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1822 Diamond Knoll Lane, Diamond Bar, CA 91765

$3.99M6bd · 7ba · 6,726 sqft
Lot 40,834 sqft•HOA $350/mo•Single Family Residence•
Active
•610d on market•MLS# TR-25029175

Property Description

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.

Features & Amenities

FeeBuilt 1994

Property Details

Land Type
Fee
Year Built
1994
Property Type
Residential
Property Subtype
Single Family Residence
Parking Spaces
4
Garage Spaces
4
Heating
Central, Fireplace(s)
Cooling
Central Air, See Remarks
View
City Lights, Hills, Mountain(s), Panoramic
Flooring
Wood, See Remarks
Roof
Tile
City
Diamond Bar
Zip Code
91765
County
Los Angeles
Listed byCountry Queen Real Estate, Diana Cheng

Mortgage Calculator

Current Rates

$
$
%
Monthly Payment
$20,175.61
Principal & Interest
Loan Amount
$3,192,000
Total Interest
$4,071,220
Total Payment Over 30 Years
$7,263,220
This calculator provides estimates only. Actual mortgage payments may include taxes, insurance, HOA fees, and PMI. Contact a lender for accurate quotes.

Comparative Market Analysis

Luxury Tier · 3 active · 4 closed

1822 Diamond Knoll Lane, Diamond Bar, CA 91765

Diamond Bar · Single Family Residence

$3.99M
Luxury Tier
Beds
6
Baths
7
Sqft
6,726
Lot
40,834 sqft
Year
1994
$/Sqft
$593
Pool: Yes✓
Spa: Yes✓
View: city✓
Garage: 4-car✓

Listed 30.9% above the median closed sale of $3,047,500. Price per sqft ($593) is a 30% premium to closed comps ($455). Closed comps sold at 92% of list — buyers have negotiating leverage. Luxury tier — fewer comparable sales widen the confidence range.

Price Position

Positioned above the market — commands a premium.

Premium
Subject listed at $3.99M· $593/sqft
Total list price
Closed comps
vs closed median $3.35M
+$640K (+19.1%)
Active comps
vs active median $3.98M
+$10K (+0.3%)
Price per sqft
Closed compsinsufficient comp data
Active comps
vs active avg $/sqft $580
+$13 (+2.2%)

Active Properties (3)

Active Comparables

AddressCityYearBDBTHSqFtLotSzLP/SqFtLPDIMScore
22189 Rim Fire LaneDiamond Bar2005566,35244,826$627$3.98M49276
2540 Crow Foot LaneDiamond Bar1997457,19555,426$709$5.10M21554
2145 Indian CreekDiamond Bar1980536,14489,139$405$2.49M1143
Total: 3 · Average4.74.76,563.66763,130.333$580.333$3.86M239.33333333333334
Median6,352$3.98M

Closed Properties (4)

Closed Comparables

AddressCityYearDateBDBTHSqFtLotSzLPSPSP/SqFtSP/LPDIMScore
2250 Indian CreekDiamond Bar200306/18/2026697,45658,232$3.68M$3.35M$4490.91470
689 Leyland DriveDiamond Bar199908/25/2026656,34365,166$2.89M$2.75M$4330.955369
2868 Oak Knoll DrDiamond Bar199810/01/2026666,42353,448$3.98M$3.93M$6120.997763
2838 Bentley WayDiamond Bar199609/23/2026667,38560,985$2.90M$2.40M$3250.838457
Total: 4 · Average6.06.56,901.7559,457.75$3.11M$3.11M$454.75—54.5
Median7,385$3.35M$3.35M

Market Analysis

List vs Sale $/SqFt

Sale Price Trend

Days on Market

Sale vs List Price

AI-generated CMA

This analysis was generated automatically from MLS data. For an in-depth, human-reviewed valuation, contact Joseph Sardella at josephsardella@gmail.com.