23840 Ridge Line Rd, Diamond Bar, CA 91765

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Off Market Sep 2012 for $925K

$2,070,610

Est. refi paymentEst. refi $6,010/mo

•

3,082

sq ft

23840 Ridge Line Rd, Diamond Bar, CA 91765

About this home

Single story home located in the prestigious guard-gated community "The Country". Functional open floor plan with over 3,000 sqft of living space situated on nearly 2 acres of lush professionally manicured landscaping. Double door entry invites you into the formal living, generous size dining area and family room all with high vaulted ceilings. Kitchen opens into spacious family room perfect for entertaining guests. Master bedroom also features high vaulted ceilings with sliding glass doors providing access to the private rear garden and beautiful panoramic views. Dual A/C systems that are 3 years new and 5 years new roof. Well maintained community features 24 hour secured entry/patrol, 4 tennis courts, swimming pool/spa, clubhouse, basketball court, park, children's playground and hiking trails. Brand new Community Center is currently being built which consists of indoor basketball court, badminton courts, table tennis, and two clay tennis courts with special lighting (complete by September 2012).

Single-familyProperty Type

1977Year Built

1.83 acresLot Size

$672Est. Price/Sq.Ft.

3 car garageParking

Listed by Michael Chu •DRE #01854128 • First Team SNS Real Estate

Bought with Michael Chu •DRE #01854128 • First Team SNS Real Estate

Redfin checked: 2 minutes ago

•Source:CRMLS #H12098496

Redfin Estimate

$2,070,610

$1.1M since sold in September 2012$4,000 since July

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 46.5% higher than the average sale price ($1.41M) of 6 comparable homes.

SOLD SEP 28, 2025
$1,500,000
A
3 beds3 baths2,761 sq ft
2591 Braided Mane Dr, Diamond Bar, CA 91765
RE/MAX Galaxy
SOLD AUG 12, 2026
$1,440,600
B
4 beds3 baths3,203 sq ft
1135 Summitridge Dr, Diamond Bar, CA 91765
BOUGHT WITH REDFIN JUL 10, 2026
$1,368,000
C
4 beds3 baths2,208 sq ft
1348 Rolling Knoll Rd, Diamond Bar, CA 91765
SOLD APR 28, 2026
$1,400,000
D
4 beds3 baths2,688 sq ft
2618 Rocky Trail Rd, Diamond Bar, CA 91765
SOLD MAR 6, 2026
$1,610,000
E
4 beds2.5 baths2,814 sq ft
2562 Steeplechase Ln, Diamond Bar, CA 91765
Meridox Real Estate
SOLD AUG 10, 2026
$1,163,000
F
4 beds2 baths1,780 sq ft
1934 Ano Nuevo, Diamond Bar, CA 91765
Pinnacle Real Estate Group

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Sell

$1,458,375

Est. take-home

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Refinance

Est. cash available

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Rent

$4,169/mo

Redfin rental estimate

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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

OPEN SAT, 2PM TO 5PM
$538,000
3 beds2 baths1,047 sq ft
800 Grand Ave Unit D1, Diamond Bar, CA 91765
NEW 21 HRS AGO
$1,070,000
4 beds2.5 baths1,893 sq ft
24126 Silver Spray, Diamond Bar, CA 91765
$818,800
3 beds3 baths1,570 sq ft
22935 Estoril Dr #6, Diamond Bar, CA 91765
3D WALKTHROUGH
$1,150,000
4 beds3 baths1,747 sq ft
1036 Cogburn Ln, Diamond Bar, CA 91765
$1,499,900
4 beds2.5 baths2,344 sq ft
23450 Amberwick Pl, Diamond Bar, CA 91765
RE/MAX 2000 REALTY
OPEN TUE, 5PM TO 7PM
$1,424,998
5 beds3 baths3,203 sq ft
24222 Brookwood Dr, Diamond Bar, CA 91765
Rubio Real Estate
COMING SOON
$1,198,000
4 beds3 baths1,829 sq ft
21116 Silver Cloud, Diamond Bar, CA 91765
$770,000
2 beds2.5 baths1,468 sq ft
22915 Colombard Ln #2, Diamond Bar, CA 91765
$479,000
2 beds2 baths940 sq ft
22857 Hilton Head, Diamond Bar, CA 91765
$1,199,900
4 beds4 baths1,810 sq ft
21325 Hipass Dr, Diamond Bar, CA 91765
See all

Provided by Redfin

Sale history for 23840 Ridge Line Rd

Year

Property tax

Land + Additions

Assessment*

2025

$14,773 (+4.4%)

$801,038 + $338,021

$1,139,059

2024

$14,146 (+2.8%)

$801,038 + $338,021

$1,139,059

2023

$13,767 (+2.4%)

$785,332 + $331,394

$1,116,726

2022

$13,443 (+1.8%)

$769,934 + $324,897

$1,094,831

2021

$13,200 (−3.5%)

$754,838 + $318,527

$1,073,365

2020

$13,680 (+6.9%)

$740,038 + $312,282

$1,052,320

2019

$12,793 (+5.6%)

$732,450 + $309,080

$1,041,530

2018

$12,109 (+4.8%)

$718,089 + $303,020

$1,021,109

2017

$11,557 (+3.0%)

$690,205 + $291,254

$981,459

2016

$11,221 (−0.6%)

$690,205 + $291,254

$981,459

2015

$11,292 (−0.5%)

$676,672 + $285,544

$962,216

2014

$11,348 (+156.6%)

$653,453 + $275,746

$929,199

2012

$4,422 (−7.6%)

$650,500 + $274,500

$925,000

2011

$4,783 (+0.8%)

$73,187 + $248,306

$321,493

2010

$4,744 (+0.7%)

$71,752 + $243,438

$315,190

2009

$4,711 (−1.7%)

$71,216 + $241,619

$312,835

2008

$4,792

$71,386 + $242,193

$313,579

Tax history for 23840 Ridge Line Rd

Year

Property tax

Land + Additions

Assessment*

2025

$14,773 (+4.4%)

$801,038 + $338,021

$1,139,059

2024

$14,146 (+2.8%)

$801,038 + $338,021

$1,139,059

2023

$13,767 (+2.4%)

$785,332 + $331,394

$1,116,726

2022

$13,443 (+1.8%)

$769,934 + $324,897

$1,094,831

2021

$13,200 (−3.5%)

$754,838 + $318,527

$1,073,365

2020

$13,680 (+6.9%)

$740,038 + $312,282

$1,052,320

2019

$12,793 (+5.6%)

$732,450 + $309,080

$1,041,530

2018

$12,109 (+4.8%)

$718,089 + $303,020

$1,021,109

2017

$11,557 (+3.0%)

$690,205 + $291,254

$981,459

2016

$11,221 (−0.6%)

$690,205 + $291,254

$981,459

2015

$11,292 (−0.5%)

$676,672 + $285,544

$962,216

2014

$11,348 (+156.6%)

$653,453 + $275,746

$929,199

2012

$4,422 (−7.6%)

$650,500 + $274,500

$925,000

2011

$4,783 (+0.8%)

$73,187 + $248,306

$321,493

2010

$4,744 (+0.7%)

$71,752 + $243,438

$315,190

2009

$4,711 (−1.7%)

$71,216 + $241,619

$312,835

2008

$4,792

$71,386 + $242,193

$313,579

*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

1.83 Acres

Year renovated

1977

Sq. Ft.

3,082

Year built

1977

Style

Single Family Residential

County

Los Angeles County

APN

8713032008

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Aug 30, 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: 3
Driveway - Concrete, Garage
Has Parking

Interior

Laundry Information
Has Laundry
Individual Room

Kitchen Information
Kitchen Island, Kitchen Open to Family Room

Bathroom Information
# of Baths (Full): 2

Cooling Information
Central, Dual
Has Cooling

Room Information
Dressing Area, Formal Entry, Living Room, Primary Bedroom, Separate Family Room

Fireplace Information
Living Room
Has Fireplace

Heating Information
Central Furnace
Has Heating

Interior Features
Double Door Entry
Levels: One
Spa Features: Association
Has Spa

Exterior

Exterior Features
Patio And Porch Features: Porch - Rear
Has Patio
Pool Features: Association
Has Pool
Has Sprinklers

Lot Information
Lot Size Source: Estimated
Lot Features: Sprinklers In Front, Sprinklers In Rear, Sprinklers On Side, Sprinklers Timer

Property Information
Direction Faces: North
Living Area Source: Assessor's Data
Parcel Number: 8713032008
Has View
Year Built Source: Assessor

Financial

Assesments Information
Assessments: Unknown

Location

Homeowners Association
Is Part of Association
Association Fee: $205
Association Fee Frequency: Monthly
Association Amenities: Barbecue, Club House, Guard, Hiking Trails, Picnic Area, Playground, Pool, Security, Spa, Tennis

School Information
High School District: Walnut Valley Unified

Location Information
Latitude: 33.98906300
Longitude: -117.80441300
Directions: Closer to Grand Entrance

Public facts

Beds: 4
Baths: 2.0
Sq. Ft.: 3,082
Stories: —
Lot Size: 1.83 acres
Style: Single Family Residential
Year Built: 1977
Year Renovated: 1977
County: Los Angeles County
APN: 8713032008

Home facts updated by county records on Aug 30, 2026

Other

Listing Information
Days Active in MLS: 26
Continuous Days Active in MLS: 26

Listing Agent Information
List Agent First Name: Michael
List Agent Last Name: Chu

Listing Office Information
List Office Name: First Team SNS Real Estate

Selling Agent Information
Buyer Agent First Name: Michael
Buyer Agent Last Name: Chu

Selling Office Information
Buyer Office Name: First Team SNS Real Estate

Around this home

Schools

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,...
2 months 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

$1.97M – $2.38M

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New listings for sale in 91765

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NEW 21 HRS AGO

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OPEN TUE, 5PM TO 7PM

$1,424,998

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24222 Brookwood Dr, Diamond Bar, CA 91765

Rubio Real Estate

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Home values near 23840 Ridge Line Rd

Data from public records.

Address	Redfin Estimate
23707 Ridge Line Rd, Diamond Bar, CA 6 Beds \| 7 Baths \| 6823 Sq. Ft.	$3,492,912
23807 Ridge Line Rd, Diamond Bar, CA 5 Beds \| 5.5 Baths \| 7099 Sq. Ft.	$4,280,689

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

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

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

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