21326 Running Branch Rd, Diamond Bar, CA 91765

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Off Market Sep 2017 for $888K

$1,419,366

Est. refi paymentEst. refi $5,186/mo

•

2,697

sq ft

21326 Running Branch Rd, Diamond Bar, CA 91765

About this home

Absolutely stunning South Diamond Bar home tucked away on a quiet tree lined street just off of Brea Canyon Rd. This home will greet you with its charming curb appeal and leaded glass front door. This upgraded and spacious home is anchored by its custom wood and rod iron staircase and custom designed tile floors. You will step down to your cozy formal living room with high vaulted ceilings just adjacent to your formal dining room. The kitchen has beautiful cabinetry and Silestone countertops and a breakfast nook all looking out to the family room with cozy fireplace. There is a spacious office downstairs (can be used as 4th bedroom) with built in cabinetry and a French slider leading to your side yard. Two spacious secondary bedrooms upstairs with mirrored wardrobe and sharing a Jack and Jill style upgraded bathroom. The upgraded master suite is extra spacious with vaulted ceilings, a sitting area and French doors leading to your private balcony. Master bath has mirrored wardrobe, dual vanity, separate soaking tub and shower. As if all of this isn't enough, wait until you get to enjoy the serene and private backyard all custom landscaped with drought tolerant landscaping and irrigation system along with apple, orange and lime trees all producing fruit. This is the oasis you have been waiting for.

Single-familyProperty Type

1979Year Built

0.35 acresLot Size

$526Est. Price/Sq.Ft.

3 car garageParking

Listed by Derek Oie •DRE #01089705 • KW VISION

Bought with Yuan Le •DRE #01947274 • PYC Financial

Redfin checked: 4 minutes ago

•Source:CRMLS #CV17163107

Redfin Estimate

$1,419,366

$531K since sold in September 2017$5,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 0.7% higher than the average sale price ($1.41M) of 6 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 MAR 25, 2026
$1,250,000
C
4 beds3 baths2,380 sq ft
3396 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 APR 15, 2026
$1,379,000
E
4 beds3 baths2,697 sq ft
3424 Hawkwood Rd, Diamond Bar, CA 91765
Vimvi California
SOLD JUL 27, 2026
$1,315,000
F
4 beds3 baths2,336 sq ft
3595 Hawkwood, Diamond Bar, CA 91765

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Earn from this home

Sell

$764,396

Est. take-home

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Refinance

Est. cash available

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Rent

$4,146/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

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See all

Provided by Redfin

Sale history for 21326 Running Branch Rd

Date

Event

Price

CRMLS #CV17163107

Sep 15, 2017

Sold

$888,000

$329/sq ft

Sep 15, 2017

Sold

$888,000

$329/sq ft

Aug 9, 2017

Pending

—

Aug 8, 2017

Relisted

—

Jul 22, 2017

Pending

—

Jul 17, 2017

Listed

$888,000

$329/sq ft

Jul 17, 2017

Listed

$888,000

$329/sq ft

Public Records

Aug 25, 1986

Sold

$214,000

$79/sq ft

Public Records

Jul 24, 1984

Sold

$187,000

$69/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$12,816 (+5.1%)

$555,485 + $454,901

$1,010,386

2024

$12,192 (+2.5%)

$555,485 + $454,901

$1,010,386

2023

$11,899 (+2.1%)

$544,594 + $445,982

$990,576

2022

$11,654 (+1.9%)

$533,916 + $437,238

$971,154

2021

$11,438 (+1.3%)

$523,448 + $428,665

$952,113

2020

$11,292 (+2.0%)

$513,185 + $420,260

$933,445

2019

$11,075 (+4.5%)

$507,923 + $415,951

$923,874

2018

$10,596 (+136.2%)

$497,964 + $407,796

$905,760

2017

$4,485 (+3.4%)

$143,987 + $215,990

$359,977

2016

$4,336 (−0.5%)

$143,987 + $215,990

$359,977

2015

$4,358 (−0.3%)

$141,164 + $211,755

$352,919

2014

$4,369 (+1.2%)

$136,321 + $204,490

$340,811

2012

$4,315 (+3.0%)

$135,705 + $203,566

$339,271

2011

$4,191 (+0.8%)

$133,045 + $199,575

$332,620

2010

$4,157 (+0.5%)

$130,437 + $195,662

$326,099

2009

$4,136 (+2.8%)

$129,463 + $194,200

$323,663

2008

$4,023

$129,771 + $194,662

$324,433

Tax history for 21326 Running Branch Rd

Year

Property tax

Land + Additions

Assessment*

2025

$12,816 (+5.1%)

$555,485 + $454,901

$1,010,386

2024

$12,192 (+2.5%)

$555,485 + $454,901

$1,010,386

2023

$11,899 (+2.1%)

$544,594 + $445,982

$990,576

2022

$11,654 (+1.9%)

$533,916 + $437,238

$971,154

2021

$11,438 (+1.3%)

$523,448 + $428,665

$952,113

2020

$11,292 (+2.0%)

$513,185 + $420,260

$933,445

2019

$11,075 (+4.5%)

$507,923 + $415,951

$923,874

2018

$10,596 (+136.2%)

$497,964 + $407,796

$905,760

2017

$4,485 (+3.4%)

$143,987 + $215,990

$359,977

2016

$4,336 (−0.5%)

$143,987 + $215,990

$359,977

2015

$4,358 (−0.3%)

$141,164 + $211,755

$352,919

2014

$4,369 (+1.2%)

$136,321 + $204,490

$340,811

2012

$4,315 (+3.0%)

$135,705 + $203,566

$339,271

2011

$4,191 (+0.8%)

$133,045 + $199,575

$332,620

2010

$4,157 (+0.5%)

$130,437 + $195,662

$326,099

2009

$4,136 (+2.8%)

$129,463 + $194,200

$323,663

2008

$4,023

$129,771 + $194,662

$324,433

*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

0.35 Acres

Year renovated

1979

Sq. Ft.

2,697

Year built

1979

Style

Single Family Residential

County

Los Angeles County

APN

8714021004

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
Family Room, Kitchen, Laundry, Living Room, Office

Fireplace Information
Family Room
Has Fireplace

Heating Information
Central Furnace
Has Heating

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

Exterior

Exterior Features
Pool Features: None

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

Property Information
Total # of Units: 1
Common Walls: No Common Walls
Parcel Number: 8714021004
Has View
Year Built Source: Assessor

Financial

Assesments Information
Assessments: Unknown

Utilities

Utilities Information
Sewer: Sewer Paid
Water Source: Private

Location

Multi-Unit Information
# of Units In Community: 1

Neighborhood Information
Community Features: Sidewalks, Street Lighting

School Information
High School District: Call Listing Office

Location Information
Latitude: 33.96382500
Longitude: -117.84203900
Directions: Take Castle Rock Rd to Gold Run Drive
Zoning: LCR19000*

Public facts

Beds: 4
Baths: 3.0
Sq. Ft.: 2,697
Stories: —
Lot Size: 0.35 acres
Style: Single Family Residential
Year Built: 1979
Year Renovated: 1979
County: Los Angeles County
APN: 8714021004

Home facts updated by county records on Aug 30, 2026

Other

Listing Information
Days Active in MLS: 6
Continuous Days Active in MLS: 6

Listing Agent Information
List Agent First Name: DEREK
List Agent Last Name: OIE

Listing Office Information
List Office Name: KELLER WILLIAMS REALTY

Selling Agent Information
Buyer Agent First Name: Yuan
Buyer Agent Last Name: Le

Selling Office Information
Buyer Office Name: PYC Financial

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 • 1.2mi

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

5 days above 98° 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 9.5 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

$1.35M – $1.63M

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Home values near 21326 Running Branch Rd

Data from public records.

Address	Redfin Estimate
21393 Running Branch Road, Diamond Bar, CA 4 Beds \| 3 Baths \| 2798 Sq. Ft.	$1,601,629
21351 Running Branch Road, Diamond Bar, CA 3 Beds \| 3 Baths \| 2380 Sq. Ft.	$1,245,512

Address	Redfin Estimate
21377 Running Branch Road, Diamond Bar, CA 4 Beds \| 3 Baths \| 2695 Sq. Ft.	$1,338,173
21333 Running Branch Road, Diamond Bar, CA 4 Beds \| 3 Baths \| 2697 Sq. Ft.	$1,317,895

Address	Redfin Estimate
21365 Running Branch Road, Diamond Bar, CA 4 Beds \| 2 Baths \| 2037 Sq. Ft.	$1,240,824
21317 Running Branch Road, Diamond Bar, CA 5 Beds \| 3 Baths \| 3000 Sq. Ft.	$1,521,815

Property information provided by CRMLS when last listed in 2017. This data may not match . Learn more.

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