rates cited are for instructional purposes only; current rates are subject to change at any time without notice. You should not make any decisions based simply on the information provided. Additional required amounts such as taxes, insurance, homeowner association dues, assessments, mortgage insurance premiums, flood insurance or other such required payments should also be considered. Contact your mortgage company for current rates and additional information. Any mortgage broker or insurance agent that may appear is independent and is not affiliated with, endorsed by, or provided by the MLS.

    21504 Cold Spring Lane Market Data

    Based on the last 30 days in this zip code

    $1,521,743
    Average List Price
    $574
    Average Price per Square Foot
    32
    Properties Sold
    67
    Average Days on Market
    350
    Properties for Sale
    Calculations provided by Reliance Network

    21504 Cold Spring Lane History

    Date Event Value Agent
    5/30/2026Source: CRMLS Added to Database
    May 30, 2026
    Listing provided courtesy of Wetrust RealtyALLEN SHI- MLS# WS26113219MLS ProviderContact Information: [email protected] - 626-587-4866