2878 Crystal Ridge Rd, Diamond Bar, CA 91765

Off market jun 2025 for $3.4M

$3,840,435

Est. refi paymentEst. refi $11,586/mo

•

10,312

sq ft

2878 Crystal Ridge Rd, Diamond Bar, CA 91765

About this home

Located within the prestigious 24-hour gate-guarded community of The Country, this luxury European-inspired estate is the epitome of luxury and grandeur. Spanning an impressive 10,312 square feet on a 0.64-acre lot, this architectural masterpiece is adorned with imported chandeliers, granite flooring, and countertops, creating an ambiance of timeless elegance. Situated in a prime location within one of Southern California’s most sought-after communities, this residence also provide access to an award-winning school district, making it the perfect choice for those seeking both prestige and top-tier education. The residence features seven luxurious bedroom suites, including two on the main level for convenience. The primary suite is a true palace, offering unparalleled sophistication and comfort. Designed for both grand-scale entertaining and intimate gatherings, the home boasts dramatic front and back staircases, five fireplaces that add warmth and charm, and expansive built-in cabinetry with an elegant entertainment center. A grand wet bar creates the perfect setting for hosting in style, while the dedicated library and home theater provide the ultimate private retreat. Outside, the resort-style backyard is a private oasis, featuring a custom-designed pool with exquisite water fountains framed by hand-carved marble columns. The four-car garage offers ample space for prized vehicles, completing this estate’s flawless blend of sophistication, comfort, and prestige. With an unbeatable location and unmatched level of elegance, this estate presents a rare opportunity to own a true masterpiece in The Country Estates. Schedule your private tour today.

Single-familyProperty Type

2005Year Built

0.63 acresLot Size

$372Est. Price/Sq.Ft.

4 car garageParking

Listed by Grace Zhang •DRE #01946544 • RE/MAX Galaxy

Listed by Zheng Sun •DRE #02030373 • RE/MAX Galaxy

Contact: 909-223-2297

Bought with Ke Chung Liu •DRE #01081247 • IRN Realty

Redfin checked: 3 minutes ago

•Source:CRMLS #TR25028384

Redfin Estimate

$3,840,435

$420K since sold in June 2025$342K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 11.2% higher than the average sale price ($3.45M) of 6 comparable homes.

SOLD DEC 24, 2025
$3,160,000
A
6 beds5.5 baths6,506 sq ft
2862 Oak Knoll Dr, Diamond Bar, CA 91765
SOLD JUN 5, 2026
$7,000,000
B
5 beds7 baths10,638 sq ft
22588 Pacific Ln, Diamond Bar, CA 91765
SOLD AUG 21, 2026
$1,680,000
C
5 beds3 baths3,006 sq ft
21642 High Bluff Rd, Diamond Bar, CA 91765
Century 21 Masters
SOLD MAR 3, 2026
$2,550,000
D
4 beds5 baths5,144 sq ft
2832 Oak Knl, Diamond Bar, CA 91765
SOLD OCT 1, 2026
$3,930,000
E
6 beds5.5 baths6,423 sq ft
2868 Oak Knoll Dr, Diamond Bar, CA 91765
ReMax Elite Realty
SOLD SEP 23, 2026
$2,400,000
F
6 beds6 baths7,385 sq ft
2838 Bentley Way, Diamond Bar, CA 91765

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Earn from this home

Sell

$957,364

Est. take-home

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Refinance

Est. cash available

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Rent

$5,304/mo

Redfin rental estimate

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Market trends in 91765, CA

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

97.8%

0.8% MoM

Median sale price

$1.1M

$12K MoM

Avg. days on market

61d

18 days MoM

Recently sold homes

3 MoM

New listings for sale

NEW 7 HRS AGO
$999,999
4 beds2 baths1,771 sq ft
1123 Cleghorn, Diamond Bar, CA 91765
$2,068,000
5 beds5 baths4,725 sq ft
23553 Canyon Vista Ct, Diamond Bar, CA 91765
NEW 34 HRS AGO
$509,000
2 beds2 baths828 sq ft
800 Grand Ave Unit A15, Diamond Bar, CA 91765
OPEN SUN, 1PM TO 4PM
$899,899
3 beds2 baths1,300 sq ft
2740 Sunbright, Diamond Bar, CA 91765
$675,000
3 beds2 baths989 sq ft
23516 Deer Spring Ln, Diamond Bar, CA 91765
OPEN SAT, 2PM TO 4PM
$1,780,000
5 beds3.5 baths3,453 sq ft
3125 S Ridge Point Dr, Diamond Bar, CA 91765
ReMax 2000 Realty
$899,000
3 beds2 baths1,274 sq ft
22922 Dry Crk, Diamond Bar, CA 91765
OPEN THU, 4PM TO 6PM
$948,000
3 beds3 baths1,552 sq ft
24271 Seagreen Dr, Diamond Bar, CA 91765
K.W. EXECUTIVE
$4,000,000
6 beds5 baths5,797 sq ft
1809 Diamond Knl, Diamond Bar, CA 91765
$1,480,000
5 beds3 baths2,447 sq ft
1667 Cypress Grove Ln, Diamond Bar, CA 91765
See all

Provided by Redfin

Sale history for 2878 Crystal Ridge Rd

Date

Event

Price

CRMLS #TR25028384

Jun 25, 2025

Sold

$3,420,000

$332/sq ft

Jun 10, 2025

Contingent

—

May 8, 2025

Relisted

—

May 1, 2025

Contingent

—

Mar 28, 2025

Relisted

—

Mar 27, 2025

Price Changed

$3,988,000

$387/sq ft

Feb 7, 2025

Listed

$4,498,800

$436/sq ft

CRMLS #C619700

Oct 27, 2006

Sold

$3,750,000

$364/sq ft

Aug 8, 2006

Listed

$3,988,800

$387/sq ft

CRYSTAL RIDGE ESTATE. GORGEOUS EUROPEAN PALACE W/ LOTS OF IMPORTED CHANDELIERS & EXTENSIVE USE OF GRANITE FLOORING & COUNTERTOP. FRONT & BACK STAIRS. VERY STYLISH DECORATION TO THE EXTREME. 2SUITES DOWN. 5UP+LIBRARY(HOME THEATER). 5 FIREPLACES. LOTS OF BUILT-IN CABINETS & ENTERTAINMENT CENTER. HUGE WET BAR. MBR LIKE A PALACE. CUSTOM POOL W/ HAND CARVED MARBLE COLUMN. .. FURNITURE MAY BE NEGOTIABLE.

CRMLS #C610764

May 15, 2006

Listing Removed

—

May 9, 2006

Listed

$3,988,800

$387/sq ft

Public Records

Oct 26, 2004

Sold

$1,800,000

$175/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$61,691 (+5.7%)

$2,040,000 + $1,448,400

$3,488,400

2024

$58,381 (+2.6%)

$2,000,000 + $3,058,300

$5,058,300

2023

$56,899 (+2.2%)

$1,641,895 + $3,283,797

$4,925,692

2022

$55,683 (+1.9%)

$1,609,701 + $3,219,409

$4,829,110

2021

$54,665 (+1.3%)

$1,578,139 + $3,156,284

$4,734,423

2020

$53,956 (+2.0%)

$1,547,196 + $3,094,397

$4,641,593

2019

$52,902 (+3.7%)

$1,531,332 + $3,062,668

$4,594,000

2018

$51,028 (+4.9%)

$1,501,306 + $3,002,616

$4,503,922

2017

$48,629 (+3.0%)

$1,443,009 + $2,886,022

$4,329,031

2016

$47,213 (−0.7%)

$1,443,009 + $2,886,022

$4,329,031

2015

$47,531 (+27.7%)

$1,414,715 + $2,829,434

$4,244,149

2014

$37,225 (−10.7%)

$1,065,000 + $2,129,000

$3,194,000

2012

$41,693 (+23.1%)

$1,065,000 + $2,129,000

$3,194,000

2011

$33,859

$1,177,300 + $2,354,400

$3,531,700

2010

$33,838 (−7.9%)

$960,000 + $1,919,900

$2,879,900

2009

$36,736 (−12.6%)

$960,000 + $1,919,900

$2,879,900

2008

$42,049

$1,048,400 + $2,096,800

$3,145,200

Tax history for 2878 Crystal Ridge Rd

Year

Property tax

Land + Additions

Assessment*

2025

$61,691 (+5.7%)

$2,040,000 + $1,448,400

$3,488,400

2024

$58,381 (+2.6%)

$2,000,000 + $3,058,300

$5,058,300

2023

$56,899 (+2.2%)

$1,641,895 + $3,283,797

$4,925,692

2022

$55,683 (+1.9%)

$1,609,701 + $3,219,409

$4,829,110

2021

$54,665 (+1.3%)

$1,578,139 + $3,156,284

$4,734,423

2020

$53,956 (+2.0%)

$1,547,196 + $3,094,397

$4,641,593

2019

$52,902 (+3.7%)

$1,531,332 + $3,062,668

$4,594,000

2018

$51,028 (+4.9%)

$1,501,306 + $3,002,616

$4,503,922

2017

$48,629 (+3.0%)

$1,443,009 + $2,886,022

$4,329,031

2016

$47,213 (−0.7%)

$1,443,009 + $2,886,022

$4,329,031

2015

$47,531 (+27.7%)

$1,414,715 + $2,829,434

$4,244,149

2014

$37,225 (−10.7%)

$1,065,000 + $2,129,000

$3,194,000

2012

$41,693 (+23.1%)

$1,065,000 + $2,129,000

$3,194,000

2011

$33,859

$1,177,300 + $2,354,400

$3,531,700

2010

$33,838 (−7.9%)

$960,000 + $1,919,900

$2,879,900

2009

$36,736 (−12.6%)

$960,000 + $1,919,900

$2,879,900

2008

$42,049

$1,048,400 + $2,096,800

$3,145,200

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Public record

Public record
Zoning

Beds

Baths

Stories

Lot width

—

Lot depth

—

Lot size

27,499

Year renovated

2026

Sq. Ft.

10,312

Year built

2005

Style

Single Family Residential

County

Los Angeles County

APN

8713052034

Parking Spaces

Basement

Accessible

HOA Dues

$308 /month

Garage

Yes

Features

Views, Pool

Last updated by owner on Aug 25, 2025.

Rural Residential District

The RR zoning district identifies hillside areas intended for rural living, including the keeping of animals, with supporting accessory structures. The maximum allowed density for new residential subdivisions within this zoning district will be one dwelling unit per gross acre, or lower densities where required by chapter 22.22 (Hillside Management). The RR zoning district is consistent with the rural residential land use category of the general plan.

Permitted uses

Include but are not limited to:

Livestock production
Housing-Single unit
Housing-Senior
Housing-Other
Infrastructure
Fire house
Police station
Park & open space

Property details

Parking

Parking / Garage Information
Attached Garage
# of Garage Spaces: 4
# of Parking Spaces: 4

Interior

Laundry Information
Has Laundry
Individual Room

Bathroom Information
# of Baths (Full): 8

Cooling Information
Central
Has Cooling

Room Information
Entry, Family Room, Formal Entry, Foyer, Galley Kitchen, Great Room, Kitchen, Laundry, Library, Living Room, Loft, Main Floor Bedroom, Primary Bathroom, Primary Bedroom, Primary Suite, Office, Retreat

Fireplace Information
Family Room, Library, Living Room, Primary Bedroom, Outdoors
Has Fireplace

Heating Information
Central Furnace
Has Heating

Interior Features
Entry Level: 1
Entry Location: 1
Levels: Two
Main Level Bathrooms: 3
Main Level Bedrooms: 2

Exterior

Exterior Information
Structure Type: House

Exterior Features
Pool Features: Private, In Ground
Has Pool
Has Sprinklers

Lot Information
Elevation Units: Feet
Lot Size Source: Assessor's Data
Lot Features: Back Yard, Lot 20000-39999 Sqft, Sprinkler System

Property Information
Total # of Units: 1
Common Walls: No Common Walls
Living Area Source: Assessor's Data
Parcel Number: 8713052034
Total # of Stories: 2
Has View
Year Built Source: Assessor
Property ADU: No

Financial

Assesments Information
Assessments: Unknown

Utilities

Utilities Information
Sewer: Public Sewer
Water Source: District/Public

Location

Homeowners Association
Is Part of Association
Association Name: DBCEA
Association Fee: $294
Association Fee Frequency: Monthly
Association Amenities: Pickleball, Pool, Spa, Outdoor Cooking Area, Picnic Area, Playground, Tennis, Sport Court, Horse Trails, Club House, Billiard Room, Call for Rules, Onsite Property Management, Guard, Security, Controlled Access

Neighborhood Information
Community Features: Horse Trails, Park, Suburban

School Information
High School: Diamond Bar
High School District: Walnut Valley Unified
High School 2: DIABAR

Location Information
Latitude: 33.96527400
Longitude: -117.83284300
Directions: Close to Diamond Bar Gate , Steeplechase and crystal ridge
Zoning: LCR120000-A2-1

Public facts

Beds: 7
Baths: 8.0
Sq. Ft.: 10,312
Stories: —
Parking Spaces: 4
Basement: No
Accessible: No
Lot Size: 0.63 acres
Style: Single Family Residential
Year Built: 2005
Year Renovated: 2026
County: Los Angeles County
APN: 8713052034
HOA Dues: $308/month
Garage: Yes
Features: Views, Pool

Home facts updated by owner on Aug 25, 2025

Other

Listing Information
IDX Contact Info: 909-223-2297
Days Active in MLS: 122
Continuous Days Active in MLS: 122

Listing Agent Information
List Agent First Name: Grace
List Agent Last Name: Zhang
Co-List Agent First Name: Zheng
Co-List Agent Last Name: Sun

Listing Office Information
List Office Name: RE/MAX Galaxy
Co-List Office Name: RE/MAX Galaxy

Selling Agent Information
Buyer Agent First Name: Ke Chung
Buyer Agent Last Name: Liu

Selling Office Information
Buyer Office Name: IRN Realty

Around this home

Schools

Castle Rock Elementary School

Public K-5 • Assigned • 0.8mi

10/10

South Pointe Middle School

Public 6-8 • Assigned • 2.0mi

10/10

Diamond Bar High School

Public 9-12 • Assigned • 1.2mi

10/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

5/10 Fire Factor

7% chance of being in a wildfire in next 30 years

5/10 Heat Factor

5 days above 98° expected this year, 14 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

6/10 Air Factor

10 unhealthy days expected this year, 13 days in 30 years

Provided by First Street

Historical weather

Diamond Bar, CA • 91765

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 9.7 hours in June and 6.9 hours in December, placing it above the U.S. average for solar exposure.

9.7 hrs

6.9 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$3.65M – $4.42M

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Nearby similar homes

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New listings for sale in 91765

NEW 7 HRS AGO

$999,999

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1123 Cleghorn, Diamond Bar, CA 91765

$2,068,000

5 beds5 baths4,725 sq ft

23553 Canyon Vista Ct, Diamond Bar, CA 91765

NEW 34 HRS AGO

$509,000

2 beds2 baths828 sq ft

800 Grand Ave Unit A15, Diamond Bar, CA 91765

OPEN SUN, 1PM TO 4PM

$899,899

3 beds2 baths1,300 sq ft

2740 Sunbright, Diamond Bar, CA 91765

$675,000

3 beds2 baths989 sq ft

23516 Deer Spring Ln, Diamond Bar, CA 91765

OPEN SAT, 2PM TO 4PM

$1,780,000

5 beds3.5 baths3,453 sq ft

3125 S Ridge Point Dr, Diamond Bar, CA 91765

ReMax 2000 Realty

$899,000

3 beds2 baths1,274 sq ft

22922 Dry Crk, Diamond Bar, CA 91765

OPEN THU, 4PM TO 6PMHOT HOME

$948,000

3 beds3 baths1,552 sq ft

24271 Seagreen Dr, Diamond Bar, CA 91765

K.W. EXECUTIVE

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6 beds5 baths5,797 sq ft

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Home values near 2878 Crystal Ridge Rd

Data from public records.

Address	Redfin Estimate
2889 Crystal Ridge Rd, Diamond Bar, CA 5 Beds \| - Baths \| 5380 Sq. Ft.	$3,283,212
2859 Crystal Ridge Rd, Diamond Bar, CA 5 Beds \| 6 Baths \| 6273 Sq. Ft.	$2,903,418

Address	Redfin Estimate
2887 Crystal Ridge Rd, Diamond Bar, CA 5 Beds \| 5 Baths \| 5228 Sq. Ft.	$2,863,179
2827 Crystal Ridge Rd, Diamond Bar, CA 7 Beds \| 8 Baths \| 8950 Sq. Ft.	$3,714,879

Address	Redfin Estimate
2881 Crystal Ridge Rd, Diamond Bar, CA 7 Beds \| - Baths \| 8376 Sq. Ft.	$3,718,619
2823 Crystal Ridge Rd, Diamond Bar, CA 6 Beds \| 6 Baths \| 7238 Sq. Ft.	$4,590,829

Property information provided by CRMLS when last listed in 2025. This data may not show owner updates. Learn more.

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 91765, CA

Sale history for 2878 Crystal Ridge Rd

Tax history for 2878 Crystal Ridge Rd

Public record

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 91765

Home values near 2878 Crystal Ridge Rd

More real estate resources