Listed by Pedro Torres Jr. •DRE #02082088 • First Class Platinum Brokers

Contact: 323-440-8113

For sale

$1,399,998

Est. $9,521/mo —

•

3,073

sq ft

21380 Chirping Sparrow Rd, Diamond Bar, CA 91765

About this home

Prime South Diamond Bar Fixer with Endless Potential in Award-Winning School District! Brought to market with incredible potential, this spacious two-story home located in a highly desirable South Diamond Bar neighborhood is ready for your creative vision and personal touches. Situated on a generous 0.37-acre lot with no common walls, this floor plan offers 3,073 square feet of comfortable living space featuring 5 bedrooms, 3 bathrooms, and a massive upstairs bonus room. The main level welcomes you with high cathedral ceilings at the entry and living room, a formal dining area, a convenient main-floor bedroom with a full bath, and an open-concept kitchen flowing directly into the family room with a cozy fireplace and French doors. Additional highlights include an attached 3-car garage (featuring a permitted bonus study room conversion space). Step outside to discover a private, sprawling backyard complete with a pool/spa, covered patio, and an elevated hillside path leading up to a gazebo with incredible local views. While the home requires cosmetic updating and TLC throughout, its solid bones, prime location just minutes from top-rated schools (Castle Rock Elementary, South Pointe Middle, and Diamond Bar High), shopping plazas (including H Mart), and easy access to the 57 and 60 freeways make this a rare diamond in the rough. Bring your contractors, designers, and imagination to transform this property into your dream estate!

Single-familyProperty Type

1980Year Built

0.37 acresLot Size

$456Price/Sq.Ft.

3 car garageParking

Listing updated: Sep 19, 2026 at 02:21pm

Redfin checked: a minute ago

•Source:CRMLS #DW26185739

Payment calculator

$9,521 per month

Principal and interest$7,736

Property taxes

$1,458

HOA dues

Home insurance

$327

Utilities

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5 minutes to get started. No credit impact.

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See this home in person

Open houses

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Around this home

Schools

K - 12
Preschool & daycare

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 • 1.3mi

10/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Offer insights

21380 Chirping Sparrow Rd · $1,399,998

Strong offer

$1.4M and above

75% chance or better to win

Why $1.4M+ is a strong offer

DAYS ON MARKET

The average home goes pending in 46 days.

SALE-TO-LIST

Most homes are selling 0% below list price.

About offer insights

Property details

Interior
Exterior
Finance

Interior features
High ceilings (9 feet+)
Recessed lighting
Two-story ceilings
Open floor plan
Double pane windows with blinds and screens
Foyer
Bonus room
Converted bedroom
Family room

Bedrooms
All bedrooms upstairs
Main floor primary bedroom
Main floor bedroom
Walk-in closet

Bathrooms
Three full bathrooms
Double sinks in primary bath
Separate tub and shower
Walk-in shower
Main floor full bath
Bathtub

Kitchen
Garbage disposal
Microwave
Free-standing range
Dishwasher
Formal dining room
Breakfast nook
Open to living areas

Laundry & utility
Dedicated laundry room

Flooring
Tile
Carpet
Wood

Heating & cooling
Central cooling
Natural gas heating
Forced air
Central furnace
Has heating and cooling

Sale and tax history for 21380 Chirping Sparrow Rd

Sale History
Tax History

Date

Event

Price

CRMLS #DW26185739

Sep 9, 2026

Price Changed

$1,399,998

$456/sq ft

Aug 24, 2026

Listed

$1,399,999

$456/sq ft

CRMLS #TR23183261

Jun 15, 2024

Rental Removed

$5,500

$2/sq ft

Oct 4, 2023

Listed for Rent

$5,500

$2/sq ft

CRMLS #TR23083825

Jul 5, 2023

Sold

$1,350,000

$439/sq ft

Jun 14, 2023

Pending

—

May 15, 2023

Listed

$1,379,900

$449/sq ft

Gorgeous home with cozy red tile roof in the highly desirable South Diamond Bar area, with the top-ranking Walnut Valley School District. This beautiful property has 5 bedrooms, plus a huge bonus room upstairs. Cathedral ceiling at entrance and living room area, dual panel windows throughout the entire house . One bedroom downstairs with remodeling and a full bath. 3-car garage, additional study room approximately 286 sq ft with permitted. Open, bright and airy, nice floor plan in this home tract. Large family room with a fireplace, French doors at family room. Impressive and entertaining backyard with solar heated saltwater pool/spa, fish pond, relaxing scenery with covered patio and leading you up to the hill at the gazebo and enjoy the view of the area. Paid off solar system + NEW exterior paint + fumigation done. Close to shopping center, major supermarkets HMART and beloved restaurants, banks, Starbucks, all retail shops. Only a couple minutes to drive to all schools, Easy access to 57 and 60 Freeways.

CRMLS #TR23059429

May 15, 2023

Listing Removed

—

May 2, 2023

Price Changed

$1,450,000

$472/sq ft

Apr 17, 2023

Listed

$1,499,000

$488/sq ft

CRMLS #H09106448

Dec 18, 2009

Sold

$738,000

$240/sq ft

Dec 1, 2009

Pending

—

Nov 5, 2009

Price Changed

$759,000

$247/sq ft

Oct 2, 2009

Listed

$768,000

$250/sq ft

CRMLS #H09041514

Sep 11, 2009

Listing Removed

—

Sep 2, 2009

Price Changed

$768,900

$250/sq ft

Jul 8, 2009

Price Changed

$788,889

$257/sq ft

May 27, 2009

Price Changed

$809,000

$263/sq ft

Apr 10, 2009

Listed

$829,000

$270/sq ft

CRMLS #H306099

Aug 28, 2003

Sold

$520,000

$169/sq ft

Jun 9, 2003

Listed

$528,000

$172/sq ft

Public Records

Oct 13, 1993

Sold

$265,000

$86/sq ft

Public Records

May 8, 1990

Sold

$365,000

$119/sq ft

Public Records

Sep 20, 1985

Sold

$187,500

$61/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$17,336 (+5.0%)

$855,312 + $549,227

$1,404,539

2024

$16,505 (+45.1%)

$838,542 + $538,458

$1,377,000

2023

$11,373 (+2.6%)

$822,100 + $527,900

$1,350,000

2022

$11,091 (+1.9%)

$412,030 + $503,593

$915,623

2021

$10,882 (+1.3%)

$403,951 + $493,719

$897,670

2020

$10,744 (+1.9%)

$396,031 + $484,039

$880,070

2019

$10,540 (+4.1%)

$391,971 + $479,076

$871,047

2018

$10,122 (+4.8%)

$384,286 + $469,683

$853,969

2017

$9,659 (+3.1%)

$369,364 + $451,446

$820,810

2016

$9,369 (−0.6%)

$369,364 + $451,446

$820,810

2015

$9,428 (−0.1%)

$362,122 + $442,595

$804,717

2014

$9,439 (+1.0%)

$349,697 + $427,408

$777,105

2012

$9,345 (+2.9%)

$348,117 + $425,477

$773,594

2011

$9,078 (+0.7%)

$341,292 + $417,135

$758,427

2010

$9,013 (+13.4%)

$334,600 + $408,956

$743,556

2009

$7,947 (−16.0%)

$332,100 + $405,900

$738,000

2008

$9,460

$357,000 + $291,400

$648,400

Public record

Public record
Zoning

Beds

Baths

Stories

—

Lot width

—

Lot depth

—

Lot size

0.37 Acres

Year renovated

1982

Finished Sq. Ft.

3,073

Unfinished Sq. Ft.

—

Total Sq. Ft.

3,073

Year built

1980

Style

Single Family Residential

County

Los Angeles County

APN

8714022004

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

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

4 days above 98° expected this year, 13 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

82/ 100

Very good sunlight

Sunscore

This home ranks in the top 26% for direct sun exposure in Diamond Bar. There appears to be minimal shading by surrounding buildings, terrain, and vegetation.

8.8 hrs

4.9 hrs

JuneDecember

Provided by Shadowmap

Redfin Estimate for 21380 Chirping Sparrow Rd

$1,351,513

$48K under list price of $1.40M

Nearby comparable homes

The Redfin Estimate uses 6 recent nearby sales, priced between $1.1M to $1.8M.

SOLD SEP 28, 2026
$1,380,000 Last sold price
4 beds3 baths2,712 sq ft
21504 Cold Spring Ln, Diamond Bar, CA 91765
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smaller lot
3 years older
SOLD JUN 29, 2026
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smaller lot
4 years newer
SOLD SEP 28, 2026
$1,110,000 Last sold price
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3147 Fallow Fld, Diamond Bar, CA 91765
$71/sq ft
SOLD JUL 27, 2026
$1,315,000 Last sold price
4 beds3 baths2,336 sq ft
3595 Hawkwood, Diamond Bar, CA 91765
$107/sq ft
smaller lot
4 years newer
SOLD OCT 13, 2026
$1,615,000 Last sold price
5 beds3 baths3,245 sq ft
20466 Sartell Dr, Walnut, CA 91789
$42/sq ft
larger lot
8 years newer
SOLD MAY 19, 2026
$1,768,000 Last sold price
5 beds4 baths3,030 sq ft
3607 Hawkwood, Diamond Bar, CA 91765
RE/MAX Galaxy
$127/sq ft
smaller lot
4 years newer

Rental earnings

Est. $4,197 per month, based on comparable rentals

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Details provided by CRMLS and may not match the public record. Learn more.

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Payment calculator

Affordability tools

See this home in person

Nearby open houses (10)

Around this home

Schools

Lifestyle

Offer insights

Property details

Sale and tax history for 21380 Chirping Sparrow Rd

Public record

Climate risks

Historical weather

Sun exposure

Redfin Estimate for 21380 Chirping Sparrow Rd

Early Access listings

Nearby similar homes

New listings for sale in 91765

More real estate resources