23908 Ridge Line Rd, Diamond Bar, CA 91765

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Off Market Jan 2013 for $3.4M

$5,490,209

Est. refi paymentEst. refi $21,181/mo

•

10,238

sq ft

23908 Ridge Line Rd, Diamond Bar, CA 91765

About this home

In the 'Country Estates' 24 hr guarded gated community w/ patrol. A stunning custom built estate w/ panoramic city lights & mountain views, Catalina breeze, huge lot apprx. 2.86 acres has rm for tennis ct. , high elevation above street level, extravagant architectural details, custom designed wrought iron front door w/ glass, creative designed details throughout, marbled formal entry, very high ceilings, spiral wrought iron stair case w/ cherry wood finish, All bedrms are suites, beautiful office/library, huge main kitchen adjoined to big family rm w/ top of the line granite counter tops, big separate wok kitchen w/ name brand appliances, French windows, doors, balconies, 4 firepls. Master suite has a separate living rm for entertainment, views, large vanities & walk-ins. Very formal dining room w/ chandeliers. Great room in the lower level can be used for media/movie rm w/ trendy wet bar. Gym rm w/ steam shower & sauna. Very entertaining backyd features a big pool w/ cover, large cabana w/ a sitting area & kitchen. Fine finishes w/ beautiful craftsmanship. Come see and appreciate!

Single-familyProperty Type

1998Year Built

$536Est. Price/Sq.Ft.

6 car garageParking

Listed by Diana Cheng •DRE #00856071 • GoGo Realtors R.H Corp.

Bought with XIAO DONG HU •DRE #01875243 • COLDWELL BANKER/GEORGERLTY/ARC

Redfin checked: 4 minutes ago

•Source:CRMLS #H12093185

Redfin Estimate

$5,490,209

$2.1M since sold in January 2013$105K since July

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 54.7% higher than the average sale price ($3.55M) of 6 comparable homes.

SOLD JUN 18, 2026
$3,350,000
A
6 beds9 baths7,456 sq ft
2250 Indian Crk, Diamond Bar, CA 91765
SOLD APR 30, 2026
$2,900,000
B
5 beds6 baths6,078 sq ft
23615 Falcons View Dr, Diamond Bar, CA 91765
RE/MAX Galaxy
SOLD NOV 24, 2025
$3,900,000
C
7 beds8.5 baths9,557 sq ft
23624 Falcons View Dr, Diamond Bar, CA 91765
SOLD AUG 12, 2026
$1,440,600
D
4 beds3 baths3,203 sq ft
1135 Summitridge Dr, Diamond Bar, CA 91765
SOLD JUN 5, 2026
$7,000,000
E
5 beds7 baths10,638 sq ft
22588 Pacific Ln, Diamond Bar, CA 91765
SOLD FEB 3, 2026
$2,700,000
F
5 beds4 baths4,099 sq ft
2640 Shady Rdg, Diamond Bar, CA 91765
RE/MAX Galaxy

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Earn from this home

Sell

$3,327,803

Est. take-home

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Refinance

Est. cash available

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Rent

$5,158/mo

Redfin rental estimate

List your home for rent

Market trends in 91765, CA

Last updated July 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

99.4%

0.4% MoM

Median sale price

$1.1M

$22K MoM

Avg. days on market

42d

3 days MoM

Recently sold homes

16 MoM

New listings for sale

NEW 11 HRS AGO
$1,399,999
5 beds3 baths3,073 sq ft
21380 Chirping Sparrow Rd, Diamond Bar, CA 91765
NEW 17 HRS AGO
$435,000
2 beds1 bath850 sq ft
22824 Hilton Head Dr #90, Diamond Bar, CA 91765
OPEN SAT, 2PM TO 4PM
$349,000
2 beds2 baths949 sq ft
23635 Golden Springs Dr Unit 10B, Diamond Bar, CA 91765
OPEN SAT, 2PM TO 5PM
$1,398,000
4 beds2.5 baths2,857 sq ft
22060 Cedardale Dr, Diamond Bar, CA 91765
$2,198,000
5 beds5 baths4,212 sq ft
23601 Ridgecrest Ct, Diamond Bar, CA 91765
HOT HOME
$1,498,000
4 beds3 baths2,558 sq ft
20920 Running Branch Rd, Diamond Bar, CA 91765
$530,000
2 beds2 baths970 sq ft
2380 S Diamond Bar Unit D, Diamond Bar, CA 91765
$798,000
3 beds2.5 baths1,485 sq ft
22810 Chardonnay Dr #2, Diamond Bar, CA 91765
$1,199,888
3 beds2.5 baths1,745 sq ft
1423 Stonecrest Pl, Diamond Bar, CA 91765
COMING SOON
$818,800
3 beds3 baths1,570 sq ft
22935 Estoril Dr #6, Diamond Bar, CA 91765
See all

Provided by Redfin

Sale history for 23908 Ridge Line Rd

Year

Property tax

Land + Additions

Assessment*

2025

$51,625 (+2.6%)

$1,347,669 + $2,842,872

$4,190,541

2024

$50,320 (+2.7%)

$1,347,669 + $2,842,872

$4,190,541

2023

$48,979 (+2.1%)

$1,321,245 + $2,787,130

$4,108,375

2022

$47,980 (+2.0%)

$1,295,339 + $2,732,481

$4,027,820

2021

$47,022 (+3.4%)

$1,269,941 + $2,678,903

$3,948,844

2020

$45,483 (+0.2%)

$1,245,041 + $2,626,376

$3,871,417

2019

$45,400 (+5.7%)

$1,232,275 + $2,599,446

$3,831,721

2018

$42,935 (+3.1%)

$1,208,113 + $2,548,477

$3,756,590

2017

$41,652 (+3.2%)

$1,161,201 + $2,449,517

$3,610,718

2016

$40,349 (−0.7%)

$1,161,201 + $2,449,517

$3,610,718

2015

$40,613 (−0.2%)

$1,138,433 + $2,401,488

$3,539,921

2014

$40,706 (+23.5%)

$1,099,368 + $2,319,081

$3,418,449

2012

$32,957 (+2.9%)

$839,764 + $1,919,469

$2,759,233

2011

$32,027 (+0.7%)

$823,299 + $1,881,833

$2,705,132

2010

$31,807

$807,156 + $1,844,935

$2,652,091

2009

$31,778 (+1.5%)

$801,124 + $1,831,147

$2,632,271

2008

$31,298

$803,028 + $1,835,498

$2,638,526

Tax history for 23908 Ridge Line Rd

Year

Property tax

Land + Additions

Assessment*

2025

$51,625 (+2.6%)

$1,347,669 + $2,842,872

$4,190,541

2024

$50,320 (+2.7%)

$1,347,669 + $2,842,872

$4,190,541

2023

$48,979 (+2.1%)

$1,321,245 + $2,787,130

$4,108,375

2022

$47,980 (+2.0%)

$1,295,339 + $2,732,481

$4,027,820

2021

$47,022 (+3.4%)

$1,269,941 + $2,678,903

$3,948,844

2020

$45,483 (+0.2%)

$1,245,041 + $2,626,376

$3,871,417

2019

$45,400 (+5.7%)

$1,232,275 + $2,599,446

$3,831,721

2018

$42,935 (+3.1%)

$1,208,113 + $2,548,477

$3,756,590

2017

$41,652 (+3.2%)

$1,161,201 + $2,449,517

$3,610,718

2016

$40,349 (−0.7%)

$1,161,201 + $2,449,517

$3,610,718

2015

$40,613 (−0.2%)

$1,138,433 + $2,401,488

$3,539,921

2014

$40,706 (+23.5%)

$1,099,368 + $2,319,081

$3,418,449

2012

$32,957 (+2.9%)

$839,764 + $1,919,469

$2,759,233

2011

$32,027 (+0.7%)

$823,299 + $1,881,833

$2,705,132

2010

$31,807

$807,156 + $1,844,935

$2,652,091

2009

$31,778 (+1.5%)

$801,124 + $1,831,147

$2,632,271

2008

$31,298

$803,028 + $1,835,498

$2,638,526

*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

2.02 Acres

Year renovated

1998

Sq. Ft.

10,238

Year built

1998

Style

Single Family Residential

County

Los Angeles County

APN

8713032007

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jul 9, 2026.

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
# of Garage Spaces: 6
Direct Garage Access, Garage Door Opener
Has Parking

Interior

Laundry Information
Has Laundry
Individual Room

Kitchen Information
Appliances: Convection Oven, Dishwasher, Freezer, Garbage Disposal, Ice Maker, Microwave, Oven, Range, Refrigerator, Stove, Trash Compactor, Water Heater Unit
Has Appliances
Breakfast Counter / Bar, Breakfast Nook, Formal Dining Room

Bathroom Information
# of Baths (Full): 7

Cooling Information
Central
Has Cooling

Room Information
Basement, Bonus Room, Dressing Area, Entry, Family Room, Great Room, Gym, Library, Living Room, Primary Bedroom, Main Floor Bedroom, Walk-In Pantry, Walk-In Closet, Retreat, Separate Family Room, Office, Home Theatre, Two Primaries

Fireplace Information
Family Room, Gas, Living Room, Primary Bedroom
Has Fireplace

Flooring Information
Carpet, Stone, Wood

Heating Information
Forced Air
Has Heating

Interior Features
Double Door Entry, French Doors
Built-Ins, Cathedral-Vaulted Ceilings, Elevator, Home Automation System
Levels: Three Or More
Security Features: Gated with Guard, Security System
Spa Features: Gunite, Heated, In Ground, Private
Has Spa
Window Features: Custom Covering, Drapes/Curtains, Double Pane Windows, French/Mullioned

Exterior

Exterior Information
Roof: Tile
Fencing: Blockwall, Wrought Iron
Has Fence
Construction Materials: Stucco

Exterior Features
Patio And Porch Features: Cabana, Slab
Has Patio
Pool Features: Association, Gunite, Heated, In Ground, Private
Has Pool
Has Sprinklers

Lot Information
Lot Size Source: Assessor's Data
Lot Features: Lot-Level/Flat, Lawn, Landscaped, Level with Street, Paved, Planned Unit Development, Secluded, Sprinklers In Front, Sprinklers In Rear, Sprinklers On Side, Sprinklers Timer, Sprinkler System, Yard

Property Information
Living Area Source: Assessor's Data
Parcel Number: 8713032007
Property Condition: Termite Clearance
Has View
Year Built Source: Assessor

Financial

Assesments Information
Assessments: Special Assessments

Utilities

Utilities Information
Water Source: District/Public

Location

Homeowners Association
Is Part of Association
Association Name: DBCEA
Association Fee: $205
Association Fee Frequency: Monthly
Association Amenities: Club House, Guard, Pet Rules, Pool, Sport Court, Tennis

School Information
High School District: Walnut Valley Unified

Location Information
Latitude: 33.98912400
Longitude: -117.80379500
Other Subdivision Name: COUNTRY ESTATES
Directions: Grand Ave entrance to Derringer then Right to Ridge Line ( with DRE ID proof at the gate.)
Zoning: R1

Public facts

Beds: 6
Baths: 7.0
Sq. Ft.: 10,238
Stories: —
Lot Size: 2.02 acres
Style: Single Family Residential
Year Built: 1998
Year Renovated: 1998
County: Los Angeles County
APN: 8713032007

Home facts updated by county records on Jul 9, 2026

Other

Listing Information
Days Active in MLS: 176
Continuous Days Active in MLS: 176

Listing Agent Information
List Agent First Name: Diana
List Agent Last Name: Cheng

Listing Office Information
List Office Name: GoGo Realtors Inc.

Selling Agent Information
Buyer Agent First Name: XIAO DONG
Buyer Agent Last Name: HU

Selling Office Information
Buyer Office Name: COLDWELL BANKER/GEORGERLTY/ARC

Around this home

Schools
Places
Transit

Evergreen Elementary School

Public K-5 • Assigned • 1.8mi

9/10

Chaparral Middle School

Public 6-8 • Assigned • 0.9mi

10/10

Diamond Bar High School

Public 9-12 • Assigned • 2.1mi

10/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

The real estate market is becoming more balanced. Buyers have more inventory, more data, and more time to make informed decisions than they did a year ago. Well-priced homes are still moving quickly, but today’s market rewards preparation, strategy,...
1 month ago • Los Angeles County
Peter Santos
Redfin Premier agent
82 deals
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Climate risks

1/10 Flood Factor

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

5/10 Fire Factor

5% chance of being in a wildfire in next 30 years

6/10 Heat Factor

5 days above 97° expected this year, 13 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

$5.22M – $6.31M

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New listings for sale in 91765

NEW 11 HRS AGO

$1,399,999

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21380 Chirping Sparrow Rd, Diamond Bar, CA 91765

NEW 17 HRS AGO

$435,000

2 beds1 bath850 sq ft

22824 Hilton Head Dr #90, Diamond Bar, CA 91765

OPEN SAT, 2PM TO 4PM

$349,000

2 beds2 baths949 sq ft

23635 Golden Springs Dr Unit 10B, Diamond Bar, CA 91765

OPEN SAT, 2PM TO 5PM

$1,398,000

4 beds2.5 baths2,857 sq ft

22060 Cedardale Dr, Diamond Bar, CA 91765

$2,198,000

5 beds5 baths4,212 sq ft

23601 Ridgecrest Ct, Diamond Bar, CA 91765

HOT HOME

$1,498,000

4 beds3 baths2,558 sq ft

20920 Running Branch Rd, Diamond Bar, CA 91765

$530,000

2 beds2 baths970 sq ft

2380 S Diamond Bar Unit D, Diamond Bar, CA 91765

$798,000

3 beds2.5 baths1,485 sq ft

22810 Chardonnay Dr #2, Diamond Bar, CA 91765

$1,199,888

3 beds2.5 baths1,745 sq ft

1423 Stonecrest Pl, Diamond Bar, CA 91765

Home values near 23908 Ridge Line Rd

Data from public records.

Address	Redfin Estimate
23719 Ridge Line Road, Diamond Bar, CA 5 Beds \| 4.5 Baths \| 6000 Sq. Ft.	$3,829,133
23819 Ridge Line Road, Diamond Bar, CA 3 Beds \| 3 Baths \| 3040 Sq. Ft.	$2,041,281

Address	Redfin Estimate
23735 Ridge Line Road, Diamond Bar, CA 6 Beds \| 8.5 Baths \| 9840 Sq. Ft.	$6,246,247
23901 Ridge Line Road, Diamond Bar, CA 4 Beds \| 3 Baths \| 2732 Sq. Ft.	$1,746,844

Address	Redfin Estimate
23807 Ridge Line Road, Diamond Bar, CA 5 Beds \| 5.5 Baths \| 7099 Sq. Ft.	$4,280,689
23929 Ridge Line Road, Diamond Bar, CA 4 Beds \| 4.5 Baths \| 8348 Sq. Ft.	$2,466,574

Property information provided by CRMLS when last listed in 2012. This data may not match . Learn more.

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