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For sale
  • Listed by: First Team Real Estate
    $2,680,000

    22621 Ridge Line Rd, Diamond Bar, CA 91765

    4beds
    3,699sqft
    : Get pre-qualified
    Single Family Residence
    Built in 1977
    1.78 Acres Lot
    $2,559,400 Zestimate®
    $725/sqft
    $350/mo HOA

    What's special

    Welcome to Your Private Hilltop Sanctuary. Nestled within Diamond Bar’s highly prestigious, 24-hour guard-gated community of The Country Estates, this fully reimagined masterpiece offers a rare blend of classic curb appeal and breathtaking, ultra-modern design. Shielded by mature landscaping, this estate invites you to experience a lifestyle defined by uncompromising luxury, sweeping valley sunsets, and sparkling city-light views. Step through the illuminated entryway into a sun-drenched, open-concept floor plan beautifully anchored by custom vertical wood-slat architectural paneling, wide-plank oak-toned flooring, and brilliant crystal chandeliers. The gourmet chef’s kitchen is an entertainer's dream, featuring a massive quartz waterfall island and a farmhouse sink, flowing seamlessly into a formal dining space warmed by a marble-clad fireplace. You can effortlessly host guests in the formal living room with its built-in beverage center, or find your daily peace in the dedicated, window-lined Zen lounge. Ascending the striking glass-framed staircase reveals a sprawling upper-level entertainment loft alongside a dedicated billiard room with private deck access. For the modern professional, a refined executive office offers a quiet workspace complete with custom solid-wood built-ins and glass-paned French doors. The primary suite is a true resort-style retreat designed to capture unobstructed hilltop horizon views. Its spa-caliber en-suite rivals five-star hotels, appointed with a deep freestanding soaking tub, a frameless glass rainfall shower, brushed gold fixtures, and a massive custom walk-in closet. Generously sized secondary bedrooms offer VIP treatment with bespoke board-and-batten woodwork, while the pristine guest baths feature designer finishes, and high-tech smart bidets. The perfection extends to a fully finished, expansive garage featuring pristine epoxy flooring, custom dark-oak cabinetry, and an integrated luxury laundry center. Step outside to the modern, cable-railed view decks for al fresco dining under the stars, seamlessly expanding your living space into the California golden hour. Residents of The Country Estates including a massive indoor sports complex, pristine clay and hard tennis courts, pickleball, a community pool, and miles of scenic equestrian trails. Zoned for the award-winning Walnut Valley Unified School District, this estate is more than just a stunning residence—it is a legacy property.
    36 days
    |
    1,360
    |
    53
    |

    Zillow last checked:

    Listing updated:

    Listing Provided by:

    Minh Nguyen DRE #02150518 tminhtriet25@gmail.com,

    First Team Real Estate

    Source: CRMLS,MLS#: PW26087846MLS LogoOriginating MLS: California Regional MLS

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      Facts & features

      Interior

      Bedrooms & bathrooms
      • Bedrooms: 4
      • Bathrooms: 4
      • Full bathrooms: 4
      • Main level bathrooms: 2
      • Main level bedrooms: 3
      Rooms
      • Room types: Exercise Room, Kitchen, Living Room, Office, Other, Dining Room
      Bathroom
      • Features: Bathroom Exhaust Fan, Bathtub, Dual Sinks, Remodeled, Separate Shower
      Kitchen
      • Features: Kitchen Island, Remodeled, Updated Kitchen
      Other
      • Features: Walk-In Closet(s)
      Heating
      • Central
      Cooling
      • Central Air
      Appliances
      • Included: Dishwasher, Electric Cooktop, Microwave, Refrigerator, Water Heater, Dryer, Washer
      • Laundry: In Garage
      Features
      • Separate/Formal Dining Room, Furnished, High Ceilings, Walk-In Closet(s)
      • Flooring: Vinyl
      • Has fireplace: Yes
      • Fireplace features: Dining Room, Family Room, Living Room
      • Furnished: Yes
      • Common walls with other units/homes: 1 Common Wall
      Interior area
      • Total interior livable area: 3,699 sqft

      Property

      Parking
      • Total spaces: 4
      • Parking features: Driveway, Garage
      • Attached garage spaces: 4
      Accessibility
      • Accessibility features: Safe Emergency Egress from Home, Parking
      Features
      • Levels: Three Or More
      • Stories: 3
      • Entry location: 2
      • Pool features: Association
      • Has view: Yes
      • View description: City Lights, Canyon, Hills, Mountain(s), Panoramic, Valley, Trees/Woods
      Lot
      • Size: 1.78 Acres
      • Features: 0-1 Unit/Acre, Lot Over 40000 Sqft
      Details
      • Parcel number: 8713006023
      • Zoning: LCR140000*
      • Special conditions: Standard

      Construction

      Type & style
      • Home type: SingleFamily
      • Property subtype: Single Family Residence
      • Attached to another structure: Yes
      Condition
      • Updated/Remodeled,Turnkey
      • New construction: No
      • Year built: 1977

      Utilities & green energy

      • Sewer: Public Sewer
      • Water: Public
      • Utilities for property: Electricity Available, Natural Gas Available, Sewer Available, Water Available

      Community & HOA

      Community
      • Features: Street Lights, Sidewalks, Gated
      • Security: Carbon Monoxide Detector(s), Gated Community, Gated with Attendant, Smoke Detector(s)
      HOA
      • Has HOA: Yes
      • Amenities included: Sport Court, Other Courts, Pickleball, Pool, Guard, Security, Tennis Court(s)
      • HOA fee: $350 monthly
      • HOA name: Dimond Bar County Estates Association
      • HOA phone: 909-531-5854
      Location
      • Region: Diamond Bar

      Financial & listing details

      • Price per square foot: $725/sqft
      • Tax assessed value: $1,783,300
      • Annual tax amount: $22,276
      • Date on market: 4/24/2026
      • Cumulative days on market: 37 days
      • Listing terms: Cash,Conventional,FHA,VA Loan
      • Inclusions: All Furnitures and Appliances
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        Estimated market value

        $2,559,400

        $2.43M - $2.69M

        $4,941/mo

        Price history

        DateEventPrice
        4/24/2026Listed for sale$2,680,000-2.5%$725/sqft
        Source: CRMLS #PW26087846 Report a problem
        10/8/2025Listing removed$2,749,000$743/sqft
        Source: SDMLS #PW25120510 Report a problem
        6/28/2025Listed for sale$2,749,000+96.4%$743/sqft
        Source: SDMLS #PW25120510 Report a problem
        2/28/2024Sold$1,400,000$378/sqft
        Source: Public Record Report a problem

        Public tax history

        YearProperty taxesTax assessment
        2025$22,276 +313%$1,783,300 +362.1%
        2024$5,394 +4.1%$385,925 +2%
        2023$5,180 +3.1%$378,359 +2%
        2022$5,025 +2.1%$370,941 +2%
        2021$4,922 +1.2%$363,669 +1%
        2020$4,861 $359,941 +2%
        2019$4,861 +5.9%$352,884 +2%
        2018$4,591 $345,966 +2%
        2017$4,591 +4.4%$339,183 +2%
        2016$4,397 +3.5%$332,533 +1.5%
        2015$4,250 -1.8%$327,539 +2%
        2014$4,327 $321,124 +2.5%
        2012-- $313,407 +2%
        2011-- $307,262 +0.8%
        2010-- $304,966 -0.2%
        2009-- $305,691 +2%
        2008-- $299,698 +2%
        2007-- $293,823 +2%
        2006-- $288,063
        2005-- $288,063 +4%
        2004-- $276,879 +1.9%
        2003-- $271,805 +2%
        2002-- $266,476 +4%
        2000-- $256,131

        Find assessor info on the county website

        Monthly payment

        Est. payment

          Payment breakdown

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          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

          1 / 100
          Car-Dependent
          2 / 100
          Somewhat Bikeable

          Nearby schools

          GreatSchools rating

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