21090 Chirping Sparrow Rd, Diamond Bar, CA 91765

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Off Market May 2021 for $1M

$1,448,421

Est. refi paymentEst. refi $5,590/mo

•

2,264

sq ft

21090 Chirping Sparrow Rd, Diamond Bar, CA 91765

About this home

Situated on a gentle knoll in the heart of Diamond Bar is the lovely, move-in ready home with Walnut Valley Schools. As you enter through the iron double doors and formal entry, you are taken back by the grand staircase, high ceilings and tons of natural light throughout. A sunken living room to the left with two picture windows and separate formal dining room. Charming family room with fireplace and built-ins which is open to the wonderful kitchen with a large center island with breakfast bar, granite counters, dishwasher and gas stove. Conveniently located bedroom and remodeled full bath on the lower level, laundry room with storage and access to the three car attached garage. Upstairs you will find three bedrooms: A primary bedroom with a walk-in closet, dual sinks, tub and a privacy toilet. Two additional bedrooms with organizers and a full hall bathroom. The backyard has a lovely heated pool and spa, plenty of grassy area and is enveloped with trees and nature which provides you with plenty of privacy. Just some of the features of this lovely home are: Newer HVAC, recessed lights, tile, carpet and wood floors, tile roof, alarm, sprinklers, whole house filter and so much more.

Single-familyProperty Type

1983Year Built

9,095 sq ftLot Size

$640Est. Price/Sq.Ft.

3 garage spacesParking

Seller's agent

Seta Chorbajian DRE #01419425Redfin Corporation

Bought with Xin Zhang •DRE #01956884 • Keller Williams Signature Realty

Redfin checked: 2 minutes ago

•Source:CRMLS #PF21050264

Redfin Estimate

$1,448,421

$367K since sold in May 2021$4,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 4.9% higher than the average sale price ($1.38M) 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 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 FEB 6, 2026
$1,330,000
D
4 beds3 baths2,302 sq ft
21307 Chirping Sparrow Rd, Diamond Bar, CA 91765
SOLD MAY 14, 2026
$1,330,000
E
4 beds3 baths2,037 sq ft
3357 Bent Twig, Diamond Bar, CA 91765

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Earn from this home

Sell

$592,878

Est. take-home

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Refinance

Est. cash available

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Rent

$3,847/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 14 HRS AGO
$1,648,000
4 beds3 baths3,212 sq ft
3315 Hawkwood, Diamond Bar, CA 91765
First Team Real Estate
NEW 14 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 21090 Chirping Sparrow Rd

Date

Event

Price

Public Records

May 13, 2021

Sold

$1,081,000

$477/sq ft

CRMLS #PF21050264

May 13, 2021

Sold

$1,080,999

$477/sq ft

Apr 1, 2021

Pending

—

Mar 25, 2021

Contingent

—

Mar 12, 2021

Listed

$898,000

$397/sq ft

CRMLS #H309292

Oct 30, 2003

Sold

$503,500

$222/sq ft

Aug 25, 2003

Listed

$498,500

$220/sq ft

Public Records

Apr 12, 1996

Sold

$283,000

$125/sq ft

Public Records

Feb 11, 1987

Sold

$235,000

$104/sq ft

Public Records

Mar 22, 1984

Sold

$178,000

$79/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$14,768 (+5.2%)

$702,497 + $467,609

$1,170,106

2024

$14,033 (+3.2%)

$702,497 + $467,609

$1,170,106

2023

$13,595 (+2.1%)

$688,723 + $458,441

$1,147,164

2022

$13,314 (+63.1%)

$675,219 + $449,452

$1,124,671

2021

$8,164 (+1.3%)

$661,980 + $440,640

$1,102,620

2020

$8,059 (+2.0%)

$362,919 + $298,421

$661,340

2019

$7,904 (+3.9%)

$359,198 + $295,362

$654,560

2018

$7,607 (+4.8%)

$352,155 + $289,571

$641,726

2017

$7,259 (+3.1%)

$338,481 + $278,328

$616,809

2016

$7,041 (−0.6%)

$338,481 + $278,328

$616,809

2015

$7,083

$331,845 + $272,871

$604,716

2014

$7,090 (+1.1%)

$320,459 + $263,509

$583,968

2012

$7,013 (+3.0%)

$319,011 + $262,319

$581,330

2011

$6,811 (+0.8%)

$312,756 + $257,176

$569,932

2010

$6,760 (+0.3%)

$306,624 + $252,134

$558,758

2009

$6,742 (+2.7%)

$304,333 + $250,250

$554,583

2008

$6,563

$305,056 + $250,845

$555,901

Tax history for 21090 Chirping Sparrow Rd

Year

Property tax

Land + Additions

Assessment*

2025

$14,768 (+5.2%)

$702,497 + $467,609

$1,170,106

2024

$14,033 (+3.2%)

$702,497 + $467,609

$1,170,106

2023

$13,595 (+2.1%)

$688,723 + $458,441

$1,147,164

2022

$13,314 (+63.1%)

$675,219 + $449,452

$1,124,671

2021

$8,164 (+1.3%)

$661,980 + $440,640

$1,102,620

2020

$8,059 (+2.0%)

$362,919 + $298,421

$661,340

2019

$7,904 (+3.9%)

$359,198 + $295,362

$654,560

2018

$7,607 (+4.8%)

$352,155 + $289,571

$641,726

2017

$7,259 (+3.1%)

$338,481 + $278,328

$616,809

2016

$7,041 (−0.6%)

$338,481 + $278,328

$616,809

2015

$7,083

$331,845 + $272,871

$604,716

2014

$7,090 (+1.1%)

$320,459 + $263,509

$583,968

2012

$7,013 (+3.0%)

$319,011 + $262,319

$581,330

2011

$6,811 (+0.8%)

$312,756 + $257,176

$569,932

2010

$6,760 (+0.3%)

$306,624 + $252,134

$558,758

2009

$6,742 (+2.7%)

$304,333 + $250,250

$554,583

2008

$6,563

$305,056 + $250,845

$555,901

*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

9,095 Sq. Ft.

Year renovated

1983

Sq. Ft.

2,264

Year built

1983

Style

Single Family Residential

County

Los Angeles County

APN

8714019005

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: 3
Attached Garage
# of Garage Spaces: 3
Driveway
Has Parking
# of Parking Spaces: 6

Interior

Laundry Information
Has Laundry
Electric Dryer Hookup, Gas & Electric Dryer Hookup, Individual Room, Inside, Washer Hookup

Kitchen Information
Appliances: Built In Range, Self Cleaning Oven, Dishwasher, Double Oven, Electric Oven, Garbage Disposal, Gas Cooktop, Range/Stove Hood, Water Purifier
Has Appliances
Breakfast Counter / Bar, Formal Dining Room
Granite Counters, Kitchen Island, Kitchen Open to Family Room, Pots & Pan Drawers, Remodeled Kitchen

Bathroom Information
# of Baths (Full): 3
Bathtub, Low Flow Shower, Shower, Shower in Tub, Double sinks in bath(s), Double Sinks In Master Bath, Exhaust fan(s), Granite Counters, Privacy toilet door, Remodeled, Upgraded

Cooling Information
Central
Has Cooling

Room Information
Family Room, Kitchen, Laundry, Living Room, Main Floor Bedroom, Primary Bathroom, Primary Bedroom, Walk-In Closet

Fireplace Information
Family Room, Gas
Has Fireplace

Flooring Information
Carpet, Stone, Tile

Heating Information
Central Furnace
Has Heating

Interior Features
Granite Counters, High Ceilings (9 Feet+), Open Floor Plan, Recessed Lighting, Sunken Living Room, Two Story Ceilings
Levels: Two
Main Level Bathrooms: 1
Main Level Bedrooms: 1
Spa Features: Private, In Ground
Has Spa

Exterior

Exterior Information
Structure Type: House
Roof: Spanish Tile
Fencing: Blockwall, Privacy
Has Fence

Exterior Features
Pool Features: Private, Fenced, Heated, Heated with Gas, In Ground, Waterfall
Has Pool

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

Property Information
Total # of Units: 1
Common Walls: No Common Walls
Parcel Number: 8714019005
Total # of Stories: 2
Has View
Year Built Source: Assessor

Financial

Assesments Information
Assessments: Unknown

Utilities

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

Location

Neighborhood Information
Community Features: Biking, Curbs, Dog Park, Park

School Information
High School District: Walnut Valley Unified

Location Information
Latitude: 33.96186100
Longitude: -117.84632200
Directions: Running Branch Road
Zoning: LCR19000*

Public facts

Beds: 4
Baths: 3.0
Sq. Ft.: 2,264
Stories: —
Lot Size: 9,095 square feet
Style: Single Family Residential
Year Built: 1983
Year Renovated: 1983
County: Los Angeles County
APN: 8714019005

Home facts updated by county records on Aug 30, 2026

Other

Miscellaneous Information
Exclusions: sub zero refrigerator, refrigerator, washer, dryer, outdoor bbq, mounted tv, pool/spa toys, window coverings

Listing Information
Days Active in MLS: 11
Continuous Days Active in MLS: 11

Listing Agent Information
List Agent First Name: Seta
List Agent Last Name: Chorbajian

Listing Office Information
List Office Name: Redfin Corporation

Selling Agent Information
Buyer Agent First Name: Xin
Buyer Agent Last Name: Zhang

Selling Office Information
Buyer Office Name: Keller Williams Signature

Around this home

Schools

Castle Rock Elementary School

Public K-5 • Assigned • 0.7mi

10/10

South Pointe Middle School

Public 6-8 • Assigned • 2.1mi

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
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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

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

$1.38M – $1.67M

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Home values near 21090 Chirping Sparrow Rd

Data from public records.

Address	Redfin Estimate
21070 Chirping Sparrow Rd, Diamond Bar, CA 4 Beds \| - Baths \| 2338 Sq. Ft.	$1,354,152
21010 Chirping Sparrow Rd, Diamond Bar, CA 4 Beds \| 3 Baths \| 2288 Sq. Ft.	$1,242,969

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

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

Property information provided by CRMLS when last listed in 2021. This data may not match . Learn more.

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