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For sale
    • Listed by: Wetrust Realty • ALLEN SHI • Contact: 626-202-8703
    Price cut: $40K (7/29)
    $1,540,000

    21504 Cold Spring Ln, Diamond Bar, CA 91765

    4beds
    2,712sqft
    : 
    $9,707/mo
    Get pre-qualified
    Single Family Residence
    Built in 1977
    0.33 Acres Lot
    $1,509,800 Zestimate®
    $568/sqft
    $-- HOA

    What's special

    PAID OFF Solar System with 32 Panasonic Panels. Two Tesla EV charging stations, 2025 AO Smith electric water heater, a whole-house water softener system, newer roof, and newer A/C. 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. 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.
    69 days
    |
    815
    |
    19
    |

    Likely to sell faster than

    Zillow last checked:

    Listing updated:

    Listed by:

    ALLEN SHI DRE #02045433 626-202-8703,

    Wetrust Realty

    Source: CRMLS,MLS#: WS26113219MLS LogoOriginating MLS: California Regional MLS

      Facts & features

      Interior

      Bedrooms & bathrooms
      • Bedrooms: 4
      • Bathrooms: 3
      • Full bathrooms: 3
      • Main level bathrooms: 1
      • Main level bedrooms: 1
      Rooms
      • Room types: Bathroom, Bedroom, Family Room, Foyer, Kitchen, Laundry, Living Room, Primary Bathroom, Primary Bedroom, Other, Pantry
      Bedroom
      • Features: Bedroom on Main Level
      Bathroom
      • Features: Jack and Jill Bath
      Other
      • Features: Walk-In Closet(s)
      Pantry
      • Features: Walk-In Pantry
      Heating
      • Central
      Cooling
      • Central Air
      Appliances
      • Laundry: Washer Hookup, Gas Dryer Hookup, Laundry Room
      Features
      • Bedroom on Main Level, Entrance Foyer, Jack and Jill Bath, Walk-In Pantry, Walk-In Closet(s)
      • Has fireplace: Yes
      • Fireplace features: Family Room
      • Common walls with other units/homes: No Common Walls
      Interior area
      • Total interior livable area: 2,712 sqft

      Property

      Parking
      • Total spaces: 3
      • Parking features: Garage - Attached
      • Attached garage spaces: 3
      Features
      • Levels: Two
      • Stories: 2
      • Entry location: 1
      • Has private pool: Yes
      • Pool features: In Ground, Private
      • Has view: Yes
      • View description: City Lights, Mountain(s)
      Lot
      • Size: 0.33 Acres
      • Features: Back Yard, Front Yard
      Details
      • Parcel number: 8714002003
      • Special conditions: Standard

      Construction

      Type & style
      • Home type: SingleFamily
      • Property subtype: Single Family Residence
      Condition
      • New construction: No
      • Year built: 1977

      Utilities & green energy

      • Sewer: Public Sewer
      • Water: Public

      Community & HOA

      Community
      • Features: Sidewalks
      Location
      • Region: Diamond Bar

      Financial & listing details

      • Price per square foot: $568/sqft
      • Tax assessed value: $883,710
      • Annual tax amount: $11,512
      • Date on market: 5/30/2026
      • Cumulative days on market: 69 days
      • Listing terms: Cash,Cash to New Loan,Conventional
      • Inclusions: two Tesla Wall charger

        Estimated market value

        $1,509,800

        $1.43M - $1.59M

        $4,898/mo

        Price history

        DateEventPrice
        7/29/2026Price change$1,540,000-2.5%$568/sqft
        Source: CRMLS #WS26113219 Report a problem
        5/30/2026Listed for sale$1,580,000+125.7%$583/sqft
        Source: CRMLS #WS26113219 Report a problem
        1/20/2012Sold$700,000-5.3%$258/sqft
        Source: Public Record Report a problem
        9/13/2011Listed for sale$738,888+150.9%$272/sqft
        Source: Inland Pacific Properties #C11114133 Report a problem
        9/26/1995Sold$294,500-3%$109/sqft
        Source: Public Record Report a problem
        3/28/1995Sold$303,740$112/sqft
        Source: Public Record Report a problem

        Public tax history

        YearProperty taxesTax assessment
        2025$11,512 +5.6%$883,710 +2%
        2024$10,906 +2.9%$866,383 +2%
        2023$10,599 +2.6%$849,396 +2%
        2022$10,333 +1.9%$832,743 +2%
        2021$10,140 +1.3%$816,416 +1%
        2020$10,012 $808,046 +2%
        2019$10,012 +6.4%$792,203 +2%
        2018$9,412 $776,671 +2%
        2017$9,412 +4.8%$761,444 +2%
        2016$8,982 +3.1%$746,514 +1.5%
        2015$8,715 -0.7%$735,301 +2%
        2014$8,779 $720,898 +85.1%
        2012-- $389,497 +2%
        2011-- $381,861 +0.8%
        2010-- $379,008 -0.2%
        2009-- $379,909 +2%
        2008-- $372,461 +2%
        2007-- $365,159 +2%
        2006-- $358,000
        2005-- $358,000 +4%
        2004-- $344,100 +1.9%
        2003-- $337,794 +2%
        2002-- $331,171 +4%
        2000-- $318,313
        Find assessor info on the county website

        Monthly payment

        Est. payment

        Payment breakdown

        Explore the cost of this home by adjusting the details. Changes won't be saved.
        All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.
        HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
        Mortgage interest rates are dependent on a number of factors, including credit score, down payment, and repayment length. Interest rate data provided by Zillow Group Marketplace, Inc. as of 1/1/1970 from various mortgage lenders with which we have lead or other similar arrangements; the Estimated Payment is an average of those rates.
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        Climate risks

        Neighborhood: 91765

        Getting around

        20 / 100
        Car-Dependent
        10 / 100
        Somewhat Bikeable

        Nearby schools

        GreatSchools rating
        Schools provided by the listing agent
        • Elementary: Castle Rock
        • Middle: South Pointe
        • High: Diamond Bar

        Source: CRMLS. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.

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