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

Off market oct 2002 for $420K

$1,336,400

Est. refi paymentEst. refi $2,168/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

$572Est. 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: 2 minutes ago

•Source:CRMLS #C251427

Redfin Estimate

$1,336,400

$916K since sold in October 2002$12K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 2.5% lower than the average sale price ($1.37M) 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 OCT 6, 2026
$1,275,000
B
4 beds3 baths3,019 sq ft
3581 Hawkwood, Diamond Bar, CA 91765
The Agency
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
$1,330,000
E
4 beds3 baths2,302 sq ft
21307 Chirping Sparrow Rd, Diamond Bar, CA 91765

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Earn from this home

Sell

$1,161,922

Est. take-home

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Refinance

Est. cash available

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Rent

$3,812/mo

Redfin rental estimate

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Market trends in 91765, CA

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

97.8%

0.8% MoM

Median sale price

$1.1M

$12K MoM

Avg. days on market

61d

18 days MoM

Recently sold homes

3 MoM

New listings for sale

NEW 2 MINS AGO
2945 Steeplechase, Diamond Bar, CA 91765
$4,200,000
5 beds6 baths6,257 sq ft
2945 Steeplechase, Diamond Bar, CA 91765
NEW 2 MINS AGO
1160 N Del Sol, Diamond Bar, CA 91765
$1,128,800
4 beds2 baths1,994 sq ft
1160 N Del Sol, Diamond Bar, CA 91765
NEW 15 HRS AGO
$555,000
2 beds1 bath914 sq ft
21755 Laurelrim Unit B, Diamond Bar, CA 91765
Aramis Realty Group Inc.
$3,070,000
6 beds8 baths7,884 sq ft
23240 Ridge Line, Diamond Bar, CA 91765
$1,249,000
4 beds2.5 baths2,364 sq ft
24168 Avenida Rancheros, Diamond Bar, CA 91765
$445,000
2 beds2 baths794 sq ft
22769 Lakeway Dr #433, Diamond Bar, CA 91765
$528,000
2 beds2.5 baths1,265 sq ft
420 Golden Springs Dr, Diamond Bar, CA 91765
$590,000
2 beds2 baths999 sq ft
24202 Sylvan Glen Rd Unit E, Diamond Bar, CA 91765
3D WALKTHROUGH
$1,698,000
5 beds3.5 baths3,378 sq ft
1920 Flint Rock Rd, Diamond Bar, CA 91765
$580,000
3 beds1.5 baths1,010 sq ft
1250 S Diamond Bar Unit B, 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%)

$321,894 + $298,551

$620,445

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%)

$321,894 + $298,551

$620,445

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 Oct 7, 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 Oct 7, 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

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

$1.27M – $1.54M

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Nearby similar homes

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New listings for sale in 91765

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NEW 2 MINS AGO

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NEW 15 HRS AGOVIDEO TOUR

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Aramis Realty Group Inc.

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6 beds8 baths7,884 sq ft

23240 Ridge Line, Diamond Bar, CA 91765

$1,249,000

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24168 Avenida Rancheros, Diamond Bar, CA 91765

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22769 Lakeway Dr #433, Diamond Bar, CA 91765

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2 beds2.5 baths1,265 sq ft

420 Golden Springs Dr, Diamond Bar, CA 91765

$590,000

2 beds2 baths999 sq ft

24202 Sylvan Glen Rd Unit E, Diamond Bar, CA 91765

3D WALKTHROUGH

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1920 Flint Rock Rd, Diamond Bar, CA 91765

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.	$1,421,165
21010 Chirping Sparrow Road, Diamond Bar, CA 4 Beds \| 3 Baths \| 2288 Sq. Ft.	$1,229,556

Address	Redfin Estimate
21050 Chirping Sparrow Road, Diamond Bar, CA 3 Beds \| 3 Baths \| 1931 Sq. Ft.	$1,338,598
21011 Chirping Sparrow Road, Diamond Bar, CA 5 Beds \| 3 Baths \| 2880 Sq. Ft.	$1,411,472

Address	Redfin Estimate
21030 Chirping Sparrow Road, Diamond Bar, CA 4 Beds \| 4 Baths \| 3166 Sq. Ft.	$1,380,822
21033 Chirping Sparrow Road, Diamond Bar, CA 4 Beds \| 3 Baths \| 2558 Sq. Ft.	$1,238,851

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

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 91765, CA

Sale history for 21070 CHIRPING SPARROW Rd

Tax history for 21070 CHIRPING SPARROW Rd

Public record

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 91765

Home values near 21070 CHIRPING SPARROW Rd

More real estate resources