23317 Ridge Line Rd, Diamond Bar, CA 91765

Local rules require you to be signed in to see more photos.

Off Market Jun 2018 for $2.4M

$3,201,030

Est. refi paymentEst. refi $15,408/mo

•

4,542

sq ft

23317 Ridge Line Rd, Diamond Bar, CA 91765

About this home

This Custom Single-story home, located in the 24-hour guard gated community, The Country in Diamond Bar, has been COMPLETELY RENOVATED THIS YEAR with new wood floor, new kitchen and bathroom upgrades, new cabinets, new re-piping and much more. Highlights include an OVER-SIZED USABLE FLAT LOT of approx. 15,000 sqft. (total lot size:71,380 sqft) Must see to appreciate high ceilings that accentuates breath taking, PANORAMIC VIEWS of city light and the mountains. The master bedroom opens to a backyard swimming pool and includes a separate sitting room, his/her closets, his/her showers with built-in steam sauna. For entertaining, the chef-inspired gourmet kitchen comes fully furnished with quartz counter-tops, new high-end appliances(Sub Zero, Viking, Miele and Wolf) and a large, user-friendly BBQ patio. The guest bedroom includes an expansive patio with a private double door entrance and a mezzanine floor. Prestigious Walnut School District. Unique opportunity to own a property with fully renovated interior and a large parcel of flat land not commonly found at the crest of Ridge Line section of the Country Estates.

Single-familyProperty Type

1989Year Built

1.64 acresLot Size

$705Est. Price/Sq.Ft.

3 garage spacesParking

Listed by Chloe Yoo •DRE #01978246 • New Star Realty & Investment

Bought with General NONMEMBER •DRE #01984203 • CRMLS

Redfin checked: 2 minutes ago

•Source:CRMLS #PW18097166

Redfin Estimate

$3,201,030

$726K since sold in June 2018$47K since July

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 65.3% higher than the average sale price ($1.94M) of 6 comparable homes.

SOLD MAY 28, 2026
$1,390,000
A
5 beds3 baths2,074 sq ft
23409 Coyote Spgs, Diamond Bar, CA 91765
SOLD FEB 3, 2026
$2,700,000
B
5 beds4 baths4,099 sq ft
2640 Shady Rdg, Diamond Bar, CA 91765
RE/MAX Galaxy
SOLD APR 30, 2026
$2,650,000
C
5 beds4.5 baths4,850 sq ft
2501 Reata Pl, 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 MAY 27, 2026
$1,455,000
E
5 beds3 baths2,655 sq ft
1554 Deerfoot, Diamond Bar, CA 91765
SOLD JUL 23, 2026
$1,980,000
F
5 beds4 baths4,642 sq ft
22517 Lazy Mdw, Diamond Bar, CA 91765

Claim this home to receive a free report every month with insights on the changing estimate.

Earn from this home

Sell

$1,381,583

Est. take-home

List your home with Redfin and save $16,005

Refinance

Est. cash available

Get cash now or lower your monthly rate

Rent

$5,041/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 12 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 23317 Ridge Line Rd

Date

Event

Price

Public Records

Jun 12, 2018

Sold

$2,475,500

$545/sq ft

CRMLS #PW18097166

Jun 11, 2018

Sold

$2,475,415

$545/sq ft

Jun 11, 2018

Sold

$2,475,415

$545/sq ft

May 21, 2018

Pending

—

May 12, 2018

Contingent

—

May 7, 2018

Listed

$2,588,888

$570/sq ft

May 7, 2018

Listed

$2,588,888

$570/sq ft

CRMLS #H08071485

Feb 3, 2009

Sold

$1,550,000

$341/sq ft

Jan 23, 2009

Listing Removed

—

Jan 3, 2009

Contingent

—

Sep 30, 2008

Price Changed

$1,890,000

$416/sq ft

Jun 18, 2008

Relisted

—

Jun 15, 2008

Contingent

—

May 15, 2008

Listed

$1,990,000

$438/sq ft

Rare find quality Custom home with single story in the Country Estates, unobstructed breathtaking view of city lights and snowcapped mountains. 5 bedrooms (4 suites) and office, maple hardwood floors, large French windows and doors for the view! Open floor plan, very high ceilings, Master suite has big walk-ins and connected to a 2 way access office. Contemporary kitchen with built-in Sub zeros. Nice flat back yard has Japanese style garden, little pool is for kids to enjoy, side yard has playground. Big lot is still expandable for more amenities. Owner has a plan for addition. Owner relocated.

Public Records

Dec 27, 2001

Sold

$934,000

$206/sq ft

Public Records

Mar 10, 1988

Sold

$106,090

$23/sq ft

Public Records

Jul 21, 1986

Sold

$186,000

$41/sq ft

Public Records

Jun 15, 1983

Sold

$75,000

$17/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$34,372 (+3.7%)

$1,786,161 + $1,030,416

$2,816,577

2024

$33,158 (+2.6%)

$1,786,161 + $1,030,416

$2,816,577

2023

$32,303 (+2.2%)

$1,751,139 + $1,010,212

$2,761,351

2022

$31,596 (+1.8%)

$1,716,803 + $990,404

$2,707,207

2021

$31,031 (+1.3%)

$1,683,141 + $970,985

$2,654,126

2020

$30,634 (+2.0%)

$1,650,139 + $951,947

$2,602,086

2019

$30,040 (+45.0%)

$1,633,219 + $942,186

$2,575,405

2018

$20,713 (+4.9%)

$1,601,196 + $923,712

$2,524,908

2017

$19,753 (+3.0%)

$998,620 + $721,224

$1,719,844

2016

$19,180 (−0.7%)

$998,620 + $721,224

$1,719,844

2015

$19,306 (−0.3%)

$979,040 + $707,083

$1,686,123

2014

$19,360 (+0.9%)

$945,445 + $682,820

$1,628,265

2012

$19,183 (+2.9%)

$941,173 + $679,735

$1,620,908

2011

$18,642 (+0.7%)

$922,719 + $666,407

$1,589,126

2010

$18,515 (+15.5%)

$904,627 + $653,341

$1,557,968

2009

$16,025 (+2.6%)

$897,867 + $648,459

$1,546,326

2008

$15,621

$768,613 + $572,444

$1,341,057

Tax history for 23317 Ridge Line Rd

Year

Property tax

Land + Additions

Assessment*

2025

$34,372 (+3.7%)

$1,786,161 + $1,030,416

$2,816,577

2024

$33,158 (+2.6%)

$1,786,161 + $1,030,416

$2,816,577

2023

$32,303 (+2.2%)

$1,751,139 + $1,010,212

$2,761,351

2022

$31,596 (+1.8%)

$1,716,803 + $990,404

$2,707,207

2021

$31,031 (+1.3%)

$1,683,141 + $970,985

$2,654,126

2020

$30,634 (+2.0%)

$1,650,139 + $951,947

$2,602,086

2019

$30,040 (+45.0%)

$1,633,219 + $942,186

$2,575,405

2018

$20,713 (+4.9%)

$1,601,196 + $923,712

$2,524,908

2017

$19,753 (+3.0%)

$998,620 + $721,224

$1,719,844

2016

$19,180 (−0.7%)

$998,620 + $721,224

$1,719,844

2015

$19,306 (−0.3%)

$979,040 + $707,083

$1,686,123

2014

$19,360 (+0.9%)

$945,445 + $682,820

$1,628,265

2012

$19,183 (+2.9%)

$941,173 + $679,735

$1,620,908

2011

$18,642 (+0.7%)

$922,719 + $666,407

$1,589,126

2010

$18,515 (+15.5%)

$904,627 + $653,341

$1,557,968

2009

$16,025 (+2.6%)

$897,867 + $648,459

$1,546,326

2008

$15,621

$768,613 + $572,444

$1,341,057

*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

1.64 Acres

Year renovated

1989

Sq. Ft.

4,542

Year built

1989

Style

Single Family Residential

County

Los Angeles County

APN

8713005019

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
Uncovered Spaces: 3
Attached Garage
# of Garage Spaces: 3
Direct Garage Access, Driveway - Concrete, Garage
Has Parking
# of Parking Spaces: 6

Interior

Laundry Information
Has Laundry
Individual Room

Kitchen Information
Appliances: 6 Burner Stove, Barbecue, Convection Oven, Dishwasher, Garbage Disposal, Gas Cooktop, Gas Water Heater, Microwave, Refrigerator, Water Softener
Has Appliances
Breakfast Nook, Formal Dining Room
Kitchen Island, Kitchen Open to Family Room, Pots & Pan Drawers, Remodeled Kitchen, Walk-In Pantry

Bathroom Information
# of Baths (Full): 2
# of Baths (3/4): 2
Double sinks in bath(s), Dual shower heads (or Multiple), Hollywood Bathroom (Jack&Jill), Quartz Counters, Walk-in shower

Cooling Information
Central
Has Cooling

Room Information
Den, Family Room, Great Room, Jack & Jill, Kitchen, Laundry, Living Room, Main Floor Primary Bedroom, Primary Suite, Sauna, Walk-In Closet, Walk-In Pantry

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

Flooring Information
Wood

Heating Information
Central Furnace, Forced Air
Has Heating

Interior Features
Double Door Entry, French Doors
Cathedral-Vaulted Ceilings
Levels: One
Main Level Bathrooms: 1
Main Level Bedrooms: 1
Security Features: 24 Hour Security, Gated with Guard
Window Features: Double Pane Windows

Exterior

Exterior Information
Roof: Tile
Other Structures: Sauna Private
Construction Materials: Stone, Stucco

Foundation Information
Foundation Details: Concrete Slab

Exterior Features
Barbecue Private
Patio And Porch Features: Patio, Porch - Front
Has Patio
Pool Features: Private, In Ground
Has Pool

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

Property Information
Total # of Units: 1
Common Walls: No Common Walls
Parcel Number: 8713005019
Property Condition: Turnkey, Updated/Remodeled
Total # of Stories: 1
Has View
Year Built Source: Assessor

Financial

Assesments Information
Assessments: Special Assessments

Utilities

Utilities Information
Electric: 220V In Laundry
Sewer: Public Sewer
Cable Connected, Electricity Connected, Natural Gas Connected, Sewer Connected, Water Connected
Water Source: District/Public

Location

Multi-Unit Information
# of Units In Community: 1

Homeowners Association
Is Part of Association
Association Name: The Country
Association Fee: $220
Association Fee Frequency: Monthly
Association Amenities: Pool, Tennis, Horse Trails, Gym/Ex Room

Neighborhood Information
Community Features: Horse Trails, Mountainous, Valley

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

Location Information
Latitude: 33.98982800
Longitude: -117.81309700
Directions: Diamond gate: Diamond Bar Blvd + Steeplechase Ln, Grand gate: Grand Ave + Shotgun Ln
Road Frontage Type: Private Road
Road Surface Type: Paved

Public facts

Beds: 5
Baths: 4.0
Sq. Ft.: 4,542
Stories: —
Lot Size: 1.64 acres
Style: Single Family Residential
Year Built: 1989
Year Renovated: 1989
County: Los Angeles County
APN: 8713005019

Home facts updated by county records on Jul 9, 2026

Other

Listing Information
Days Active in MLS: 4
Continuous Days Active in MLS: 4

Listing Agent Information
List Agent First Name: Chloe
List Agent Last Name: Yoo

Listing Office Information
List Office Name: New Star Realty & Investment

Selling Agent Information
Buyer Agent First Name: General
Buyer Agent Last Name: NONMEMBER

Selling Office Information
Buyer Office Name: CRMLS

Around this home

Schools

Evergreen Elementary School

Public K-5 • Assigned • 1.4mi

9/10

Chaparral Middle School

Public 6-8 • Assigned • 0.5mi

10/10

Diamond Bar High School

Public 9-12 • Assigned • 1.6mi

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
Was this helpful?

Climate risks

1/10 Flood Factor

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

5/10 Fire Factor

4% chance of being in a wildfire in next 30 years

5/10 Heat Factor

2 days above 98° expected this year, 5 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

$3.04M – $3.68M

Reach more buyers when you sell with Redfin. Save up to $32,010 in fees. 3 minutes to get started.

Need the cash from your home fast? Sell to .

Nearby similar homes

$1,199,888

3 beds2.5 baths1,745 sq ft

1423 Stonecrest Pl, Diamond Bar, CA 91765

3D WALKTHROUGH

$1,749,998

5 beds3.5 baths3,378 sq ft

1920 Flint Rock Rd, Diamond Bar, CA 91765

$5,988,000

6 beds9 baths10,466 sq ft

2695 Shady Ridge Ln, Diamond Bar, CA 91765

$6,990,000

6 beds8 baths9,158 sq ft

2137 Derringer Ln, Diamond Bar, CA 91765

$2,488,000

5 beds3.5 baths3,182 sq ft

1736 Derringer Ln, Diamond Bar, CA 91765

$1,249,999

4 beds3 baths2,218 sq ft

1752 Maple Hl, Diamond Bar, CA 91765

First Team Real Estate

New listings for sale in 91765

NEW 12 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

Home values near 23317 Ridge Line Rd

Data from public records.

Address	Redfin Estimate
23421 Ridge Line Rd, Diamond Bar, CA 4 Beds \| 2.5 Baths \| 3366 Sq. Ft.	$1,558,029
23303 Ridge Line Rd, Diamond Bar, CA 5 Beds \| 4.5 Baths \| 5505 Sq. Ft.	$2,478,384

Address	Redfin Estimate
23223 Ridge Line Rd, Diamond Bar, CA 4 Beds \| - Baths \| 3079 Sq. Ft.	$1,943,316
23347 Ridge Line Rd, Diamond Bar, CA 5 Beds \| 4 Baths \| 5642 Sq. Ft.	$2,297,065

Address	Redfin Estimate
23235 Ridge Line Rd, Diamond Bar, CA 4 Beds \| 4 Baths \| 4046 Sq. Ft.	$1,813,640
23411 Ridge Line Rd, Diamond Bar, CA 3 Beds \| 2 Baths \| 2196 Sq. Ft.	$1,536,230

Property information provided by CRMLS when last listed in 2018. This data may not match . Learn more.

More real estate resources

Cities
Zip Codes
Neighborhoods
Popular Searches

Irvine homes for sale
Pasadena homes for sale
Long Beach homes for sale

Download the Redfin App on the Apple App Store

Download the Redfin App from the Google Play Store

Join us

Become an Agent

Get referrals

Careers

Find homes faster

About us

Find us

Subsidiaries

Affiliated Business

Countries

United States

Canada

Updated September 2025: By searching, you agree to the Terms of Use, and Privacy Policy.

Do not sell or share my personal information.

REDFIN and all REDFIN variants, WALK SCORE, and the R logos, are trademarks of Redfin Corporation, registered or pending in the USPTO.

California DRE #01521930

Redfin is licensed to do business in New York as Redfin Real Estate. NY Standard Operating Procedures

New Mexico Real Estate Licenses

TREC: Info About Brokerage Services, Consumer Protection Notice

All mortgage lending products and information are provided by Rocket Mortgage, LLC | NMLS #3030; www.NMLSConsumerAccess.org. Licensed in 50 states. This site is not authorized by the New York State Department of Financial Services for mortgage solicitation or loan applications activities related to properties located in the State of New York.

Redfin Corporation is an affiliated business of Rocket Limited Partnership. Each company, and their subsidiaries, are separate legal entities operated and managed through its own management and governance structures.

If you are using a screen reader, or having trouble reading this website, please call Redfin Customer Support for help at 1-844-759-7732.

REDFIN IS COMMITTED TO AND ABIDES BY THE FAIR HOUSING ACT AND EQUAL OPPORTUNITY ACT. READ REDFIN'S FAIR HOUSING POLICY AND THE NEW YORK STATE FAIR HOUSING NOTICE.

GreatSchools Ratings provided by GreatSchools.org.

91709 homes for sale
91765 homes for sale
91789 homes for sale
91766 homes for sale
91768 homes for sale

Pathfinder homes for sale
Montefino homes for sale
Alameda Corridor homes for sale
Phillips Ranch homes for sale
Mount San Antonio College homes for sale

Houses for rent in Diamond Bar	Agents near me	Irvine, CA homes for sale	Diamond Bar Housing Market
Houses for sale near me	San Diego, CA homes for sale	Fremont, CA homes for sale
Land for sale near me	San Francisco, CA homes for sale	Pasadena, CA homes for sale
Open Houses near me	Los Angeles, CA homes for sale	Diamond Bar Property Records
Condos for sale near me	San Jose, CA homes for sale	CA New Listings