Sold on May 2026

$1,250,000

•

2,150

sq ft

20899 Starshine, Diamond Bar, CA 91789

Track this home’s value and nearby sales activity

About this home

Welcome to this beautifully cared-for home in the heart of Diamond Bar! Located in a highly desirable neighborhood and within the award-winning Walnut Valley Unified School District, this residence offers a rare combination of location, comfort, and functionality. Featuring a well-planned layout with one bedroom downstairs, this home is ideal for multi-generational living, guests, or work-from-home flexibility. High Ceiling in the living Room and Formal Dining Room. The interior showcases wood flooring, spacious living areas, and a large primary bedroom that offers both comfort and privacy. Appraiser Mesured 2150sqft. Tax Record show 1970sqft. Lovingly maintained by the owner and enhanced by professional landscaping, this home offers excellent curb appeal and true move-in ready condition. Enjoy the convenience of being close to schools, parks, shopping, restaurants, and freeway access, all while living in one of Diamond Bar’s most desirable communities. Walking distance to Evergreen Elementary, Diamond Bar High School and Starshine Park and Ronald Reagan Park. Walnut mailing Zip Code and Diamond Bar City.

Single-familyProperty Type

1983Year Built

5,941 sq ftLot Size

$581Price/Sq.Ft.

$61/moHOA Dues

2 car garageParking

Listed by Cathy Cheng •DRE #01270713 • CC Royal Realty

Contact: 626-222-3050

Bought with Ning Wang •DRE #02235972 • Real Broker

Redfin checked: 2 minutes ago

•Source:CRMLS #TR26066727

Redfin Estimate

$1,408,682

$159K since sold in May 2026$6,000 since July

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 8.9% higher than the average sale price ($1.29M) of 6 comparable homes.

SOLD MAY 27, 2026
$1,350,000
A
5 beds3 baths2,186 sq ft
21009 Quail Run, Diamond Bar, CA 91789
SOLD AUG 6, 2026
$1,155,000
B
4 beds3 baths1,886 sq ft
20105 Prosa Ct, Walnut, CA 91789
SOLD MAR 27, 2026
$1,330,000
C
5 beds3 baths2,186 sq ft
20939 Quail Run, Diamond Bar, CA 91789
SOLD JUL 28, 2026
$1,319,000
D
4 beds2.5 baths2,432 sq ft
1321 Glenthorpe, Diamond Bar, CA 91789
Real Broker
SOLD MAY 21, 2026
$1,220,000
E
4 beds2 baths2,000 sq ft
21039 Glenwold Dr, Diamond Bar, CA 91789
WeTrust Realty
SOLD APR 1, 2026
$1,390,000
F
4 beds3 baths2,781 sq ft
20885 Starshine, Diamond Bar, CA 91789

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Market trends in 91789, CA

Last updated July 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

99.2%

+0.0% MoM

Median sale price

$1.2M

$23K MoM

Avg. days on market

33d

13 days MoM

Recently sold homes

1 MoM

New listings for sale

OPEN SAT, 12PM TO 5PM
$1,298,880
4 beds2.5 baths2,074 sq ft
1310 Heidelberg Ave, Walnut, CA 91789
COMING SOON
$1,760,000
4 beds3 baths2,646 sq ft
625 N Pacer Ct, Walnut, CA 91789
OPEN SUN, 1PM TO 5PM
20031 Wildbloom Cir, Walnut, CA 91789
$1,899,000
4 beds3 baths2,575 sq ft
20031 Wildbloom Cir, Walnut, CA 91789
NEW 28 HRS AGO
$1,768,800
4 beds3 baths2,477 sq ft
880 Gartel, Walnut, CA 91789
OPEN SAT, 11AM TO 3PM
$1,260,000
4 beds3 baths2,028 sq ft
1123 Bain Ave, Diamond Bar, CA 91789
OPEN SAT, 1PM TO 5PM
$1,480,000
4 beds3 baths2,479 sq ft
357 Windemere, Walnut, CA 91789
$950,000
5 beds4 baths1,918 sq ft
20316 Flintgate, Diamond Bar, CA 91789
OPEN SUN, 2:30PM TO 5:30PM
$1,350,000
5 beds4 baths2,446 sq ft
20122 Evening Breeze, Walnut, CA 91789
$1,129,000
4 beds2.5 baths1,752 sq ft
19200 Kamlyn Ln, Walnut, CA 91789
OPEN SAT, 2:30PM TO 5:30PM
$1,150,000
4 beds2.5 baths2,046 sq ft
19320 EUREKA RIVER Pl, Walnut, CA 91789
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Rental estimate

Est. $4,211 per month, based on comparable rentals

Sale and tax history for 20899 Starshine

Sale History
Tax History

Year

Property tax

Land + Additions

Assessment*

2025

$5,816 (+5.7%)

$184,232 + $249,158

$433,390

2024

$5,501 (+2.4%)

$184,232 + $249,158

$433,390

2023

$5,373 (+2.2%)

$180,620 + $244,273

$424,893

2022

$5,260 (+2.0%)

$177,079 + $239,484

$416,563

2021

$5,156 (+1.3%)

$173,607 + $234,789

$408,396

2020

$5,091 (+1.9%)

$170,203 + $230,186

$400,389

2019

$4,995 (+4.9%)

$168,458 + $227,826

$396,284

2018

$4,761 (+4.7%)

$165,155 + $223,359

$388,514

2017

$4,547 (+3.2%)

$158,743 + $214,687

$373,430

2016

$4,405 (−0.5%)

$158,743 + $214,687

$373,430

2015

$4,429 (−0.1%)

$155,631 + $210,478

$366,109

2014

$4,434 (+1.2%)

$150,292 + $203,256

$353,548

2012

$4,380 (+3.0%)

$149,613 + $202,338

$351,951

2011

$4,253 (+0.8%)

$146,680 + $198,371

$345,051

2010

$4,218 (+0.4%)

$143,804 + $194,482

$338,286

2009

$4,200 (+2.9%)

$142,730 + $193,029

$335,759

2008

$4,082

$143,070 + $193,488

$336,558

Public record

Public record
Zoning

Beds

Baths

Stories

—

Lot width

—

Lot depth

—

Lot size

5,941 Sq. Ft.

Year renovated

1983

Sq. Ft.

1,970

Year built

1983

Style

Single Family Residential

County

Los Angeles County

APN

8765004017

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jul 9, 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: 2
# of Parking Spaces: 2

Interior

Laundry Information
Has Laundry
In Garage

Bathroom Information
# of Baths (Full): 3

Cooling Information
Central
Has Cooling

Room Information
Formal Entry, Entry, Living Room, Family Room, Den

Fireplace Information
Family Room
Has Fireplace

Heating Information
Central Furnace
Has Heating

Interior Features
Entry Level: 1
Entry Location: 1
Levels: Two
Main Level Bathrooms: 1
Main Level Bedrooms: 1

Exterior

Exterior Information
Structure Type: House

Exterior Features
Pool Features: None

Lot Information
Elevation Units: Feet
Lot Size Source: Assessor's Data
Lot Features: 0-1 Unit/Acre

Property Information
Total # of Units: 1
Common Walls: No Common Walls
Living Area Source: Appraiser
Parcel Number: 8765004017
Total # of Stories: 2
Has View
Year Built Source: Assessor
Property ADU: No

Financial

Assesments Information
Assessments: Unknown

Utilities

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

Location

Homeowners Association
Is Part of Association
Association Name: pathfinder community
Association Fee: $61
Association Fee Frequency: Monthly
Association Amenities: Playground, Picnic Area

Neighborhood Information
Community Features: Curbs

School Information
Elementary School: Evergreen
High School: Diamond Bar
High School District: Walnut Valley Unified
Elementary School 2: EVERGR
High School 2: DIABAR

Location Information
Latitude: 33.98684400
Longitude: -117.84870700
Directions: Pathfinder and Brea Canyon Rd

Public facts

Beds: 4
Baths: 3.0
Sq. Ft.: 1,970
Stories: —
Lot Size: 5,941 square feet
Style: Single Family Residential
Year Built: 1983
Year Renovated: 1983
County: Los Angeles County
APN: 8765004017

Home facts updated by county records on Jul 9, 2026

Other

Listing Information
IDX Contact Info: 626-222-3050
Days Active in MLS: 12
Continuous Days Active in MLS: 12

Listing Agent Information
List Agent First Name: Cathy
List Agent Last Name: Cheng

Listing Office Information
List Office Name: CC Royal Realty

Selling Agent Information
Buyer Agent First Name: Ning
Buyer Agent Last Name: Wang

Selling Office Information
Buyer Office Name: Real Broker

Around this home

Schools

Evergreen Elementary School

Public K-5 • Assigned • 1.0mi

9/10

Chaparral Middle School

Public 6-8 • Assigned • 1.8mi

10/10

Diamond Bar High School

Public 9-12 • Assigned • 0.7mi

10/10

Provided by GreatSchools

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

4/10 Fire Factor

3% chance of being in a wildfire in next 30 years

6/10 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 • 91789

Average low and high temperatures (°F)

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

75/ 100

Good sunlight

Sunscore

There appears to be minimal shading by surrounding buildings, terrain, and vegetation.

7.3 hrs

6.4 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$1.34M – $1.62M

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New listings for sale in 91789

OPEN SAT, 12PM TO 5PM

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1310 Heidelberg Ave, Walnut, CA 91789

COMING SOON

$1,760,000

4 beds3 baths2,646 sq ft

625 N Pacer Ct, Walnut, CA 91789

OPEN SUN, 1PM TO 5PM

$1,899,000

4 beds3 baths2,575 sq ft

20031 Wildbloom Cir, Walnut, CA 91789

NEW 28 HRS AGO

$1,768,800

4 beds3 baths2,477 sq ft

880 Gartel, Walnut, CA 91789

OPEN SAT, 11AM TO 3PM

$1,260,000

4 beds3 baths2,028 sq ft

1123 Bain Ave, Diamond Bar, CA 91789

OPEN SAT, 1PM TO 5PM

$1,480,000

4 beds3 baths2,479 sq ft

357 Windemere, Walnut, CA 91789

$950,000

5 beds4 baths1,918 sq ft

20316 Flintgate, Diamond Bar, CA 91789

OPEN SUN, 2:30PM TO 5:30PM

$1,350,000

5 beds4 baths2,446 sq ft

20122 Evening Breeze, Walnut, CA 91789

$1,129,000

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Home values near 20899 Starshine

Data from public records.

Address	Redfin Estimate
20858 Starshine Road, Diamond Bar, CA 4 Beds \| 3 Baths \| 1970 Sq. Ft.	$1,264,383
20990 Starshine Road, Diamond Bar, CA 3 Beds \| 3 Baths \| 1878 Sq. Ft.	$1,131,002

Address	Redfin Estimate
20862 Starshine Road, Diamond Bar, CA 5 Beds \| 3 Baths \| 2982 Sq. Ft.	$1,616,391
20994 Starshine Road, Diamond Bar, CA 3 Beds \| 3 Baths \| 2972 Sq. Ft.	$1,332,747

Address	Redfin Estimate
20986 Starshine Road, Diamond Bar, CA 4 Beds \| 2 Baths \| 2446 Sq. Ft.	$1,366,188
20998 Starshine Road, Diamond Bar, CA 4 Beds \| 2 Baths \| 2446 Sq. Ft.	$1,292,039

Property information provided by CRMLS when last listed in 2026. This data may not match . Learn more.

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GreatSchools Ratings provided by GreatSchools.org.

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