Google street view image for 21070 CHIRPING SPARROW Rd, Diamond Bar, CA 91765

Off Market Oct 2002 for $420K

$1,354,152

Est. refi paymentEst. refi $2,069/mo

•

— ba

•

2,338

sq ft

21070 CHIRPING SPARROW Rd, Diamond Bar, CA 91765

About this home

Single-familyProperty Type

1983Year Built

9,600 sq ftLot Size

$579Est. Price/Sq.Ft.

3 car garageParking

Listed by YATE WANG •DRE #00979118 • FIRST TEAM REAL ESTATE

Bought with YATE WANG •DRE #00979118 • COLDWELL BANKER-METR

Redfin checked: a minute ago

•Source:CRMLS #C251427

Redfin Estimate

$1,354,152

$934K since sold in October 2002$5,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 2.9% lower than the average sale price ($1.39M) of 5 comparable homes.

SOLD JUL 27, 2026
$1,315,000
A
4 beds3 baths2,336 sq ft
3595 Hawkwood, Diamond Bar, CA 91765
SOLD FEB 6, 2026
$1,330,000
B
4 beds3 baths2,302 sq ft
21307 Chirping Sparrow Rd, 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 MAY 12, 2026
$1,680,000
D
4 beds3 baths2,697 sq ft
21535 Chirping Sparrow, Diamond Bar, CA 91765
SOLD FEB 6, 2026
$1,396,888
E
4 beds3 baths2,334 sq ft
3628 Hawkwood, Diamond Bar, CA 91765

Claim this home to receive a free report every month with insights on the changing estimate.

Earn from this home

Sell

$1,175,713

Est. take-home

List your home with Redfin and save $6,771

Refinance

Est. cash available

Get cash now or lower your monthly rate

Rent

$3,721/mo

Redfin rental estimate

List your home for rent

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 10 HRS AGO
$1,648,000
4 beds3 baths3,212 sq ft
3315 Hawkwood, Diamond Bar, CA 91765
First Team Real Estate
NEW 11 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 21070 CHIRPING SPARROW Rd

Year

Property tax

Land + Additions

Assessment*

2025

$8,161 (+6.2%)

$315,583 + $292,698

$608,281

2024

$7,684 (+3.8%)

$315,583 + $292,698

$608,281

2023

$7,406 (+2.1%)

$309,396 + $286,959

$596,355

2022

$7,252 (+2.0%)

$303,330 + $281,333

$584,663

2021

$7,113 (+1.3%)

$297,383 + $275,817

$573,200

2020

$7,024 (+1.9%)

$291,552 + $270,409

$561,961

2019

$6,891 (+4.1%)

$288,563 + $267,637

$556,200

2018

$6,620 (+4.7%)

$282,905 + $262,390

$545,295

2017

$6,321 (+3.1%)

$271,920 + $252,202

$524,122

2016

$6,129 (−0.6%)

$271,920 + $252,202

$524,122

2015

$6,165 (−0.1%)

$266,589 + $247,257

$513,846

2014

$6,174 (+1.1%)

$257,442 + $238,773

$496,215

2012

$6,107 (+2.9%)

$256,279 + $237,694

$493,973

2011

$5,932 (+0.8%)

$251,254 + $233,034

$484,288

2010

$5,887 (+0.3%)

$246,328 + $228,465

$474,793

2009

$5,869 (+2.7%)

$244,488 + $226,758

$471,246

2008

$5,713

$245,069 + $227,297

$472,366

Tax history for 21070 CHIRPING SPARROW Rd

Year

Property tax

Land + Additions

Assessment*

2025

$8,161 (+6.2%)

$315,583 + $292,698

$608,281

2024

$7,684 (+3.8%)

$315,583 + $292,698

$608,281

2023

$7,406 (+2.1%)

$309,396 + $286,959

$596,355

2022

$7,252 (+2.0%)

$303,330 + $281,333

$584,663

2021

$7,113 (+1.3%)

$297,383 + $275,817

$573,200

2020

$7,024 (+1.9%)

$291,552 + $270,409

$561,961

2019

$6,891 (+4.1%)

$288,563 + $267,637

$556,200

2018

$6,620 (+4.7%)

$282,905 + $262,390

$545,295

2017

$6,321 (+3.1%)

$271,920 + $252,202

$524,122

2016

$6,129 (−0.6%)

$271,920 + $252,202

$524,122

2015

$6,165 (−0.1%)

$266,589 + $247,257

$513,846

2014

$6,174 (+1.1%)

$257,442 + $238,773

$496,215

2012

$6,107 (+2.9%)

$256,279 + $237,694

$493,973

2011

$5,932 (+0.8%)

$251,254 + $233,034

$484,288

2010

$5,887 (+0.3%)

$246,328 + $228,465

$474,793

2009

$5,869 (+2.7%)

$244,488 + $226,758

$471,246

2008

$5,713

$245,069 + $227,297

$472,366

*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

9,685 Sq. Ft.

Year renovated

1983

Sq. Ft.

2,336

Year built

1983

Style

Single Family Residential

County

Los Angeles County

APN

8714019006

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
Direct Garage Access, Garage Door Opener
Has Parking

Interior

Laundry Information
Has Laundry
In Garage

Kitchen Information
Area, Formal Dining Room

Cooling Information
Central
Has Cooling

Room Information
Entry, Family Room, Living Room, Walk-In Closet

Fireplace Information
Family Room
Has Fireplace

Flooring Information
Wood

Heating Information
Forced Air
Has Heating

Interior Features
Attic Fan
Levels: Two
Window Features: Blinds

Exterior

Exterior Information
Fencing: Blockwall, Wrought Iron
Has Fence

Foundation Information
Foundation Details: Concrete Slab

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

Lot Information
Lot Size Source: Assessor's Data
Lot Features: Lot 6500-9999, Sprinklers In Front, Sprinklers In Rear, Sprinklers Timer, Yard

Property Information
Living Area Source: Assessor's Data
Parcel Number: 8714019006
Attached Property
Property Condition: Termite Clearance

Financial

Assesments Information
Assessments: Unknown

Utilities

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

Location

School Information
High School District: Walnut Valley Unified

Location Information
Latitude: 33.96210700
Longitude: -117.84629200
Road Frontage Type: Alley Access

Public facts

Beds: 4
Baths: 3.0
Sq. Ft.: 2,336
Stories: —
Lot Size: 9,685 square feet
Style: Single Family Residential
Year Built: 1983
Year Renovated: 1983
County: Los Angeles County
APN: 8714019006

Home facts updated by county records on Aug 30, 2026

Other

Miscellaneous Information
Exclusions: CARPET & PAINTING ALLOWANCE AT CLOSE OF ESCROW.

Listing Information
Days Active in MLS: 24
Continuous Days Active in MLS: 24

Listing Agent Information
List Agent First Name: YATE
List Agent Last Name: WANG

Listing Office Information
List Office Name: FIRST TEAM SNS REAL

Selling Agent Information
Buyer Agent First Name: YATE
Buyer Agent Last Name: WANG

Selling Office Information
Buyer Office Name: COLDWELL BANKER-METR

Around this home

Schools

Castle Rock Elementary School

Public K-5 • Assigned • 0.7mi

10/10

South Pointe Middle School

Public 6-8 • Assigned • 2.0mi

10/10

Diamond Bar High School

Public 9-12 • Assigned • 1.4mi

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
Was this helpful?

Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

5/10 Fire Factor

7% 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

$1.29M – $1.56M

Reach more buyers when you sell with Redfin. Save up to $13,542 in fees. 3 minutes to get started.

Need the cash from your home fast? Sell to .

Nearby similar homes

NEW 10 HRS AGO

$1,648,000

4 beds3 baths3,212 sq ft

3315 Hawkwood, Diamond Bar, CA 91765

First Team Real Estate

$1,058,688

3 beds2 baths1,541 sq ft

1966 Fern Hollow Dr, Diamond Bar, CA 91765

$6,500,000

11 beds12 baths17,241 sq ft

22588 Ridge Line Rd, Diamond Bar, CA 91765

ReMax 2000 Realty

OPEN SAT, 12PM TO 3PM

$995,000

4 beds2 baths1,521 sq ft

3525 Castle Rock, Diamond Bar, CA 91765

$1,489,000

4 beds3 baths2,986 sq ft

2611 Rudy, Rowland Heights, CA 91748

3D & VIDEO TOUR

$3,980,000

8 beds8.5 baths8,264 sq ft

2820 Shadow Canyon Dr, Diamond Bar, CA 91765

New listings for sale in 91765

NEW 10 HRS AGO

$1,648,000

4 beds3 baths3,212 sq ft

3315 Hawkwood, Diamond Bar, CA 91765

First Team Real Estate

NEW 11 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 3PM3D WALKTHROUGH

$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 2PM3D WALKTHROUGH

$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

Home values near 21070 CHIRPING SPARROW Rd

Data from public records.

Address	Redfin Estimate
21090 Chirping Sparrow Road, Diamond Bar, CA 4 Beds \| 3 Baths \| 2264 Sq. Ft.	$1,448,421
21010 Chirping Sparrow Road, Diamond Bar, CA 4 Beds \| 3 Baths \| 2288 Sq. Ft.	$1,242,969

Address	Redfin Estimate
21050 Chirping Sparrow Road, Diamond Bar, CA 3 Beds \| 3 Baths \| 1931 Sq. Ft.	$1,304,080
21011 Chirping Sparrow Road, Diamond Bar, CA 5 Beds \| 3 Baths \| 2880 Sq. Ft.	$1,443,234

Address	Redfin Estimate
21030 Chirping Sparrow Road, Diamond Bar, CA 4 Beds \| 4 Baths \| 3166 Sq. Ft.	$1,405,200
21033 Chirping Sparrow Road, Diamond Bar, CA 4 Beds \| 3 Baths \| 2558 Sq. Ft.	$1,212,516

Property information provided by CRMLS when last listed in 2002. This data may not match . Learn more.

More real estate resources

Neighborhoods
Cities
Zip Codes
Popular Searches

Pathfinder homes for sale
Montefino homes for sale
Alameda Corridor homes for sale
Phillips Ranch homes for sale
Mount San Antonio College homes for sale

Download the Redfin App on the Apple App Store

Download the Redfin App from the Google Play Store

Join us

Become an Agent

Get referrals

Careers

Find homes faster

About us

Find us

Subsidiaries

Affiliated Business

Countries

United States

Canada

Updated September 2025: By searching, you agree to the Terms of Use, and Privacy Policy.

Do not sell or share my personal information.

REDFIN and all REDFIN variants, WALK SCORE, and the R logos, are trademarks of Redfin Corporation, registered or pending in the USPTO.

California DRE #01521930

Redfin is licensed to do business in New York as Redfin Real Estate. NY Standard Operating Procedures

New Mexico Real Estate Licenses

TREC: Info About Brokerage Services, Consumer Protection Notice

All mortgage lending products and information are provided by Rocket Mortgage, LLC | NMLS #3030; www.NMLSConsumerAccess.org. Licensed in 50 states. This site is not authorized by the New York State Department of Financial Services for mortgage solicitation or loan applications activities related to properties located in the State of New York.

Redfin Corporation is an affiliated business of Rocket Limited Partnership. Each company, and their subsidiaries, are separate legal entities operated and managed through its own management and governance structures.

If you are using a screen reader, or having trouble reading this website, please call Redfin Customer Support for help at 1-844-759-7732.

REDFIN IS COMMITTED TO AND ABIDES BY THE FAIR HOUSING ACT AND EQUAL OPPORTUNITY ACT. READ REDFIN'S FAIR HOUSING POLICY AND THE NEW YORK STATE FAIR HOUSING NOTICE.

GreatSchools Ratings provided by GreatSchools.org.

91709 homes for sale
91765 homes for sale
91789 homes for sale
91766 homes for sale
91768 homes for sale

Houses for rent in Diamond Bar	Agents near me	Irvine, CA homes for sale	Diamond Bar Housing Market
Houses for sale near me	San Diego, CA homes for sale	Fremont, CA homes for sale
Land for sale near me	San Francisco, CA homes for sale	Pasadena, CA homes for sale
Open Houses near me	Los Angeles, CA homes for sale	Diamond Bar Property Records
Condos for sale near me	San Jose, CA homes for sale	CA New Listings

Irvine homes for sale
Pasadena homes for sale
Long Beach homes for sale