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22588 Ridge Line Road, Diamond Bar, CA 91765

$6.5M11bd · 13ba · 17,241 sqft
Lot 53,347 sqft•HOA $308/mo•Single Family Residence•
Active
•220d on market•MLS# TR-26059752

Property Description

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.

Features & Amenities

FeeBuilt 2008

Property Details

Land Type
Fee
Year Built
2008
Property Type
Residential
Property Subtype
Single Family Residence
Parking Spaces
10
Garage Spaces
10
Heating
Central, Fireplace(s)
Cooling
Central Air
View
Hills
Flooring
Carpet, Tile
City
Diamond Bar
Zip Code
91765
County
Los Angeles
Listed byReMax 2000 Realty, Amie Chen

Mortgage Calculator

Current Rates

$
$
%
Monthly Payment
$32,867.54
Principal & Interest
Loan Amount
$5,200,000
Total Interest
$6,632,313
Total Payment Over 30 Years
$11,832,313
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 · 5 active · 2 closed

22588 Ridge Line Road, Diamond Bar, CA 91765

Diamond Bar · Single Family Residence

$6.5M
Luxury Tier
Beds
11
Baths
13
Sqft
17,241
Lot
1.22 ac
Year
2008
$/Sqft
$377
Pool: Yes✓
Spa: Yes✓
View: city✓
Garage: 10-car✓

Listed in line with the median closed sale of $6,350,000. Price per sqft ($377) is a 37% discount to closed comps ($596). Closed comps sold at 90% of list — buyers have negotiating leverage. Luxury tier — fewer comparable sales widen the confidence range.

Price Position

Priced below the market — value advantage over the field.

Price advantage
Subject listed at $6.50M· $377/sqft
Total list price
Closed comps
vs closed median $7.00M
−$500K (−7.1%)
Active comps
vs active median $6.50M
$0 (0.0%)
Price per sqft
Closed compsinsufficient comp data
Active comps
vs active avg $/sqft $625
−$248 (−39.7%)

Active Properties (5)

Active Comparables

AddressCityYearBDBTHSqFtLotSzLP/SqFtLPDIMScore
2955 Wagon TrainDiamond Bar198781313,15248,221$494$6.50M4975
2695 Shady Ridge LaneDiamond Bar20096910,46649,639$572$5.99M12967
2868 Shadow Canyon RoadDiamond Bar2021679,73463,564$663$6.45M20761
2855 Oak Knoll DriveDiamond Bar20066711,00061,952$635$6.98M8260
2137 Derringer LaneDiamond Bar2012689,15857,998$763$6.99M9250
Total: 5 · Average6.48.810,70256,274.8$625.4$6.58M111.8
Median10,466$6.50M

Closed Properties (2)

Closed Comparables

AddressCityYearDateBDBTHSqFtLotSzLPSPSP/SqFtSP/LPDIMScore
22883 Canyon View RoadDiamond Bar200411/24/202571010,65869,801$6.20M$5.70M$5350.9212268
22588 Pacific LaneDiamond Bar201806/05/20265810,63843,150$7.88M$7.00M$6580.8910862
Total: 2 · Average6.09.010,64856,475.5$6.35M$6.35M$596.5—115
Median10,658$7.00M$7.00M

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.