23916 Ridge Line Rd, Diamond Bar, CA 91765

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Off market apr 2021 for $1.8M

$2,730,530

Est. refi paymentEst. refi $7,912/mo

•

5,475

sq ft

23916 Ridge Line Rd, Diamond Bar, CA 91765

About this home

Magnificent estate located in prestigious 24hour-guard-gated community “The Country Estates”, consists of two main levels totaling 3846 sqft and one lower level totaling 1629 sqft. Lovely double doors opens out into a high-ceilinged entryway with spiral staircase leading up. Open floor plan reveals a living room, formal dining room, and family room with fireplace. Sitting adjacent, the kitchen overlooks the back patio, with built-in appliances such as oven, microwave, and dishwasher. Breakfast nook lies across from sliding doors leading to patio outside. Patio overlooks beautiful mountain views and city lights. Enormous master suite rests in the upper level, complete with fireplace and a retreat-like living space, along with private balcony to enjoy the gorgeous views! Master bathroom features dual sinks, a walk-in closet, a jacuzzi tub, and separate shower as well as a private sauna. House also includes a lower level with 2 beds and 1.5 baths, along with large entertainment room complete with its own large bar kitchen as well as a wine cellar with its own refrigerators and separate, cottage-like nook for wine tastings. Perfect for entertaining guests! Don’t miss out on the chance to see this beautiful, open-concept home!

Single-familyProperty Type

1984Year Built

1.46 acresLot Size

$499Est. Price/Sq.Ft.

3 car garageParking

Listed by Diana Cheng •DRE #00856071 • Country Queen Real Estate

Bought with Sunny Sheng •DRE #01965217 • RE/MAX Galaxy

Redfin checked: a minute ago

•Source:CRMLS #TR20260809

Redfin Estimate

$2,730,530

$851K since sold in April 2021$49K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 37.8% higher than the average sale price ($1.98M) of 6 comparable homes.

SOLD MAR 13, 2026
$1,670,000
A
4 beds3 baths3,263 sq ft
22138 Rim Fire Ln, 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 AUG 12, 2026
$1,440,600
C
4 beds3 baths3,203 sq ft
1135 Summitridge Dr, Diamond Bar, CA 91765
SOLD FEB 3, 2026
$2,700,000
D
5 beds4 baths4,099 sq ft
2640 Shady Rdg, Diamond Bar, CA 91765
RE/MAX Galaxy
SOLD SEP 24, 2026
$1,450,000
E
5 beds3 baths2,806 sq ft
1590 Deer Crossing Dr, Diamond Bar, CA 91765
Re/Max Premier Properties
SOLD FEB 21, 2026
$1,730,000
F
5 beds3 baths3,203 sq ft
24300 Knoll Ct, Diamond Bar, CA 91765

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Earn from this home

Sell

$1,240,560

Est. take-home

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Refinance

Est. cash available

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Rent

$4,438/mo

Redfin rental estimate

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Market trends in 91765, CA

Last updated September 2026

Buyer's Market

Seller's Market

Balanced market

Sale-to-List Price

98.5%

0.6% MoM

Median sale price

$1.1M

$10K MoM

Avg. days on market

43d

1 days MoM

Recently sold homes

8 MoM

New listings for sale

NEW 1 DAY AGO
$675,000
3 beds2 baths989 sq ft
23516 Deer Spring Ln, Diamond Bar, CA 91765
$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
HOT HOME
$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
$1,170,000
4 beds2.5 baths2,154 sq ft
1029 Twin Cyn, Diamond Bar, CA 91765
FOR SALE BY OWNER
$1,200,000
3 beds2 baths1,339 sq ft
512 Armitos Pl, Diamond Bar, CA 91765
$1,499,900
5 beds3 baths3,203 sq ft
24215 Delta Dr, Diamond Bar, CA 91765
$468,000
2 beds2.5 baths1,056 sq ft
22871 Hilton Head Dr #230, Diamond Bar, CA 91765
See all

Provided by Redfin

Sale history for 23916 Ridge Line Rd

Date

Event

Price

CRMLS #TR20260809

Apr 8, 2021

Sold

$1,880,000

$343/sq ft

Apr 6, 2021

Pending

—

Jan 25, 2021

Contingent

—

Dec 21, 2020

Listed

$1,998,000

$365/sq ft

CRMLS #TR20117767

Dec 18, 2020

Listing Removed

—

Sep 25, 2020

Contingent

—

Aug 31, 2020

Price Changed

$1,998,000

$365/sq ft

Jun 18, 2020

Listed

$2,280,000

$416/sq ft

CRMLS #WS19213994

Feb 13, 2020

Listing Removed

—

Sep 5, 2019

Listed

$2,350,000

$429/sq ft

CRMLS #TR19014409

Jul 19, 2019

Listing Removed

—

Jan 19, 2019

Listed

$2,980,000

$544/sq ft

CRMLS #TR18189312

Dec 8, 2018

Listing Removed

—

Nov 2, 2018

Price Changed

$2,980,000

$544/sq ft

Aug 8, 2018

Listed

$3,180,000

$581/sq ft

CRMLS #TR18147779

Jul 13, 2018

Listing Removed

—

Jun 20, 2018

Listed

$4,680,000

$855/sq ft

Public Records

Mar 11, 2014

Sold

$1,680,000

$307/sq ft

CRMLS #CV13136272

Aug 8, 2013

Listing Removed

—

Jul 30, 2013

Price Changed

$1,800,000

$329/sq ft

Jul 12, 2013

Listed

$1,680,000

$307/sq ft

CRMLS #H412845

Dec 28, 2005

Listing Removed

—

Sep 20, 2004

Listed

$1,128,900

$206/sq ft

Public Records

Jun 5, 2002

Sold

$668,000

$122/sq ft

CRMLS #H219094

Mar 30, 2002

Listing Removed

—

Jul 21, 2001

Listed

$749,000

$137/sq ft

CRMLS #H219080

Dec 31, 2001

Listing Removed

—

Jul 20, 2001

Listed

$799,888

$146/sq ft

Public Records

Aug 5, 1988

Sold

$586,000

$107/sq ft

Public Records

Aug 3, 1983

Sold

$97,000

$18/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$20,976 (+4.6%)

$964,514 + $748,339

$1,712,853

2024

$20,048 (+2.7%)

$945,602 + $733,666

$1,679,268

2023

$19,516 (+2.3%)

$927,061 + $719,281

$1,646,342

2022

$19,068 (−16.2%)

$908,884 + $705,178

$1,614,062

2021

$22,763 (+1.3%)

$891,063 + $691,351

$1,582,414

2020

$22,472 (+2.0%)

$1,310,308 + $592,299

$1,902,607

2019

$22,036 (+4.0%)

$1,296,873 + $586,226

$1,883,099

2018

$21,181 (+4.9%)

$1,271,445 + $574,732

$1,846,177

2017

$20,194 (+2.9%)

$1,222,074 + $552,415

$1,774,489

2016

$19,624 (−0.6%)

$1,222,074 + $552,415

$1,774,489

2015

$19,752 (+101.0%)

$1,198,112 + $541,584

$1,739,696

2014

$9,826 (+1.0%)

$564,111 + $240,897

$805,008

2012

$9,728 (+2.9%)

$561,562 + $239,809

$801,371

2011

$9,456 (+0.7%)

$550,551 + $235,107

$785,658

2010

$9,389 (+0.2%)

$539,756 + $230,498

$770,254

2009

$9,371 (+2.6%)

$535,723 + $228,776

$764,499

2008

$9,131

$536,996 + $229,320

$766,316

Tax history for 23916 Ridge Line Rd

Year

Property tax

Land + Additions

Assessment*

2025

$20,976 (+4.6%)

$964,514 + $748,339

$1,712,853

2024

$20,048 (+2.7%)

$945,602 + $733,666

$1,679,268

2023

$19,516 (+2.3%)

$927,061 + $719,281

$1,646,342

2022

$19,068 (−16.2%)

$908,884 + $705,178

$1,614,062

2021

$22,763 (+1.3%)

$891,063 + $691,351

$1,582,414

2020

$22,472 (+2.0%)

$1,310,308 + $592,299

$1,902,607

2019

$22,036 (+4.0%)

$1,296,873 + $586,226

$1,883,099

2018

$21,181 (+4.9%)

$1,271,445 + $574,732

$1,846,177

2017

$20,194 (+2.9%)

$1,222,074 + $552,415

$1,774,489

2016

$19,624 (−0.6%)

$1,222,074 + $552,415

$1,774,489

2015

$19,752 (+101.0%)

$1,198,112 + $541,584

$1,739,696

2014

$9,826 (+1.0%)

$564,111 + $240,897

$805,008

2012

$9,728 (+2.9%)

$561,562 + $239,809

$801,371

2011

$9,456 (+0.7%)

$550,551 + $235,107

$785,658

2010

$9,389 (+0.2%)

$539,756 + $230,498

$770,254

2009

$9,371 (+2.6%)

$535,723 + $228,776

$764,499

2008

$9,131

$536,996 + $229,320

$766,316

*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

1.46 Acres

Year renovated

1984

Sq. Ft.

3,351

Year built

1984

Style

Single Family Residential

County

Los Angeles County

APN

8713032006

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Oct 7, 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
Attached Garage
# of Garage Spaces: 3
Garage
Has Parking
# of Parking Spaces: 3

Interior

Laundry Information
Has Laundry
Individual Room, Inside

Kitchen Information
Appliances: Double Oven, Garbage Disposal, Gas Cooktop, Microwave
Has Appliances
Breakfast Nook, Formal Dining Room
Granite Counters, Kitchen Open to Family Room, Remodeled Kitchen

Bathroom Information
# of Baths (Full): 4
# of Baths (1/2): 1
Shower, Double Sinks In Master Bath, Granite Counters, Jetted Tub, Separate tub and shower, Soaking Tub

Cooling Information
Central
Has Cooling

Room Information
Bonus Room, Game Room, Kitchen, Laundry, Living Room, Primary Suite, Retreat, Sauna, Separate Family Room, Walk-In Closet, Walk-In Pantry, Wine Cellar

Fireplace Information
Family Room, Primary Bedroom
Has Fireplace

Flooring Information
Carpet, Tile, Wood

Heating Information
Central Furnace
Has Heating

Interior Features
Double Door Entry
Balcony, Built-Ins, Ceiling Fan, Crown Moldings, Open Floor Plan, Recessed Lighting, Two Story Ceilings
Levels: Three Or More
Main Level Bathrooms: 1
Main Level Bedrooms: 1
Security Features: Gated Community, Gated with Guard

Exterior

Exterior Information
Structure Type: House
Other Structures: Sauna Private
Construction Materials: Stucco

Foundation Information
Foundation Details: Concrete Slab

Exterior Features
Patio And Porch Features: Deck, Porch - Front, Porch - Rear, Wood
Has Patio
Pool Features: Community Pool
Has Sprinklers

Lot Information
Elevation Units: Feet
Lot Size Source: Assessor's Data
Lot Features: Front Yard, Gentle Slope, Sprinkler System

Property Information
Total # of Units: 1
Common Walls: No Common Walls
Parcel Number: 8713032006
Total # of Stories: 3
Has View
Year Built Source: Estimated

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: $264
Association Fee Frequency: Monthly
Association Amenities: Pool, Spa, Picnic Area, Tennis, Horse Trails, Club House, Guard, Security, Controlled Access

Neighborhood Information
Community Features: Horse Trails, Park, Suburban

School Information
High School District: Walnut Valley Unified

Location Information
Latitude: 33.98969300
Longitude: -117.80371200
Directions: Cross Street: Derringer Ln.
Zoning: LCR140000*

Public facts

Beds: 3
Baths: 3.0
Sq. Ft.: 3,351
Stories: —
Lot Size: 1.46 acres
Style: Single Family Residential
Year Built: 1984
Year Renovated: 1984
County: Los Angeles County
APN: 8713032006

Home facts updated by county records on Oct 7, 2026

Other

Listing Information
Days Active in MLS: 35
Continuous Days Active in MLS: 218

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

Listing Office Information
List Office Name: Country Queen Real Estate

Selling Agent Information
Buyer Agent First Name: Na
Buyer Agent Last Name: Shao

Selling Office Information
Buyer Office Name: RE/MAX Universal Realty

Around this home

Schools

Evergreen Elementary School

Public K-5 • Assigned • 1.9mi

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

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

6 days above 97° expected this year, 16 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

$2.60M – $3.14M

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New listings for sale in 91765

NEW 1 DAY AGO

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$1,780,000

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ReMax 2000 Realty

$899,000

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22922 Dry Crk, Diamond Bar, CA 91765

HOT HOME

$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

$1,170,000

4 beds2.5 baths2,154 sq ft

1029 Twin Cyn, Diamond Bar, CA 91765

FOR SALE BY OWNER

$1,200,000

3 beds2 baths1,339 sq ft

512 Armitos Pl, Diamond Bar, CA 91765

$1,499,900

5 beds3 baths3,203 sq ft

24215 Delta Dr, Diamond Bar, CA 91765

Home values near 23916 Ridge Line Rd

Data from public records.

Address	Redfin Estimate
23735 Ridge Line Rd, Diamond Bar, CA 6 Beds \| 8.5 Baths \| 9840 Sq. Ft.	$6,465,680
23901 Ridge Line Rd, Diamond Bar, CA 4 Beds \| 3 Baths \| 2732 Sq. Ft.	$1,710,621

Address	Redfin Estimate
23807 Ridge Line Rd, Diamond Bar, CA 5 Beds \| 5.5 Baths \| 7099 Sq. Ft.	$4,165,783
23929 Ridge Line Rd, Diamond Bar, CA 4 Beds \| 4.5 Baths \| 8348 Sq. Ft.	$2,447,694

Address	Redfin Estimate
23819 Ridge Line Rd, Diamond Bar, CA 3 Beds \| 3 Baths \| 3040 Sq. Ft.	$1,958,254
23941 Ridge Line Rd, Diamond Bar, CA 3 Beds \| 3 Baths \| 2877 Sq. Ft.	$1,564,576

Property information provided by CRMLS when last listed in 2020. This data may not match . Learn more.

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