$7,990,000 - 22588 Ridge Line Road, Diamond Bar

  • 11Beds
  • 13Baths
  • 17,241SQ. Feet
  • 1.22Acres

Diamond Bar Home For Sale

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.

Sales Agent

Sam Smith
  • Sam Smith
  • San Clemente Realtor ®
  • Phone: 949-204-5110
  • Cell: 949-204-5110
  • Contact Agent Now

Amenities

  • AmenitiesClubhouse, Sport Court, Horse Trails, Management, Barbecue, Picnic Area, Playground, Pickleball, Pool, Guard, Spa/Hot Tub, Tennis Court(s), Trail(s), Security
  • Parking Spaces10
  • ParkingDirect Access, Driveway, Garage, Garage Faces Side, Oversized, Private
  • # of Garages10
  • GaragesDirect Access, Driveway, Garage, Garage Faces Side, Oversized, Private
  • ViewHills
  • Has PoolYes
  • PoolCommunity, In Ground, Private, Association, Fenced
  • SecurityGated with Guard, Gated Community, Gated with Attendant, 24 Hour Security

School Information

  • DistrictWalnut Valley Unified

Essential Information

  • MLS® #TR26059752
  • Price$7,990,000
  • Bedrooms11
  • Bathrooms13.00
  • Full Baths11
  • Half Baths2
  • Square Footage17,241
  • Acres1.22
  • Year Built2008
  • TypeResidential
  • Sub-TypeSingle Family Residence
  • StatusActive
  • Listing AgentAmie Chen
  • Listing OfficeReMax 2000 Realty

Exterior

  • Exterior FeaturesBarbecue
  • Lot DescriptionZeroToOneUnitAcre, Lot Over 40000 Sqft, Landscaped, Sprinkler System

Additional Information

  • Date ListedMarch 27th, 2026
  • Days on Market27
  • Short SaleN
  • RE / Bank OwnedN

Community Information

  • Address22588 Ridge Line Road
  • Area616 - Diamond Bar
  • CityDiamond Bar
  • CountyLos Angeles
  • Zip Code91765

Interior

  • InteriorCarpet, Tile
  • Interior FeaturesWet Bar, Balcony, Crown Molding, Cathedral Ceiling(s), Elevator, Granite Counters, High Ceilings, Multiple Staircases, Open Floorplan, Pantry, Stone Counters, Recessed Lighting, Storage, Two Story Ceilings, Bar, Wired for Sound, Bedroom on Main Level, Entrance Foyer, Central Vacuum, Intercom, Partially Furnished
  • AppliancesBuilt-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
  • HeatingCentral, Fireplace(s), Natural Gas
  • CoolingCentral Air
  • FireplaceYes
  • FireplacesLiving Room
  • # of Stories3
  • StoriesMulti/Split

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  • City:
    Diamond Bar
  • Price Range:
    $299,500 - $7,990,000
  • Current Listings:
    139
  • HOA Dues:
    $236
  • Average Price per Square Foot:
    $566

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Based on information from California Regional Multiple Listing Service, Inc. as of April 23rd, 2026 at 7:15am PDT. This information is for your personal, non-commercial use and may not be used for any purpose other than to identify prospective properties you may be interested in purchasing. Display of MLS data is usually deemed reliable but is NOT guaranteed accurate by the MLS. Buyers are responsible for verifying the accuracy of all information and should investigate the data themselves or retain appropriate professionals. Information from sources other than the Listing Agent may have been included in the MLS data. Unless otherwise specified in writing, Broker/Agent has not and will not verify any information obtained from other sources. The Broker/Agent providing the information contained herein may or may not have been the Listing and/or Selling Agent.