21221 Running Branch Rd, Diamond Bar, CA 91765

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Off Market Dec 2022 for $1M

$1,412,804

Est. refi paymentEst. refi $6,813/mo

•

2,798

sq ft

21221 Running Branch Rd, Diamond Bar, CA 91765

About this home

* * * GREAT DIAMOND RIDGE VIEW LOT LOCATION!! * * 5 Bedroom, 3 bathroom, recently refreshed and in move in condition * * * Downstairs Bedroom with slider entry from side yard and downstairs full bathroom. Carpet in living room and dining room. Kitchen and kitchenette has marble flooring leading to a step down family room with gorgeous brick fireplace. Kitchen has full pantry, stove top and double oven leading to enclosed patio. Upstairs features a large master bedroom with views of mountains boasting large master closet with organizer, double sinks, full tub, private toilet area with shower. All other bedrooms are upstairs to include a huge bonus room or 5th bedroom. Lot is over 10,000 sq ft, boasting gated RV PARKING!! Located in GREAT WALNUT VALLEY SCHOOL DISTRICT!! This home is being sold as a Trust Sale and will be sold in as is condition and is priced accordingly. Great deal in this market. Take a look. Welcome Home!

Single-familyProperty Type

1979Year Built

0.25 acresLot Size

$505Est. Price/Sq.Ft.

3 garage spacesParking

Listed by Debbie McKeehan-Hughes •DRE #01280299 • BHHS CA Properties

Bought with Joice Hsiao •DRE #01979792 • Joice Hsiao

Redfin checked: 2 minutes ago

•Source:CRMLS #PW22243192

Redfin Estimate

$1,412,804

$363K since sold in December 2022$0 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 3.2% lower than the average sale price ($1.46M) of 6 comparable homes.

SOLD MAY 12, 2026
$1,680,000
A
4 beds3 baths2,697 sq ft
21535 Chirping Sparrow, Diamond Bar, CA 91765
SOLD MAY 28, 2026
$1,505,000
B
4 beds3 baths2,712 sq ft
3249 Hawkwood Rd, Diamond Bar, CA 91765
SOLD FEB 6, 2026
$1,330,000
C
4 beds3 baths2,302 sq ft
21307 Chirping Sparrow Rd, Diamond Bar, CA 91765
SOLD MAR 25, 2026
$1,250,000
D
4 beds3 baths2,380 sq ft
3396 Hawkwood, Diamond Bar, CA 91765
SOLD AUG 21, 2026
$1,680,000
E
5 beds3 baths3,006 sq ft
21642 High Bluff Rd, Diamond Bar, CA 91765
Century 21 Masters
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

$553,189

Est. take-home

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Refinance

Est. cash available

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Rent

$3,968/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 21221 Running Branch Rd

Year

Property tax

Land + Additions

Assessment*

2025

$13,714 (+4.9%)

$767,399 + $325,020

$1,092,419

2024

$13,068 (+2.5%)

$767,399 + $325,020

$1,092,419

2023

$12,753 (+175.4%)

$752,352 + $318,648

$1,071,000

2022

$4,631 (+2.1%)

$737,600 + $312,400

$1,050,000

2021

$4,535 (+1.2%)

$87,782 + $249,819

$337,601

2020

$4,480 (+1.8%)

$86,061 + $244,921

$330,982

2019

$4,399 (+5.7%)

$85,179 + $242,410

$327,589

2018

$4,162 (+4.5%)

$83,509 + $237,657

$321,166

2017

$3,982 (+3.5%)

$80,267 + $228,430

$308,697

2016

$3,846 (−0.5%)

$80,267 + $228,430

$308,697

2015

$3,866 (−0.3%)

$78,694 + $223,951

$302,645

2014

$3,876 (+1.2%)

$75,994 + $216,267

$292,261

2012

$3,829 (+3.0%)

$75,651 + $215,290

$290,941

2011

$3,719 (−0.5%)

$74,168 + $211,069

$285,237

2010

$3,739 (+2.0%)

$72,714 + $206,931

$279,645

2009

$3,667 (+2.8%)

$72,171 + $205,385

$277,556

2008

$3,566

$72,343 + $205,873

$278,216

Tax history for 21221 Running Branch Rd

Year

Property tax

Land + Additions

Assessment*

2025

$13,714 (+4.9%)

$767,399 + $325,020

$1,092,419

2024

$13,068 (+2.5%)

$767,399 + $325,020

$1,092,419

2023

$12,753 (+175.4%)

$752,352 + $318,648

$1,071,000

2022

$4,631 (+2.1%)

$737,600 + $312,400

$1,050,000

2021

$4,535 (+1.2%)

$87,782 + $249,819

$337,601

2020

$4,480 (+1.8%)

$86,061 + $244,921

$330,982

2019

$4,399 (+5.7%)

$85,179 + $242,410

$327,589

2018

$4,162 (+4.5%)

$83,509 + $237,657

$321,166

2017

$3,982 (+3.5%)

$80,267 + $228,430

$308,697

2016

$3,846 (−0.5%)

$80,267 + $228,430

$308,697

2015

$3,866 (−0.3%)

$78,694 + $223,951

$302,645

2014

$3,876 (+1.2%)

$75,994 + $216,267

$292,261

2012

$3,829 (+3.0%)

$75,651 + $215,290

$290,941

2011

$3,719 (−0.5%)

$74,168 + $211,069

$285,237

2010

$3,739 (+2.0%)

$72,714 + $206,931

$279,645

2009

$3,667 (+2.8%)

$72,171 + $205,385

$277,556

2008

$3,566

$72,343 + $205,873

$278,216

*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

0.25 Acres

Year renovated

1979

Sq. Ft.

2,798

Year built

1979

Style

Single Family Residential

County

Los Angeles County

APN

8714011041

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
Uncovered Spaces: 4
Attached Garage
# of Garage Spaces: 3
Boat, Direct Garage Access, Driveway, Driveway - Brick, Driveway - Concrete, Garage, Garage - Front Entry, Off Street, RV Gated
Has Parking
# of Parking Spaces: 7

Interior

Laundry Information
Has Laundry
Gas Dryer Hookup, Inside, Washer Hookup

Kitchen Information
Appliances: Dishwasher, Double Oven, Garbage Disposal, Gas Oven, Gas Cooktop, Gas Water Heater, Microwave, Water Heater Unit, Water Line to Refrigerator
Has Appliances
Area, Formal Dining Room, In Kitchen, In Living Room
Kitchenette, Pots & Pan Drawers, Tile Counters, Walk-In Pantry

Bathroom Information
# of Baths (Full): 3
Bathtub, Shower, Shower in Tub, Closet in bathroom, Double sinks in bath(s), Double Sinks In Master Bath, Separate tub and shower, Soaking Tub, Tile Counters, Vanity area, Walk-in shower

Cooling Information
Central
Has Cooling

Room Information
Bonus Room, Family Room, Formal Entry, Kitchen, Laundry, Living Room, Main Floor Bedroom, Primary Suite, Separate Family Room, Utility Room, Walk-In Closet, Walk-In Pantry

Fireplace Information
Family Room
Has Fireplace

Flooring Information
Carpet, Stone

Heating Information
Central Furnace
Has Heating

Interior Features
Bar, Cathedral-Vaulted Ceilings, Ceiling Fan, Ceramic Counters, High Ceilings (9 Feet+)
Levels: Two, Multi/Split
Main Level Bathrooms: 1
Main Level Bedrooms: 1
Window Features: Screens, Skylights

Exterior

Exterior Information
Structure Type: House
Roof: Concrete
Fencing: Blockwall, Wood
Has Fence
Construction Materials: Stucco, Wood

Foundation Information
Foundation Details: Concrete Slab

Exterior Features
Patio And Porch Features: Brick
Has Patio
Pool Features: None

Lot Information
Elevation Units: Feet
Lot Size Source: Assessor's Data
Lot Features: Back Yard, Front Yard, Lot 10000-19999 Sqft

Property Information
Total # of Units: 1
Common Walls: No Common Walls
Living Area Source: Assessor's Data
Parcel Number: 8714011041
Total # of Stories: 2
Has View
Year Built Source: Assessor

Utilities

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

Location

Neighborhood Information
Community Features: Curbs, Gutters, Sidewalks, Storm Drains, Street Lighting

School Information
High School District: Walnut Valley Unified

Location Information
Latitude: 33.96396200
Longitude: -117.84392700
Directions: DIAMOND BAR/57 FREEWAY
Road Frontage Type: Access via City Streets
Road Surface Type: Paved
Zoning: LCR19000*

Public facts

Beds: 3
Baths: 3.0
Sq. Ft.: 2,798
Stories: —
Lot Size: 0.25 acres
Style: Single Family Residential
Year Built: 1979
Year Renovated: 1979
County: Los Angeles County
APN: 8714011041

Home facts updated by county records on Aug 30, 2026

Other

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

Listing Agent Information
List Agent First Name: Debbie
List Agent Last Name: McKeehan-Hughes

Listing Office Information
List Office Name: BHHS CA Properties

Selling Agent Information
Buyer Agent First Name: Joice
Buyer Agent Last Name: Hsiao

Selling Office Information
Buyer Office Name: Joice Hsiao

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

6% 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

$1.34M – $1.63M

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New listings for sale in 91765

COMING SOON

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OPEN SUN, 1PM TO 5PM

$1,648,000

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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

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22935 Estoril Dr #6, Diamond Bar, CA 91765

OPEN SUN, 1AM TO 3PM3D WALKTHROUGH

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1515 Sunbluff Dr, Diamond Bar, CA 91765

OPEN SUN, 1PM TO 4PM

$538,000

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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 4PM3D WALKTHROUGH

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Home values near 21221 Running Branch Rd

Data from public records.

Address	Redfin Estimate
21299 Running Branch Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 2037 Sq. Ft.	$1,251,788
21245 Running Branch Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 2192 Sq. Ft.	$1,274,810

Address	Redfin Estimate
21271 Running Branch Rd, Diamond Bar, CA 6 Beds \| 3 Baths \| 3493 Sq. Ft.	$1,404,511
21233 Running Branch Rd, Diamond Bar, CA 4 Beds \| 3 Baths \| 2695 Sq. Ft.	$1,601,548

Address	Redfin Estimate
21255 Running Branch Rd, Diamond Bar, CA 4 Beds \| 3 Baths \| 2800 Sq. Ft.	$1,336,000
21175 Running Branch Rd, Diamond Bar, CA 4 Beds \| 2.5 Baths \| 2544 Sq. Ft.	$1,507,045

Property information provided by CRMLS when last listed in 2022. This data may not match . Learn more.

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