22588 Ridge Line Road, Diamond Bar, CA 91765

Single-Family · For sale · $6,990,000 · MLS# TR26059752

Single-Family for sale in Southern California — $6,990,000. 11 beds · 13 baths · 17,241 sqft. 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 powd…

22588 Ridge Line Road
For sale

$6,990,000

22588 Ridge Line Road, Diamond Bar, CA 91765

11beds
13baths
17,241sqft
Single-FamilyProperty type
2008Year built
1.22 acresLot size
17,241 sqftLiving area
$405/sqftPrice / sqft
$308/moHOA
10 spacesGarage

Facts & features

Interior

Bedrooms & bathrooms

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

Heating

  • Heating: Central, Fireplaces, Natural Gas

Cooling

  • Cooling: Central Air

Appliances

  • Included: 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
  • Laundry: Inside, Laundry Room, Upper Level

Interior area

  • Living area: 17,241 sqft

Property

Parking

  • Total parking spaces: 10
  • Garage spaces: 10

Lot

  • Lot size: 1.22 acres

Features

  • Pool features: Community, Fenced, In Ground, Private, Association
  • View: Hills

Construction

Type & style

  • Home type: Single-Family
  • Property subtype: Single Family Residence

Condition

  • Year built: 2008

Community & HOA

Community

  • Has HOA: Yes
  • HOA fee: $308/mo

Financial & listing details

  • Days on market: 113 days
  • Price / sqft: $405
  • Status: Active
  • MLS#: TR26059752

Location

  • City: Diamond Bar
  • ZIP: 91765

About this home

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.

Listing updated: June 15, 2026 at 2:39 PM

Listed by: Amie Chen, ReMax 2000 Realty

Source: CRMLS, MLS#: TR26059752, Originating MLS: California Regional MLS

Location

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Diamond Bar

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Facts & features

Interior

Bedrooms & bathrooms

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

Heating

  • Heating: Central, Fireplaces, Natural Gas

Cooling

  • Cooling: Central Air

Appliances

  • Included: 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
  • Laundry: Inside, Laundry Room, Upper Level

Interior area

  • Living area: 17,241 sqft

Property

Parking

  • Total parking spaces: 10
  • Garage spaces: 10

Lot

  • Lot size: 1.22 acres

Features

  • Pool features: Community, Fenced, In Ground, Private, Association
  • View: Hills

Construction

Type & style

  • Home type: Single-Family
  • Property subtype: Single Family Residence

Condition

  • Year built: 2008

Community & HOA

Community

  • Has HOA: Yes
  • HOA fee: $308/mo

Financial & listing details

  • Days on market: 113 days
  • Price / sqft: $405
  • Status: Active
  • MLS#: TR26059752

Location

  • City: Diamond Bar
  • ZIP: 91765

Price history

DateEventPrice
5/20/2026Source: CRMLS, #TR26059752Price change$6,990,000$405/sqft-12.5%
3/27/2026Source: CRMLS, #TR26059752Listed for sale$7,990,000$463/sqft
California Regional Multiple Listing Service (CRMLS)

The multiple listing data appearing on this website, or contained in reports produced therefrom, is owned and copyrighted by California Regional Multiple Listing Service, Inc. ("CRMLS") and is protected by all applicable copyright laws. Information provided is for viewer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties the viewer may be interested in purchasing. All listing data, including but not limited to square footage and lot size is believed to be accurate, but the listing Agent, listing Broker and CRMLS and its affiliates do not warrant or guarantee such accuracy. The viewer should independently verify the listed data prior to making any decisions based on such information by personal inspection and/or contacting a real estate professional.

Based on information from California Regional Multiple Listing Service, Inc. as of 2026-06-15 14:39:32 PDT and /or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information