21425 Chirping Sparrow Rd, Diamond Bar, CA 91765

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Off Market Dec 2010 for $688K

$1,494,772

Est. refi paymentEst. refi $3,548/mo

•

2,798

sq ft

21425 Chirping Sparrow Rd, Diamond Bar, CA 91765

About this home

Gorgeous executive home in South Diamond Bar. Prestigious Walnut school district. Breath taking city and mountain view. 4 bedrooms and 3 bath with an oversized bonus room that can be used as a 5th bedroom. 1 Bed and 1 full bath downstairs. Open floor plan with vaulted ceiling. Owner spend almost 100K on upgrades with newer kitchens, bathrooms, flooring, marble fireplace, and energy efficient windows and door. A TRUE MUST SEE. Also available for lease for $2950 per month.

Single-familyProperty Type

1980Year Built

10,515 sq ftLot Size

$534Est. Price/Sq.Ft.

3 car garageParking

Listed by Chieh-Jen Ma •DRE #01869426 • GOGO REALTORS R.H. CORP.

Listed by Jennifer Chai •DRE #01024699 • GoGo Realtors R.H Corp.

Bought with Kain Tan •DRE #01295206 • ReMax 2000 Realty

Redfin checked: a few seconds ago

•Source:CRMLS #H10111779

Redfin Estimate

$1,494,772

$807K since sold in December 2010$2,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 3% lower than the average sale price ($1.54M) of 6 comparable homes.

SOLD MAY 19, 2026
$1,768,000
A
5 beds4 baths3,030 sq ft
3607 Hawkwood, Diamond Bar, CA 91765
RE/MAX Galaxy
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 JUN 29, 2026
$1,650,000
D
6 beds5 baths3,300 sq ft
3517 Hawkwood Dr, Diamond Bar, CA 91765
SOLD FEB 6, 2026
$1,330,000
E
4 beds3 baths2,302 sq ft
21307 Chirping Sparrow Rd, Diamond Bar, CA 91765
SOLD MAY 28, 2026
$1,505,000
F
4 beds3 baths2,712 sq ft
3249 Hawkwood Rd, Diamond Bar, CA 91765

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Sell

$1,071,719

Est. take-home

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Est. cash available

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Rent

$4,600/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

NEW 12 HRS AGO
$1,648,000
4 beds3 baths3,212 sq ft
3315 Hawkwood, Diamond Bar, CA 91765
First Team Real Estate
NEW 13 HRS AGO
$5,380,000
6 beds7 baths9,038 sq ft
2828 Water Course Dr, Diamond Bar, CA 91765
OPEN SAT, 1PM TO 3PM
$1,199,999
4 beds2.5 baths1,915 sq ft
23308 Quail Smt, Diamond Bar, CA 91765
OPEN SAT, 1PM TO 3PM
$1,690,000
4 beds3 baths2,587 sq ft
1515 Sunbluff Dr, Diamond Bar, CA 91765
OPEN SAT, 2PM TO 5PM
$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 SAT, 11AM TO 2PM
$1,150,000
4 beds3 baths1,747 sq ft
1036 Cogburn Ln, Diamond Bar, CA 91765
OPEN SAT, 12PM TO 3PM
$1,499,900
4 beds2.5 baths2,344 sq ft
23450 Amberwick Pl, Diamond Bar, CA 91765
RE/MAX 2000 REALTY
OPEN FRI, 12PM TO 2PM
$1,424,998
5 beds3 baths3,203 sq ft
24222 Brookwood Dr, Diamond Bar, CA 91765
Rubio Real Estate
OPEN SAT, 12PM TO 3PM
$770,000
2 beds2.5 baths1,468 sq ft
22915 Colombard Ln #2, Diamond Bar, CA 91765
See all

Provided by Redfin

Sale history for 21425 Chirping Sparrow Rd

Date

Event

Price

CRMLS #TR17066070

Oct 31, 2017

Relisted

—

Oct 31, 2017

Delisted

—

Aug 18, 2017

Delisted

—

Mar 30, 2017

Listed

$1,288,888

$461/sq ft

CRMLS #TR17000748

Mar 29, 2017

Listing Removed

—

Jan 3, 2017

Listed

$1,288,888

$461/sq ft

CRMLS #TR16710326

Dec 22, 2016

Delisted

—

Oct 14, 2016

Price Changed

$1,288,800

$461/sq ft

Sep 25, 2016

Listed

$1,388,888

$496/sq ft

CRMLS #H10111779

Dec 29, 2010

Sold

$688,000

$246/sq ft

Nov 19, 2010

Pending

—

Oct 21, 2010

Listed

$739,000

$264/sq ft

CRMLS #H10095194

Oct 21, 2010

Listing Removed

—

Sep 20, 2010

Price Changed

$739,000

$264/sq ft

Sep 5, 2010

Listed

$749,000

$268/sq ft

CRMLS #H10074255

Aug 30, 2010

Listing Removed

—

Jul 12, 2010

Listed

$699,000

$250/sq ft

Public Records

Sep 19, 1997

Sold

$233,000

$83/sq ft

Public Records

Aug 27, 1980

Sold

$184,000

$66/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$11,631 (+5.4%)

$388,446 + $525,484

$913,930

2024

$11,034 (+2.5%)

$388,446 + $525,484

$913,930

2023

$10,770 (+2.1%)

$380,830 + $515,181

$896,011

2022

$10,546 (+5.6%)

$373,363 + $505,080

$878,443

2021

$9,986 (+1.3%)

$366,043 + $495,177

$861,220

2020

$9,858 (+2.0%)

$358,866 + $455,449

$814,315

2019

$9,668 (+4.0%)

$355,187 + $450,779

$805,966

2018

$9,293 (+4.8%)

$348,223 + $441,941

$790,164

2017

$8,866 (+3.1%)

$334,702 + $424,781

$759,483

2016

$8,599 (−0.6%)

$334,702 + $424,781

$759,483

2015

$8,652

$328,140 + $416,452

$744,592

2014

$8,658 (+1.0%)

$316,881 + $402,162

$719,043

2012

$8,568 (+2.0%)

$315,449 + $400,345

$715,794

2011

$8,402 (+111.7%)

$309,264 + $392,496

$701,760

2010

$3,970 (+0.5%)

$303,200 + $384,800

$688,000

2009

$3,948 (+2.9%)

$98,954 + $210,289

$309,243

2008

$3,839

$99,190 + $210,789

$309,979

Tax history for 21425 Chirping Sparrow Rd

Year

Property tax

Land + Additions

Assessment*

2025

$11,631 (+5.4%)

$388,446 + $525,484

$913,930

2024

$11,034 (+2.5%)

$388,446 + $525,484

$913,930

2023

$10,770 (+2.1%)

$380,830 + $515,181

$896,011

2022

$10,546 (+5.6%)

$373,363 + $505,080

$878,443

2021

$9,986 (+1.3%)

$366,043 + $495,177

$861,220

2020

$9,858 (+2.0%)

$358,866 + $455,449

$814,315

2019

$9,668 (+4.0%)

$355,187 + $450,779

$805,966

2018

$9,293 (+4.8%)

$348,223 + $441,941

$790,164

2017

$8,866 (+3.1%)

$334,702 + $424,781

$759,483

2016

$8,599 (−0.6%)

$334,702 + $424,781

$759,483

2015

$8,652

$328,140 + $416,452

$744,592

2014

$8,658 (+1.0%)

$316,881 + $402,162

$719,043

2012

$8,568 (+2.0%)

$315,449 + $400,345

$715,794

2011

$8,402 (+111.7%)

$309,264 + $392,496

$701,760

2010

$3,970 (+0.5%)

$303,200 + $384,800

$688,000

2009

$3,948 (+2.9%)

$98,954 + $210,289

$309,243

2008

$3,839

$99,190 + $210,789

$309,979

*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

10,600 Sq. Ft.

Year renovated

1985

Sq. Ft.

3,030

Year built

1980

Style

Single Family Residential

County

Los Angeles County

APN

8714021030

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

Laundry Information
Has Laundry
Individual Room

Kitchen Information
Appliances: Dishwasher, Garbage Disposal, Oven, Range
Has Appliances

Bathroom Information
# of Baths (Full): 3

Cooling Information
Central
Has Cooling

Room Information
Bonus Room, Family Room, Living Room, Primary Bedroom, Main Floor Bedroom, Walk-In Pantry, Walk-In Closet, Separate Family Room, Office

Fireplace Information
Family Room
Has Fireplace

Heating Information
Central Furnace
Has Heating

Interior Features
Levels: Two
Window Features: Double Pane Windows

Exterior

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

Lot Information
Lot Size Source: Assessor's Data
Lot Features: Sprinklers In Front, Sprinklers In Rear, Sprinklers On Side, Sprinklers Timer

Property Information
Living Area Source: Assessor's Data
Parcel Number: 8714021030
Property Condition: Turnkey
Has View

Utilities

Utilities Information
Water Source: District/Public

Location

Neighborhood Information
Community Features: Curbs

School Information
High School District: Walnut Valley Unified

Location Information
Latitude: 33.96333000
Longitude: -117.84119400
Directions: See Google Map

Public facts

Beds: 5
Baths: 4.0
Sq. Ft.: 3,030
Stories: —
Lot Size: 10,600 square feet
Style: Single Family Residential
Year Built: 1980
Year Renovated: 1985
County: Los Angeles County
APN: 8714021030

Home facts updated by county records on Aug 30, 2026

Other

Miscellaneous Information
Lease Considered

Listing Information
Days Active in MLS: 72
Continuous Days Active in MLS: 72

Listing Agent Information
List Agent First Name: Jack
List Agent Last Name: Ma
Co-List Agent First Name: Jennifer
Co-List Agent Last Name: Chai

Listing Office Information
List Office Name: GOGO REALTORS
Co-List Office Name: GoGo Realtors Inc.

Selling Agent Information
Buyer Agent First Name: Kain
Buyer Agent Last Name: Tan

Selling Office Information
Buyer Office Name: ReMax 2000 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 • 2.0mi

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

5 days above 98° expected this year, 14 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

$1.42M – $1.72M

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New listings for sale in 91765

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Rubio Real Estate

Home values near 21425 Chirping Sparrow Rd

Data from public records.

Address	Redfin Estimate
21505 Chirping Sparrow Rd, Diamond Bar, CA 4 Beds \| 3 Baths \| 2630 Sq. Ft.	$1,270,196
21445 Chirping Sparrow Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 2037 Sq. Ft.	$1,183,366

Address	Redfin Estimate
21471 Chirping Sparrow Rd, Diamond Bar, CA 4 Beds \| 2 Baths \| 2037 Sq. Ft.	$1,188,410
21435 Chirping Sparrow Rd, Diamond Bar, CA 4 Beds \| 3 Baths \| 2697 Sq. Ft.	$1,431,883

Address	Redfin Estimate
21455 Chirping Sparrow Rd, Diamond Bar, CA 5 Beds \| 3 Baths \| 3159 Sq. Ft.	$1,507,576
21415 Chirping Sparrow Rd, Diamond Bar, CA 4 Beds \| 3 Baths \| 2697 Sq. Ft.	$1,370,584

Property information provided by CRMLS when last listed in 2010. This data may not match . Learn more.

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