1822 Diamond Knoll Lane, Diamond Bar, CA 91765

Single-Family · For sale · $3,990,000 · MLS# TR25029175

Single-Family for sale in Southern California — $3,990,000. 6 beds · 7 baths · 6,726 sqft. Nestled in the prestigious enclave of The Country Estates, this stunning custom estate embodies refined luxury and timeless elegance. Sprawling over 6,726 square feet of meticulously designed living space, this two-st…

1822 Diamond Knoll Lane
For sale

$3,990,000

1822 Diamond Knoll Lane, Diamond Bar, CA 91765

6beds
7baths
6,726sqft
Single-FamilyProperty type
1994Year built
0.94 acresLot size
6,726 sqftLiving area
$593/sqftPrice / sqft
$350/moHOA
4 spacesGarage

Facts & features

Interior

Bedrooms & bathrooms

  • Bedrooms: 6
  • Bathrooms: 7
  • Full bathrooms: 7

Heating

  • Heating: Central, Fireplaces

Cooling

  • Cooling: Central Air, See Remarks

Appliances

  • Included: Six Burner Stove, Built In Range, Double Oven, Dishwasher, Freezer, Gas Cooktop, Disposal, Gas Oven, Gas Range, Gas Water Heater, Microwave, Refrigerator, Range Hood, Vented Exhaust Fan, Water Heater, Warming Drawer
  • Laundry: Washer Hookup, Gas Dryer Hookup, Inside, Laundry Room, See Remarks

Interior area

  • Living area: 6,726 sqft

Property

Parking

  • Total parking spaces: 4
  • Garage spaces: 4

Lot

  • Lot size: 0.94 acres

Features

  • Pool features: In Ground, Private, Association
  • View: City Lights, Hills, Mountains, Neighborhood, Panoramic

Construction

Type & style

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

Condition

  • Year built: 1994

Community & HOA

Community

  • Has HOA: Yes
  • HOA fee: $350/mo

Financial & listing details

  • Days on market: 525 days
  • Price / sqft: $593
  • Status: Active
  • MLS#: TR25029175

Location

  • City: Diamond Bar
  • ZIP: 91765

About this home

Nestled in the prestigious enclave of The Country Estates, this stunning custom estate embodies refined luxury and timeless elegance. Sprawling over 6,726 square feet of meticulously designed living space, this two-story masterpiece offers six spacious bedrooms and seven exquisite bathrooms, ensuring ample room for both lavish entertaining and intimate family living. Upon entering the grand formal entryway, visitors are greeted by soaring ceilings, striking marble and hardwood floors, and an ambiance of stunning sophistication. The home's layout is thoughtfully arranged with an oversized living room, a gracious formal living area, and a welcoming family room that radiates warmth and charm. Every detail has been carefully curated and updated, from the entirely re-piped systems to the modernized, luxurious bathrooms. The gourmet kitchen is a chef's dream, equipped with top-of-the-line built-in appliances, a generous walk-in pantry, and elegant finishes that promise both functionality and style. Each spacious bedroom suite, including a lush primary retreat, provides a serene sanctuary with refined touches that enhance the sense of calm and comfort. The primary bedroom is spacious, completed with a fireplace, huge walk-in closet, covered viewing deck, marbled bathroom with large vanity, dual sinks, walk-in shower, separate soaking tub, private commode, and magnificent views. Beyond the interior, the property truly shines. Step outside into a breathtaking landscape designed for entertaining and relaxation. The expansive grounds feature a private putting green, a sparkling pool and spa, and a charming gazebo, all set against a backdrop of mesmerizing panoramic city lights and majestic mountain views. The park-like setting offers a peaceful escape, making it the perfect venue for both lively gatherings and quiet evenings under the stars. This beautiful and functional custom estate is more than a simple home, it is a statement of luxury, comfort, and impeccable taste in one of the most coveted communities.

Listing updated: June 17, 2026 at 6:58 PM

Listed by: Diana Cheng, Country Queen Real Estate

Source: CRMLS, MLS#: TR25029175, Originating MLS: California Regional MLS

Location

Explore parks, streets, and what's around this home.

Diamond Bar

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Facts & features

Interior

Bedrooms & bathrooms

  • Bedrooms: 6
  • Bathrooms: 7
  • Full bathrooms: 7

Heating

  • Heating: Central, Fireplaces

Cooling

  • Cooling: Central Air, See Remarks

Appliances

  • Included: Six Burner Stove, Built In Range, Double Oven, Dishwasher, Freezer, Gas Cooktop, Disposal, Gas Oven, Gas Range, Gas Water Heater, Microwave, Refrigerator, Range Hood, Vented Exhaust Fan, Water Heater, Warming Drawer
  • Laundry: Washer Hookup, Gas Dryer Hookup, Inside, Laundry Room, See Remarks

Interior area

  • Living area: 6,726 sqft

Property

Parking

  • Total parking spaces: 4
  • Garage spaces: 4

Lot

  • Lot size: 0.94 acres

Features

  • Pool features: In Ground, Private, Association
  • View: City Lights, Hills, Mountains, Neighborhood, Panoramic

Construction

Type & style

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

Condition

  • Year built: 1994

Community & HOA

Community

  • Has HOA: Yes
  • HOA fee: $350/mo

Financial & listing details

  • Days on market: 525 days
  • Price / sqft: $593
  • Status: Active
  • MLS#: TR25029175

Location

  • City: Diamond Bar
  • ZIP: 91765

Price history

DateEventPrice
2/08/2025Source: CRMLS, #TR25029175Listed for sale$3,990,000$593/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 2026-06-17 18:58:39 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