20851 STARSHINE Rd, Diamond Bar, CA 91789

Off Market Oct 2005 for $780K

$1,323,344

Est. refi paymentEst. refi $5,173/mo

•

— ba

•

2,400

sq ft

20851 STARSHINE Rd, Diamond Bar, CA 91789

About this home

Single-familyProperty Type

1983Year Built

8,190 sq ftLot Size

$551Est. Price/Sq.Ft.

3 car garageParking

Listed by Cathy Cheng •DRE #01270713 • ReMax 2000 Realty

Bought with Charley BOO • RE/MAX Galaxy

Redfin checked: 2 minutes ago

•Source:CRMLS #H511220

Redfin Estimate

$1,323,344

$543K since sold in October 2005$2,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 2.3% lower than the average sale price ($1.35M) of 6 comparable homes.

SOLD APR 1, 2026
$1,390,000
A
4 beds3 baths2,781 sq ft
20885 Starshine, Diamond Bar, CA 91789
SOLD JUL 28, 2026
$1,319,000
B
4 beds2.5 baths2,432 sq ft
1321 Glenthorpe, Diamond Bar, CA 91789
Real Broker
SOLD MAY 13, 2026
$1,250,000
C
4 beds3 baths2,150 sq ft
20899 Starshine, Diamond Bar, CA 91789
SOLD APR 17, 2026
$1,488,000
D
4 beds3 baths2,426 sq ft
20573 Missionary Ridge St, Walnut, CA 91789
SOLD MAY 27, 2026
$1,350,000
E
5 beds3 baths2,186 sq ft
21009 Quail Run, Diamond Bar, CA 91789
SOLD MAR 27, 2026
$1,330,000
F
5 beds3 baths2,186 sq ft
20939 Quail Run, Diamond Bar, CA 91789

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Earn from this home

Sell

$979,573

Est. take-home

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Refinance

Est. cash available

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Rent

$4,414/mo

Redfin rental estimate

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Market trends in 91789, CA

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

99.3%

0.3% MoM

Median sale price

$1.2M

$18K MoM

Avg. days on market

32d

7 days MoM

Recently sold homes

2 MoM

New listings for sale

$1,298,000
4 beds2.5 baths2,140 sq ft
1371 Point Loma, Walnut, CA 91789
$3,380,000
8 beds8 baths5,477 sq ft
19519 Mulberry Dr, Walnut, CA 91789
$1,125,000
4 beds3 baths1,756 sq ft
19564 Vista Hermosa Dr, Walnut, CA 91789
$1,250,000
5 beds3 baths2,304 sq ft
1313 Fairlance, Diamond Bar, CA 91789
$796,660
4 beds3 baths1,846 sq ft
1034 E Romney Dr, Diamond Bar, CA 91789
OPEN SEP 26, 11AM TO 2PM
$775,000
4 beds3 baths2,932 sq ft
949 Fontes, Walnut, CA 91789
$899,000
3 beds2 baths1,463 sq ft
712 Marylie Ln, Walnut, CA 91789
See all

Provided by Redfin

Sale history for 20851 STARSHINE Rd

Year

Property tax

Land + Additions

Assessment*

2025

$12,900 (+4.8%)

$717,725 + $304,636

$1,022,361

2024

$12,303 (+3.2%)

$717,725 + $304,636

$1,022,361

2023

$11,927 (+2.1%)

$703,652 + $298,663

$1,002,315

2022

$11,679 (+1.9%)

$689,855 + $292,807

$982,662

2021

$11,464 (+1.3%)

$676,329 + $287,066

$963,395

2020

$11,318 (+2.0%)

$663,068 + $281,438

$944,506

2019

$11,099 (+4.2%)

$656,270 + $278,553

$934,823

2018

$10,655 (+4.9%)

$643,402 + $273,092

$916,494

2017

$10,161 (+3.0%)

$618,419 + $262,489

$880,908

2016

$9,867 (−0.6%)

$618,419 + $262,489

$880,908

2015

$9,928

$606,294 + $257,343

$863,637

2014

$9,933 (+53.5%)

$585,489 + $248,513

$834,002

2012

$6,472 (−4.8%)

$480,400 + $192,500

$672,900

2011

$6,802

$376,100 + $147,720

$523,820

2010

$6,798 (+0.5%)

$376,100 + $182,400

$558,500

2009

$6,766 (−20.9%)

$376,100 + $182,400

$558,500

2008

$8,552

$376,100 + $182,400

$558,500

Tax history for 20851 STARSHINE Rd

Year

Property tax

Land + Additions

Assessment*

2025

$12,900 (+4.8%)

$717,725 + $304,636

$1,022,361

2024

$12,303 (+3.2%)

$717,725 + $304,636

$1,022,361

2023

$11,927 (+2.1%)

$703,652 + $298,663

$1,002,315

2022

$11,679 (+1.9%)

$689,855 + $292,807

$982,662

2021

$11,464 (+1.3%)

$676,329 + $287,066

$963,395

2020

$11,318 (+2.0%)

$663,068 + $281,438

$944,506

2019

$11,099 (+4.2%)

$656,270 + $278,553

$934,823

2018

$10,655 (+4.9%)

$643,402 + $273,092

$916,494

2017

$10,161 (+3.0%)

$618,419 + $262,489

$880,908

2016

$9,867 (−0.6%)

$618,419 + $262,489

$880,908

2015

$9,928

$606,294 + $257,343

$863,637

2014

$9,933 (+53.5%)

$585,489 + $248,513

$834,002

2012

$6,472 (−4.8%)

$480,400 + $192,500

$672,900

2011

$6,802

$376,100 + $147,720

$523,820

2010

$6,798 (+0.5%)

$376,100 + $182,400

$558,500

2009

$6,766 (−20.9%)

$376,100 + $182,400

$558,500

2008

$8,552

$376,100 + $182,400

$558,500

*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

8,723 Sq. Ft.

Year renovated

1983

Sq. Ft.

2,243

Year built

1983

Style

Single Family Residential

County

Los Angeles County

APN

8765004027

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Aug 31, 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

Interior

Kitchen Information
Formal Dining Room

Cooling Information
Central
Has Cooling

Room Information
Den, Family Room

Fireplace Information
See Remarks
Has Fireplace

Interior Features
Levels: Two

Exterior

Exterior Features
Pool Features: None

Lot Information
Lot Size Source: Assessor's Data

Property Information
Living Area Source: See Remarks
Parcel Number: 8765004027
Has View

Financial

Assesments Information
Assessments: Unknown

Location

Homeowners Association
Association Fee: $43

School Information
High School District: Walnut Valley Unified

Location Information
Latitude: 33.98579200
Longitude: -117.85013300

Public facts

Beds: 4
Baths: 3.0
Sq. Ft.: 2,243
Stories: —
Lot Size: 8,723 square feet
Style: Single Family Residential
Year Built: 1983
Year Renovated: 1983
County: Los Angeles County
APN: 8765004027

Home facts updated by county records on Aug 31, 2026

Other

Miscellaneous Information
Exclusions: TITLE SHOWS 2243SQFT BY BUILDER.

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

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

Listing Office Information
List Office Name: REMAX 2000 REALTY

Selling Agent Information
Buyer Agent First Name: Charley
Buyer Agent Last Name: BOO

Selling Office Information
Buyer Office Name: REMAX REALTY-100

Around this home

Schools

Evergreen Elementary School

Public K-5 • Assigned • 1.0mi

9/10

Chaparral Middle School

Public 6-8 • Assigned • 1.9mi

10/10

Diamond Bar High School

Public 9-12 • Assigned • 0.7mi

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

4/10 Fire Factor

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

5/10 Heat Factor

5 days above 99° expected this year, 15 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

7/10 Air Factor

13 unhealthy days expected this year, 14 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

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

$1.26M – $1.52M

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New listings for sale in 91789

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4 beds2.5 baths2,140 sq ft

1371 Point Loma, Walnut, CA 91789

$3,380,000

8 beds8 baths5,477 sq ft

19519 Mulberry Dr, Walnut, CA 91789

$1,125,000

4 beds3 baths1,756 sq ft

19564 Vista Hermosa Dr, Walnut, CA 91789

$1,250,000

5 beds3 baths2,304 sq ft

1313 Fairlance, Diamond Bar, CA 91789

$796,660

4 beds3 baths1,846 sq ft

1034 E Romney Dr, Diamond Bar, CA 91789

OPEN SEP 26, 11AM TO 2PM

$775,000

4 beds3 baths2,932 sq ft

949 Fontes, Walnut, CA 91789

$899,000

3 beds2 baths1,463 sq ft

712 Marylie Ln, Walnut, CA 91789

Home values near 20851 STARSHINE Rd

Data from public records.

Address	Redfin Estimate
20832 Starshine Road, Diamond Bar, CA 3 Beds \| 3 Baths \| 2243 Sq. Ft.	$1,420,644
20850 Starshine Road, Diamond Bar, CA 4 Beds \| 3 Baths \| 2100 Sq. Ft.	$1,294,357

Address	Redfin Estimate
20838 Starshine Road, Diamond Bar, CA 4 Beds \| 3 Baths \| 1970 Sq. Ft.	$1,127,164
20854 Starshine Road, Diamond Bar, CA 5 Beds \| - Baths \| 3000 Sq. Ft.	$1,434,743

Address	Redfin Estimate
20844 Starshine Road, Diamond Bar, CA 4 Beds \| - Baths \| 2243 Sq. Ft.	$1,330,562
20858 Starshine Road, Diamond Bar, CA 4 Beds \| 3 Baths \| 1970 Sq. Ft.	$1,246,067

Property information provided by CRMLS when last listed in 2005. 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 91789, CA

Sale history for 20851 STARSHINE Rd

Tax history for 20851 STARSHINE Rd

Public record

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 91789

Home values near 20851 STARSHINE Rd

More real estate resources