21155 Running Branch Rd, Diamond Bar, CA 91765

Off Market Sep 2021 for $1.3M

$1,613,592

Est. refi paymentEst. refi $8,008/mo

•

2,558

sq ft

21155 Running Branch Rd, Diamond Bar, CA 91765

About this home

Wholly Rennovated View Home in the South Diamond Bar with Walnut Valley School District. It is a Brand New Home! Everthing is New. Designer's Painting exterior and interior. Brand New Wood flooring Throughout. Brand new custom white oak and painted maple cabinetry and quartz countertops throughout. Brand New Kitchen and 3 Luxury Custom Bathrooms. All new plumbing fixtures and new high end appliances. Brand New Custom Dual Pane windows. Brand New Heating and Air system. Brand New electrical panel and all updated plugs and switches. All new exterior and interior doors. New garage doors and opener. New led lights in every room and all new light fixtures inside and out. New Professional Landscaping with New sprinkler systems. New patio concrete in the backyard and new concrete and tile front porch entry. New Roofing with Warranty. Large and Flat Backyard with 180 Degree City light View. Convenient Location to Shopping Center and 57 and 60 Fwy for Easy Commute to LA and Orange County.

Single-familyProperty Type

1981Year Built

0.3 acresLot Size

$631Est. Price/Sq.Ft.

3 car garageParking

Listed by Cathy Cheng •DRE #01270713 • CC Royal Realty

Bought with Cathy Cheng •DRE #01270713 • CC Royal Realty

Redfin checked: a minute ago

•Source:CRMLS #TR21179869

Redfin Estimate

$1,613,592

$314K since sold in September 2021$6,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 14% higher than the average sale price ($1.42M) of 5 comparable homes.

SOLD MAY 28, 2026
$1,505,000
A
4 beds3 baths2,712 sq ft
3249 Hawkwood Rd, Diamond Bar, CA 91765
SOLD MAY 12, 2026
$1,680,000
B
4 beds3 baths2,697 sq ft
21535 Chirping Sparrow, Diamond Bar, CA 91765
SOLD JUL 27, 2026
$1,315,000
C
4 beds3 baths2,336 sq ft
3595 Hawkwood, Diamond Bar, CA 91765
SOLD FEB 6, 2026
$1,330,000
D
4 beds3 baths2,302 sq ft
21307 Chirping Sparrow Rd, Diamond Bar, CA 91765
SOLD MAR 25, 2026
$1,250,000
E
4 beds3 baths2,380 sq ft
3396 Hawkwood, Diamond Bar, CA 91765

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Earn from this home

Sell

$584,105

Est. take-home

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Refinance

Est. cash available

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Rent

$4,149/mo

Redfin rental estimate

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Market trends in 91765, CA

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

99.1%

0.2% MoM

Median sale price

$1.1M

$48K MoM

Avg. days on market

42d

0 days MoM

Recently sold homes

108

17 MoM

New listings for sale

COMING SOON
$585,000
2 beds2.5 baths1,012 sq ft
1109 Golden Springs Dr Unit D, Diamond Bar, CA 91765
OPEN SUN, 1PM TO 5PM
$1,648,000
4 beds3 baths3,212 sq ft
3315 Hawkwood, Diamond Bar, CA 91765
First Team Real Estate
$5,380,000
6 beds7 baths9,038 sq ft
2828 Water Course Dr, Diamond Bar, CA 91765
OPEN SUN, 1PM TO 3PM
$1,199,999
4 beds2.5 baths1,915 sq ft
23308 Quail Smt, Diamond Bar, CA 91765
$818,800
3 beds3 baths1,570 sq ft
22935 Estoril Dr #6, Diamond Bar, CA 91765
OPEN SUN, 1AM TO 3PM
$1,690,000
4 beds3 baths2,587 sq ft
1515 Sunbluff Dr, Diamond Bar, CA 91765
OPEN SUN, 1PM TO 4PM
$538,000
3 beds2 baths1,047 sq ft
800 Grand Ave Unit D1, Diamond Bar, CA 91765
$1,070,000
4 beds2.5 baths1,893 sq ft
24126 Silver Spray, Diamond Bar, CA 91765
OPEN SUN, 1PM TO 4PM
$1,150,000
4 beds3 baths1,747 sq ft
1036 Cogburn Ln, Diamond Bar, CA 91765
$625,000
3 beds2.5 baths1,420 sq ft
1030 Golden Springs Dr Unit B, Diamond Bar, CA 91765
See all

Provided by Redfin

Sale history for 21155 Running Branch Rd

Year

Property tax

Land + Additions

Assessment*

2025

$17,248 (+4.9%)

$848,966 + $530,604

$1,379,570

2024

$16,444 (+2.8%)

$848,966 + $530,604

$1,379,570

2023

$15,997 (+2.4%)

$832,320 + $520,200

$1,352,520

2022

$15,617 (+103.1%)

$816,000 + $510,000

$1,326,000

2021

$7,690 (+1.3%)

$800,000 + $500,000

$1,300,000

2020

$7,592 (+2.0%)

$246,439 + $370,521

$616,960

2019

$7,447 (+4.0%)

$243,913 + $366,722

$610,635

2018

$7,161 (+4.8%)

$239,131 + $359,532

$598,663

2017

$6,836 (+3.2%)

$229,847 + $345,572

$575,419

2016

$6,626 (−0.6%)

$229,847 + $345,572

$575,419

2015

$6,664 (−0.1%)

$225,341 + $338,797

$564,138

2014

$6,672 (+1.1%)

$217,610 + $327,172

$544,782

2012

$6,599 (+3.0%)

$216,627 + $325,694

$542,321

2011

$6,410 (+0.8%)

$212,380 + $319,308

$531,688

2010

$6,361 (+0.3%)

$208,216 + $313,048

$521,264

2009

$6,342 (+2.7%)

$206,660 + $310,709

$517,369

2008

$6,173

$207,151 + $311,448

$518,599

Tax history for 21155 Running Branch Rd

Year

Property tax

Land + Additions

Assessment*

2025

$17,248 (+4.9%)

$848,966 + $530,604

$1,379,570

2024

$16,444 (+2.8%)

$848,966 + $530,604

$1,379,570

2023

$15,997 (+2.4%)

$832,320 + $520,200

$1,352,520

2022

$15,617 (+103.1%)

$816,000 + $510,000

$1,326,000

2021

$7,690 (+1.3%)

$800,000 + $500,000

$1,300,000

2020

$7,592 (+2.0%)

$246,439 + $370,521

$616,960

2019

$7,447 (+4.0%)

$243,913 + $366,722

$610,635

2018

$7,161 (+4.8%)

$239,131 + $359,532

$598,663

2017

$6,836 (+3.2%)

$229,847 + $345,572

$575,419

2016

$6,626 (−0.6%)

$229,847 + $345,572

$575,419

2015

$6,664 (−0.1%)

$225,341 + $338,797

$564,138

2014

$6,672 (+1.1%)

$217,610 + $327,172

$544,782

2012

$6,599 (+3.0%)

$216,627 + $325,694

$542,321

2011

$6,410 (+0.8%)

$212,380 + $319,308

$531,688

2010

$6,361 (+0.3%)

$208,216 + $313,048

$521,264

2009

$6,342 (+2.7%)

$206,660 + $310,709

$517,369

2008

$6,173

$207,151 + $311,448

$518,599

*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

0.3 Acres

Year renovated

1981

Sq. Ft.

2,558

Year built

1981

Style

Single Family Residential

County

Los Angeles County

APN

8714012014

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Aug 30, 2026.

Low Density Residential District

The RL zoning district is intended primarily for parcels developed with existing detached single-family dwellings. The maximum allowed density for new residential subdivisions within this zoning district will be three dwellings per gross acre. The RL zoning district is consistent with the low density 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
# of Parking Spaces: 3

Interior

Laundry Information
Has Laundry
Individual Room

Bathroom Information
# of Baths (Full): 3

Cooling Information
Central
Has Cooling

Room Information
All Bedrooms Up

Fireplace Information
Family Room
Has Fireplace

Heating Information
Central Furnace
Has Heating

Interior Features
Levels: Two
Main Level Bathrooms: 1
Main Level Bedrooms: 0

Exterior

Exterior Information
Structure Type: House

Exterior Features
Pool Features: None

Lot Information
Elevation Units: Feet
Lot Size Source: Assessor's Data
Lot Features: 0-1 Unit/Acre

Property Information
Total # of Units: 1
Common Walls: No Common Walls
Living Area Source: Assessor's Data
Parcel Number: 8714012014
Total # of Stories: 2
Has View
Year Built Source: Assessor

Utilities

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

Location

Neighborhood Information
Community Features: Curbs

School Information
High School District: Walnut Valley Unified

Location Information
Latitude: 33.96381200
Longitude: -117.84540600
Directions: Gold Run and Hawkwood
Zoning: LCR19000*

Public facts

Beds: 4
Baths: 3.0
Sq. Ft.: 2,558
Stories: —
Lot Size: 0.3 acres
Style: Single Family Residential
Year Built: 1981
Year Renovated: 1981
County: Los Angeles County
APN: 8714012014

Home facts updated by county records on Aug 30, 2026

Other

Listing Information
Days Active in MLS: 2
Continuous Days Active in MLS: 2

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

Listing Office Information
List Office Name: CC Royal Realty

Selling Agent Information
Buyer Agent First Name: Cathy
Buyer Agent Last Name: Cheng

Selling Office Information
Buyer Office Name: CC Royal Realty

Around this home

Schools

Castle Rock Elementary School

Public K-5 • Assigned • 0.6mi

10/10

South Pointe Middle School

Public 6-8 • Assigned • 1.9mi

10/10

Diamond Bar High School

Public 9-12 • Assigned • 1.3mi

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

5/10 Heat Factor

6 days above 98° expected this year, 17 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 9.5 hours in June and 6.9 hours in December, placing it above the U.S. average for solar exposure.

9.5 hrs

6.9 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$1.53M – $1.86M

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Nearby similar homes

OPEN SUN, 1PM TO 5PM

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3315 Hawkwood, Diamond Bar, CA 91765

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New listings for sale in 91765

COMING SOON

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2 beds2.5 baths1,012 sq ft

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OPEN SUN, 1PM TO 5PM

$1,648,000

4 beds3 baths3,212 sq ft

3315 Hawkwood, Diamond Bar, CA 91765

First Team Real Estate

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6 beds7 baths9,038 sq ft

2828 Water Course Dr, Diamond Bar, CA 91765

OPEN SUN, 1PM TO 3PM

$1,199,999

4 beds2.5 baths1,915 sq ft

23308 Quail Smt, Diamond Bar, CA 91765

$818,800

3 beds3 baths1,570 sq ft

22935 Estoril Dr #6, Diamond Bar, CA 91765

OPEN SUN, 1AM TO 3PM

$1,690,000

4 beds3 baths2,587 sq ft

1515 Sunbluff Dr, Diamond Bar, CA 91765

OPEN SUN, 1PM TO 4PM

$538,000

3 beds2 baths1,047 sq ft

800 Grand Ave Unit D1, Diamond Bar, CA 91765

$1,070,000

4 beds2.5 baths1,893 sq ft

24126 Silver Spray, Diamond Bar, CA 91765

OPEN SUN, 1PM TO 4PM

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Home values near 21155 Running Branch Rd

Data from public records.

Address	Redfin Estimate
21115 Running Branch Road, Diamond Bar, CA 3 Beds \| 3 Baths \| 2880 Sq. Ft.	$1,378,472
21195 Running Branch Road, Diamond Bar, CA 4 Beds \| 3 Baths \| 2988 Sq. Ft.	$1,419,600

Address	Redfin Estimate
21135 Running Branch Road, Diamond Bar, CA 4 Beds \| 3 Baths \| 2988 Sq. Ft.	$1,433,889
21203 Running Branch Road, Diamond Bar, CA 4 Beds \| 3 Baths \| 2880 Sq. Ft.	$1,483,804

Address	Redfin Estimate
21175 Running Branch Road, Diamond Bar, CA 4 Beds \| 2.5 Baths \| 2544 Sq. Ft.	$1,507,045
21211 Running Branch Road, Diamond Bar, CA 4 Beds \| 3 Baths \| 2558 Sq. Ft.	$1,332,031

Property information provided by CRMLS when last listed in 2021. This data may not match . Learn more.

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