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$7,990,000 Just Listed

  • For Sale
  • Active
  • Single Family
  • 11 Beds
  • 11 Full Baths
  • 2 Partial Baths
  • 17,241 Sq. Ft.
  • 10 Car Garage
  • Updated 11 hours ago
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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.

Full Property Details for 22588 Ridge Line Rd

General

  • Price: $7,990,000
  • HOA FEE: $308/month
  • Status: Active
  • Type: Single Family
  • Source: MRMLS
  • MLS ID: TR26059752
  • Updated: 3/27/2026
  • Days on Market: 1 days
  • Added to Site: 1 day(s) ago

Interior

  • Rooms/Areas: Primary Bedroom, Recreation, Primary Bathroom, Den, Bonus Room, Foyer, Primary Suite, Projection, Laundry, Main Floor Primary Bedroom, Home Theater, Main Floor Bedroom, Media Room, Two Primaries, Office, Living Room, Walk-In Pantry, Family Room, Formal Entry, Game Room, Guest/Maid's Quarters, Great Room, Entry, Library, Multi-Level Bedroom, Exercise Room, Retreat, Separate Family Room, Walk-In Closet
  • Interior Features: Central Vacuum, Living Room Balcony, Wet Bar, High Ceilings, Granite Counters, Wired for Sound, Elevator, Pantry, Recessed Lighting, Intercom, Partially Furnished, Open Floorplan, Stone Counters, Bar, Cathedral Ceiling(s), Crown Molding, Balcony, 2 Staircases, Two-Story Ceilings, Storage
  • Fireplace: Yes
  • Fireplace(s): Living Room
  • Appliances: Gas Water Heater, Double Oven, Water Heater Central, Gas Oven, Warming Drawer, Convection Oven, Gas Cooktop, Range Hood, Built-In Range, Refrigerator, Barbecue, Freezer, Gas Range, Dishwasher, Vented Exhaust Fan, Microwave, Water Heater
  • Flooring: Tile, Carpet

Rooms

Bathrooms

  • Total Bathrooms: 13
  • Full Bathrooms: 11
  • Half Bathrooms: 2

Bedrooms

  • Total Bedrooms: 11

Other Rooms

  • Laundry: Inside, Individual Room, Upper Level, Washer Included, Dryer Included

Additional Information

  • Shared Amenities: Spa/Hot Tub, Hiking Trails, Picnic Area, Security, Management, Horse Trails, Tennis Court(s), Pickleball, Pool, Barbecue, Clubhouse, Sport Court, Guard, Playground
  • Pool: Yes
  • Pool Description: Association, In-Ground, Fenced, Community, Private
  • Spa Description: Association, In-Ground, Community, Private

Exterior

  • Deck/Patio: Covered, Front Porch, Rear Porch

Parking

  • Garage: Yes
  • Garage Spaces: 10
  • Parking: Garage, Garage (Direct Access), Driveway, Private, Garage Faces Side, Oversized

Location

  • County: Los Angeles
  • Driving Directions: S Diamond Bar BLVD/ Shadow Canyon DR/ Steeplechase LN/ Alamo Heights DR/ Ridge Line RD

School Information

  • School District: Walnut Valley Unified

Community

  • Community Features: Curbs, Horse Trails, Sidewalks, Suburban
  • Assoc. Name: Diamond Bar Country Estate

Heating & Cooling

  • Cooling Type: Central Air
  • Heating Type: Fireplace(s), Natural Gas, Central

Utilities

  • Sewer: Public Sewer
  • Water: Public

Structural Information

  • Structure Type: Single Family Residence
  • Common Walls: No Common Walls
  • Disability Access: 2 or More Accessible Exits, Parking, Accessible Elevator Installed
  • Entry Location: front door
  • Stories/Levels: Multi/Split
  • Stories Description: Multi/Split
  • Square Feet: 17,241
  • Sq. Ft. Source: Assessor
  • Year Built: 2008
  • Year Built Source: Assessor

Additional Structures

  • Other Structures: Gazebo

Lot Features

  • Property View: Hills
  • Lot Size (Acres): 1.2247
  • Lot Size (Sq. Ft.): 53,347
  • Lot Size Source: Assessor
  • Irrigation System: Sprinkler System
  • Lot Description: Lot Over 40000 Sqft, Landscaped, 0-1 Unit/Acre, Sprinkler System

Financial Considerations

  • Price Per Sq. Ft.: $463.43
  • Association Fee: $308
  • Assoc Fee Freq.: Monthly

Disclosures and Reports

  • Special Conditions: Standard

Listed by ReMax 2000 Realty, Amie Chen and ReMax 2000 Realty, Bella Le Deaux

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Listing agents

— 22588 Ridge Line Rd —

  • Amie Chen

    ReMax 2000 Realty

  • Bella Le Deaux

    ReMax 2000 Realty

626-806-5266

Get Pre-Approved Today

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Schools serving 22588 Ridge Line Rd

School District:Walnut Valley Unified School District
NameGradesDistance
Evergreen Elementary School, Diamond Bar, CA
2450 S. Evergreen Springs, Diamond Bar, CA 91765
K-50.8 mi
Chaparral Middle School, Diamond Bar, CA
1408 Spruce Tree Drive, Diamond Bar, CA 91765
6-80.9 mi
Diamond Bar High School
21400 Pathfinder Road, Diamond Bar, CA 91765
9-121.2 mi
Disclaimer: School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 22588 Ridge Line Rd Get Price Alerts and Save Property

Date
Details
Price
Change
Source
3/27/2026
Listed
$7,990,000
59.8%
MLS
7/21/2009
Sold
$5,000,000
—
Public Record
Get Price Alerts and Save Property
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Tax History for 22588 Ridge Line Rd

Year
Property Taxes
Change
Tax Assessment
Change
2025
$79,246
8%
$6,454,114
4%
2023
$73,612
2%
$6,203,496
2%
2022
$72,063
2%
$6,081,860
2%
2021
$70,727
1%
$5,962,608
1%
2020
$69,814
2%
$5,901,470
2%
2019
$68,462
4%
$5,785,756
2%
2018
$65,823
5%
$5,672,310
2%
2017
$62,741
3%
$5,561,090
2%
2016
$60,863
-1%
$5,452,050
2%
2015
$61,274
—
$5,370,156
2%
2014
$61,308
1%
$5,264,964
—
2013
$60,881
—
$5,241,170
—
View All
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

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NMLS#: 1598647

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Listed by ReMax 2000 Realty, Amie Chen and ReMax 2000 Realty, Bella Le Deaux

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22588 Ridge Line Road, Diamond Bar, CA 91765 (MLS# TR26059752) is a Single Family property with 11 bedrooms, 11 full bathrooms and 2 partial bathrooms. 22588 Ridge Line Road is currently listed for $7,990,000 and was received on March 27, 2026. Want to learn more about 22588 Ridge Line Road? Do you have questions about finding other Single Family real estate for sale in Diamond Bar? You can browse all Diamond Bar real estate or contact a Coldwell Banker agent to request more information.

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