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22588 Ridge Line RoadDiamond Bar, CA 91765

Single Family · 11 Beds · 11 Full Baths · 2 Half Baths · 17,241 Sq. ft. | 1.22 Acres
$6,990,000 Active

22588 Ridge Line Road Overview

Time on Site:
94 days
Visits:
0

Luxurious 17,000-square-foot mansion located in the renowned “The Country Estates”. This efficiently designed residence features nine generously sized en-suite bedrooms, along with two huge primary suites and two powder rooms on the main level, totaling 11 bedrooms and 13 bathrooms. Situated on approximately 1.2 acres of well-maintained landscaping, the home captures breathtaking views of city lights and scenic hills from multiple vantage points. Upon entry, you’re welcomed by polished marble floors, soaring vaulted ceilings, and an impressive foyer with a dual staircase. The main level open-concept living areas create a bright and inviting atmosphere, ideal for both everyday living and entertaining and are equipped with two powder rooms and a bar area that’s perfect for hosting guests. The gourmet kitchen is designed for both functionality and style, featuring a large island, an oversized butler’s pantry, and additional high-end features to support daily living and entertaining needs. An elevator adds convenience and accessibility throughout the home. The ten-car garage provides ample space for large households or car enthusiasts. Additional interior highlights include a private game room, home theater, and a dedicated meditation room. The backyard offers an Italian villa-inspired retreat, designed for relaxation and complete with a Pool, Spa, BBQ station. Carefully crafted, this home blends refined elegance with everyday comfort. Located in a highly sought-after community with top-rated schools, the HOA includes 24-hour guard-gated security and amenities such as a community pool and spa, tennis courts, a clubhouse, and more. Come experience everything this exceptional property has to offer.

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22588 Ridge Line Road Facts & Features

  • Type Single Family
  • Sq. ft. 17,241
  • Price/Sq.ft. $405
  • Lot 1.22 Acres

Details

General

Association/HOA

  • Association Amenities: Clubhouse,Sport Court,Horse Trail(s),Management,Barbecue,Picnic Area,Playground,Pickleball,Pool,Guard,Spa/Hot Tub,Security,Tennis Court(s),Trail(s)
  • Association Fee: 308.0
  • Association Fee Frequency: Monthly
  • Association Name: Diamond Bar Country Estate
  • Association: Yes
  • Common Interest: None

School Information

  • School District: Walnut Valley Unified

Building Information

  • New Construction: No
  • Year Built: 2008

Location/Region

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

Community/Development

  • Community Features: Curbs,Horse Trails,Suburban,Sidewalks,Gated,Pool

Rent/Lease Information

  • Land Lease: No
  • Lease Considered: No

General Information

  • Listing Terms: Cash,Cash to New Loan
  • Parcel Number: 8713029021
  • Property Sub Type: Single Family Residence
  • Property Type: Residential
  • Senior Community: No
  • Special Listing Conditions: Standard

Interior

Parking Information

  • Garage Spaces: 10.0
  • Garage: Yes

Beds/Baths

  • Bathrooms Full: 11
  • Bathrooms Half: 2
  • Bathrooms Total: 13
  • Bedrooms Total: 11

General Information

  • Accessibility Features: Safe Emergency Egress from Home,Accessible Elevator Installed,Parking
  • Appliances: Built-In Range,Barbecue,Convection Oven,Double Oven,Dishwasher,Freezer,Gas Cooktop,Gas Oven,Gas Range,Gas Water Heater,Microwave,Refrigerator,Range Hood,Vented Exhaust Fan,Water Heater,Warming Drawer,Dryer,Washer
  • Common Walls: No Common Walls
  • Entry Level: 1
  • Entry Location: front door
  • Fireplace Features: Living Room
  • Fireplace: Yes
  • Flooring: Carpet,Tile
  • Interior Features: Wet Bar,Balcony,Crown Molding,Cathedral Ceiling(s),Central Vacuum,Elevator,Granite Counters,High Ceilings,Intercom,Multiple Staircases,Open Floorplan,Pantry,Partially Furnished,Stone Counters,Recessed Lighting,Storage,Two Story Ceilings,Bar,Wired for Sound,Bedroom on Main Level,Entrance Foyer
  • Laundry Features: Inside,Laundry Room,Upper Level
  • Levels: Multi/Split
  • Living Area: 17241.0
  • Living Area Source: Assessor
  • Living Area Units: Square Feet
  • Main Level Bathrooms: 4
  • Main Level Bedrooms: 2
  • Other Equipment: Intercom
  • Security Features: Gated with Guard,Gated Community,Gated with Attendant,24 Hour Security
  • Spa Features: Association,Community,In Ground,Private
  • Spa: Yes
  • Stories Total: 3

Exterior

Parking Information

  • Parking Features: Direct Access,Driveway,Garage,Oversized,Private,Garage Faces Side
  • Parking Total: 10.0

Lot Information

  • Additional Parcels: No
  • Lot Features: 0-1 Unit/Acre,Lot Over 40000 Sqft,Landscaped,Sprinkler System
  • Lot Size Acres: 1.2247
  • Lot Size Area: 53347.0
  • Lot Size Source: Assessor
  • Lot Size Square Feet: 53347.0
  • Lot Size Units: Square Feet
  • Elevation Units: Feet
  • Water Source: Public

Waterfront/View

    Building Exterior/Construction

    • Attached Garage: Yes
    • Patio And Porch Features: Rear Porch,Covered,Front Porch
    • Property Attached: No
    • Structure Type: House

    General Information

    • Exterior Features: Barbecue
    • Horse Amenities: Riding Trail
    • Number Of Units Total: 1
    • Other Structures: Gazebo
    • Pool Features: Community,Fenced,In Ground,Private,Association
    • Pool Private: Yes
    • Sewer: Public Sewer

    22588 Ridge Line Road 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.

    22588 Ridge Line Road Monthly Cost

    $
    $ %
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    $
    $
    * 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.

    22588 Ridge Line Road 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

    22588 Ridge Line Road History

    Date Event Value Agent
    5/20/2026Source: CRMLS Price Reduction
    $6,990,000 -12.5%
    3/27/2026Source: CRMLS Added to Database
    March 27, 2026
    Listing provided courtesy of ReMax 2000 RealtyAmie Chen- MLS# TR26059752MLS ProviderContact Information: 626-956-0188