21435 Running Branch Rd, Diamond Bar, CA 91765

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Off Market Aug 2012 for $670K

$1,464,776

Est. refi paymentEst. refi $4,353/mo

•

2,798

sq ft

21435 Running Branch Rd, Diamond Bar, CA 91765

About this home

Beautiful home with lots of upgrades, featuring 180 degree city view from backyard. Spacious and open floor plan with 5 large bedrooms (title profile shows 3 bedrooms, 2 dens are being used as bedrooms, buyer to satisfy themselves) and 3 bathrooms, 1 bed and 1 bath downstairs. New wood flooring, new dual pane windows, newly painted inside and outside. Large backyard with swimming pool. Walnut school district. Close to super H Market plaza. Convenient location to everywhere.

Single-familyProperty Type

1979Year Built

0.26 acresLot Size

$524Est. Price/Sq.Ft.

3 car garageParking

Listed by Lisa Jin •DRE #01357873 • Treeline Realty & Investment

Bought with Lisa Jin •DRE #01357873 • Treeline Realty & Investment

Redfin checked: 4 minutes ago

•Source:CRMLS #A12086219

Redfin Estimate

$1,464,776

$795K since sold in August 2012$2,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 0.3% higher than the average sale price ($1.46M) 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 AUG 21, 2026
$1,680,000
D
5 beds3 baths3,006 sq ft
21642 High Bluff Rd, Diamond Bar, CA 91765
Century 21 Masters
SOLD FEB 6, 2026
$1,330,000
E
4 beds3 baths2,302 sq ft
21307 Chirping Sparrow Rd, Diamond Bar, CA 91765
SOLD JUL 27, 2026
$1,315,000
F
4 beds3 baths2,336 sq ft
3595 Hawkwood, Diamond Bar, CA 91765

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Sell

$1,024,347

Est. take-home

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Refinance

Est. cash available

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Rent

$3,962/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

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23308 Quail Smt, Diamond Bar, CA 91765
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1515 Sunbluff Dr, Diamond Bar, CA 91765
OPEN SUN, 1PM TO 4PM
$538,000
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OPEN SUN, 1PM TO 4PM
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See all

Provided by Redfin

Sale history for 21435 Running Branch Rd

Date

Event

Price

CRMLS #TR25188758

Aug 29, 2025

Rental Removed

$5,000

$2/sq ft

Aug 22, 2025

Listed for Rent

$5,000

$2/sq ft

CRMLS #A12086219

Aug 10, 2012

Sold

$670,000

$239/sq ft

Jul 25, 2012

Pending

—

Jul 11, 2012

Listed

$699,800

$250/sq ft

CRMLS #H12049620

May 25, 2012

Sold

$660,000

$236/sq ft

May 5, 2012

Pending

—

Apr 19, 2012

Listed

$668,000

$239/sq ft

Beautiful home with lots of upgrades. 180 degree city light view at the backyard. spacious and open floor plan with 5 large bedrooms and 3 bathrooms. 1 bed and 1 bath downstairs. new wood flooring. new dual pane windows. newly remodeled kitchen and bathrooms. newly painted inside and outside. large backyard with swimming pool. Walnut school district. close to super H Market plaza. convenient location to everywhere.

CRMLS #H09018833

Mar 27, 2009

Sold

$540,000

$193/sq ft

Mar 1, 2009

Listing Removed

—

Feb 13, 2009

Listed

$540,900

$193/sq ft

Public Records

Aug 5, 1998

Sold

$327,000

$117/sq ft

Public Records

Dec 11, 1992

Sold

$322,000

$115/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$10,663 (+5.3%)

$355,754 + $469,290

$825,044

2024

$10,131 (+2.4%)

$355,754 + $469,290

$825,044

2023

$9,891 (+2.1%)

$348,779 + $460,089

$808,868

2022

$9,687 (+1.9%)

$341,941 + $451,068

$793,009

2021

$9,505 (+1.3%)

$335,237 + $442,224

$777,461

2020

$9,385 (+1.9%)

$328,664 + $433,553

$762,217

2019

$9,207 (+4.4%)

$325,294 + $429,108

$754,402

2018

$8,816 (+4.8%)

$318,916 + $420,695

$739,611

2017

$8,414 (+3.1%)

$306,533 + $404,360

$710,893

2016

$8,160 (−0.6%)

$306,533 + $404,360

$710,893

2015

$8,211

$300,523 + $396,432

$696,955

2014

$8,219 (+18.4%)

$290,211 + $382,830

$673,041

2012

$6,940 (+2.9%)

$288,900 + $381,100

$670,000

2011

$6,741 (+0.7%)

$295,576 + $258,052

$553,628

2010

$6,691 (−13.7%)

$289,781 + $252,993

$542,774

2009

$7,750 (+60.5%)

$287,616 + $251,103

$538,719

2008

$4,830

$300,000 + $334,000

$634,000

Tax history for 21435 Running Branch Rd

Year

Property tax

Land + Additions

Assessment*

2025

$10,663 (+5.3%)

$355,754 + $469,290

$825,044

2024

$10,131 (+2.4%)

$355,754 + $469,290

$825,044

2023

$9,891 (+2.1%)

$348,779 + $460,089

$808,868

2022

$9,687 (+1.9%)

$341,941 + $451,068

$793,009

2021

$9,505 (+1.3%)

$335,237 + $442,224

$777,461

2020

$9,385 (+1.9%)

$328,664 + $433,553

$762,217

2019

$9,207 (+4.4%)

$325,294 + $429,108

$754,402

2018

$8,816 (+4.8%)

$318,916 + $420,695

$739,611

2017

$8,414 (+3.1%)

$306,533 + $404,360

$710,893

2016

$8,160 (−0.6%)

$306,533 + $404,360

$710,893

2015

$8,211

$300,523 + $396,432

$696,955

2014

$8,219 (+18.4%)

$290,211 + $382,830

$673,041

2012

$6,940 (+2.9%)

$288,900 + $381,100

$670,000

2011

$6,741 (+0.7%)

$295,576 + $258,052

$553,628

2010

$6,691 (−13.7%)

$289,781 + $252,993

$542,774

2009

$7,750 (+60.5%)

$287,616 + $251,103

$538,719

2008

$4,830

$300,000 + $334,000

$634,000

*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

0.26 Acres

Year renovated

1979

Sq. Ft.

2,798

Year built

1979

Style

Single Family Residential

County

Los Angeles County

APN

8714010029

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

Interior

Bathroom Information
# of Baths (Full): 3

Cooling Information
Central
Has Cooling

Room Information
Primary Bedroom

Fireplace Information
Family Room
Has Fireplace

Heating Information
Central Furnace
Has Heating

Interior Features
Levels: Two

Exterior

Exterior Features
Pool Features: In Ground
Has Pool

Lot Information
Lot Size Source: Assessor's Data

Property Information
Living Area Source: Assessor's Data
Parcel Number: 8714010029
Has View
Year Built Source: Assessor

Location

Neighborhood Information
Community Features: Curbs

School Information
High School District: Walnut Valley Unified

Location Information
Latitude: 33.96503400
Longitude: -117.84113300

Public facts

Beds: 3
Baths: 3.0
Sq. Ft.: 2,798
Stories: —
Lot Size: 0.26 acres
Style: Single Family Residential
Year Built: 1979
Year Renovated: 1979
County: Los Angeles County
APN: 8714010029

Home facts updated by county records on Aug 30, 2026

Other

Listing Information
Days Active in MLS: 39
Continuous Days Active in MLS: 39

Listing Agent Information
List Agent First Name: Lisa
List Agent Last Name: Jin

Listing Office Information
List Office Name: Treeline Realty & Investment

Selling Agent Information
Buyer Agent First Name: Lisa
Buyer Agent Last Name: Jin

Selling Office Information
Buyer Office Name: Treeline Realty & Investment

Around this home

Schools

Castle Rock Elementary School

Public K-5 • Assigned • 0.5mi

10/10

South Pointe Middle School

Public 6-8 • Assigned • 1.9mi

10/10

Diamond Bar High School

Public 9-12 • Assigned • 1.1mi

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

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

$1.39M – $1.69M

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Home values near 21435 Running Branch Rd

Data from public records.

Address	Redfin Estimate
21509 Running Branch Rd, Diamond Bar, CA 4 Beds \| 3 Baths \| 2695 Sq. Ft.	$1,428,141
21465 Running Branch Rd, Diamond Bar, CA 3 Beds \| 2 Baths \| 1752 Sq. Ft.	$1,309,938

Address	Redfin Estimate
21485 Running Branch Rd, Diamond Bar, CA 4 Beds \| 3 Baths \| 2798 Sq. Ft.	$1,207,668
21455 Running Branch Rd, Diamond Bar, CA 4 Beds \| 3 Baths \| 2695 Sq. Ft.	$1,571,135

Address	Redfin Estimate
21475 Running Branch Rd, Diamond Bar, CA 4 Beds \| - Baths \| 2695 Sq. Ft.	$1,485,599
21415 Running Branch Rd, Diamond Bar, CA 4 Beds \| 2.5 Baths \| 1752 Sq. Ft.	$1,161,907

Property information provided by CRMLS when last listed in 2025. This data may not match . Learn more.

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