Off market dec 2009 for $440K

$976,279

Est. refi paymentEst. refi $2,921/mo

•

3 ba

•

1,546

sq ft

20807 Timberline Ln, Walnut, CA 91789

About this home

Single-familyProperty Type

1989Year Built

4,185 sq ftLot Size

$631Est. Price/Sq.Ft.

2 car garageParking

Listed by Kenny KIM •DRE #01228233 • ReMax Realty-100

Bought with Ae Sook GOMEZ •DRE #01304897 • New Star Realty & Inv.

Source:CRMLS #H412593

Redfin Estimate

$976,279

$536K since sold in December 2009$15K since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 15.2% lower than the average sale price ($1.15M) of 6 comparable homes.

SOLD JUL 28, 2026
$1,100,000
A
3 beds3 baths1,578 sq ft
20814 E Boulder, Walnut, CA 91789
SOLD OCT 23, 2026
$1,075,000
B
4 beds3 baths2,178 sq ft
20951 High Country, Walnut, CA 91789
SOLD MAR 19, 2026
$1,060,000
C
3 beds2.5 baths1,546 sq ft
20700 Aspenwood, Walnut, CA 91789
Circa Properties, Inc.
SOLD DEC 9, 2025
$1,116,000
D
3 beds2.5 baths1,755 sq ft
2707 S Rockridge Ln, Walnut, CA 91789
SOLD MAY 13, 2026
$1,250,000
E
4 beds3 baths2,150 sq ft
20899 Starshine, Walnut, CA 91789
SOLD NOV 25, 2025
$1,308,000
F
3 beds2.5 baths1,755 sq ft
20834 E Boulder, Walnut, CA 91789

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Earn from this home

Sell

$717,302

Est. take-home

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Refinance

Est. cash available

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Rent

$3,749/mo

Redfin rental estimate

List your home for rent

Market trends in 91789, CA

Last updated October 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

98.8%

0.5% MoM

Median sale price

$1.3M

$21K MoM

Avg. days on market

41d

9 days MoM

Recently sold homes

3 MoM

New listings for sale

OPEN TODAY, 12PM TO 4PM
$998,888
4 beds3 baths2,668 sq ft
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OPEN TODAY, 12PM TO 4PM
$1,550,000
4 beds3 baths1,874 sq ft
322 La Tortola, Walnut, CA 91789
OPEN TODAY, 1PM TO 4PM
$1,450,000
4 beds2 baths2,053 sq ft
20092 Wildcat Canyon Rd, Walnut, CA 91789
Century 21 Masters
OPEN TODAY, 2PM TO 4PM
$1,488,888
4 beds2 baths2,053 sq ft
20859 E Yellow Feather Cir, Walnut, CA 91789
OPEN TODAY, 1PM TO 4PM
$1,588,000
4 beds3.5 baths2,473 sq ft
19935 Camino De Rosa, Walnut, CA 91789
$1,758,000
4 beds3 baths2,548 sq ft
838 Streamview, Walnut, CA 91789
$1,899,990
4 beds4 baths2,330 sq ft
22138 Portofino Dr, Walnut, CA 91789
OPEN TODAY, 1PM TO 4PM
$777,000
3 beds2.5 baths1,846 sq ft
1034 E Romney Dr, Walnut, CA 91789
$1,200,000
4 beds3 baths2,763 sq ft
950 Coronel Ct, Walnut, CA 91789
OPEN TODAY, 1PM TO 4PM
$310,000
3 beds2 baths1,740 sq ft
20739 LYCOMING St #44, Walnut, CA 91789
See all

Provided by Redfin

Sale history for 20807 Timberline Ln

Date

Event

Price

CRMLS #WS24188976

Oct 16, 2024

Rental Removed

$3,600

$2/sq ft

Oct 2, 2024

Price Changed

$3,600

$2/sq ft

Sep 12, 2024

Listed for Rent

$3,800

$2/sq ft

APPFOLIO #1

Oct 21, 2024

Rental Removed

$3,600

$2/sq ft

Oct 2, 2024

Price Changed

$3,600

$2/sq ft

Sep 10, 2024

Listed for Rent

$3,800

$2/sq ft

Public Records

Dec 10, 2009

Sold

$440,000

$285/sq ft

CRMLS #H412593

Nov 24, 2004

Sold

$493,500

$319/sq ft

Sep 15, 2004

Listed

$499,000

$323/sq ft

CRMLS #H410627

Oct 31, 2004

Listing Removed

—

Aug 10, 2004

Listed

$510,000

$330/sq ft

CRMLS #H410626

Aug 10, 2004

Listed

$519,900

$336/sq ft

Aug 10, 2004

Listing Removed

—

CRMLS #H407780

Aug 10, 2004

Listing Removed

—

Jun 23, 2004

Listed

$519,900

$336/sq ft

CRMLS #H407779

Aug 10, 2004

Listing Removed

—

Jun 23, 2004

Listed

$519,900

$336/sq ft

CRMLS #H405468

Jun 23, 2004

Listing Removed

—

May 15, 2004

Listed

$529,900

$343/sq ft

CRMLS #H405472

Jun 23, 2004

Listing Removed

—

May 15, 2004

Listed

$529,900

$343/sq ft

Public Records

Nov 8, 2001

Sold

$291,000

$188/sq ft

Public Records

Sep 7, 1988

Sold

$155,000

$100/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$7,976 (+4.8%)

$443,963 + $135,340

$579,303

2024

$7,613 (+2.5%)

$435,258 + $132,687

$567,945

2023

$7,430 (+2.2%)

$426,724 + $130,086

$556,810

2022

$7,270 (+2.0%)

$418,357 + $127,536

$545,893

2021

$7,129 (+5.8%)

$410,154 + $125,036

$535,190

2020

$6,741 (+1.9%)

$402,112 + $122,585

$524,697

2019

$6,616 (+3.9%)

$397,989 + $121,329

$519,318

2018

$6,368 (+4.6%)

$390,186 + $118,950

$509,136

2017

$6,089 (+2.9%)

$375,036 + $114,332

$489,368

2016

$5,918 (−0.6%)

$375,036 + $114,332

$489,368

2015

$5,952 (−0.1%)

$367,683 + $112,091

$479,774

2014

$5,958 (+1.1%)

$355,067 + $108,246

$463,313

2012

$5,894 (+2.8%)

$353,463 + $107,757

$461,220

2011

$5,732 (+0.7%)

$346,533 + $105,645

$452,178

2010

$5,690 (+5.0%)

$339,739 + $103,574

$443,313

2009

$5,420 (−17.5%)

$337,200 + $102,800

$440,000

2008

$6,567

$335,200 + $83,800

$419,000

Tax history for 20807 Timberline Ln

Year

Property tax

Land + Additions

Assessment*

2025

$7,976 (+4.8%)

$443,963 + $135,340

$579,303

2024

$7,613 (+2.5%)

$435,258 + $132,687

$567,945

2023

$7,430 (+2.2%)

$426,724 + $130,086

$556,810

2022

$7,270 (+2.0%)

$418,357 + $127,536

$545,893

2021

$7,129 (+5.8%)

$410,154 + $125,036

$535,190

2020

$6,741 (+1.9%)

$402,112 + $122,585

$524,697

2019

$6,616 (+3.9%)

$397,989 + $121,329

$519,318

2018

$6,368 (+4.6%)

$390,186 + $118,950

$509,136

2017

$6,089 (+2.9%)

$375,036 + $114,332

$489,368

2016

$5,918 (−0.6%)

$375,036 + $114,332

$489,368

2015

$5,952 (−0.1%)

$367,683 + $112,091

$479,774

2014

$5,958 (+1.1%)

$355,067 + $108,246

$463,313

2012

$5,894 (+2.8%)

$353,463 + $107,757

$461,220

2011

$5,732 (+0.7%)

$346,533 + $105,645

$452,178

2010

$5,690 (+5.0%)

$339,739 + $103,574

$443,313

2009

$5,420 (−17.5%)

$337,200 + $102,800

$440,000

2008

$6,567

$335,200 + $83,800

$419,000

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Zoning

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

Interior

Heating & Cooling
Air Conditioning Type: Central
Heating Type: Central

Exterior

Property Information
Subdivision Name: 45268
Living Sq. Ft: 1,546
# of Units: 1
Legal Description: TR=45268 LOT 76

Lot Information
# of Buildings: 1
Land Sq. Ft: 4,185
Legal Lot Number: 76
Municipality Name: DIAMOND BAR
Acres: 0.0961
Zoning Code: LCRPD100006U*
County Use Description: SINGLE FAMILY RESID

Financial

Assessor Information
Assessment Year: 2026

Public facts

Beds: 3
Baths: 3.0
Sq. Ft.: 1,546
Stories: —
Lot Size: 4,185 square feet
Style: Single Family Residential
Year Built: 1989
Year Renovated: 1989
County: Los Angeles County
APN: 8765009081

Home facts updated by county records on Oct 7, 2026

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 • 1.1mi

10/10

Diamond Bar High School

Public 9-12 • Assigned • 0.9mi

10/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

The Diamond Bar market is shifting, creating new opportunities for both buyers and sellers. Buyers have a bit more negotiating room, while well-priced, well-maintained homes can still attract strong interest. If you’re considering a move, I’d be...
1 week ago • Diamond Bar
Sang Ur
Redfin Premier agent
124 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

5% chance of being in a wildfire in next 30 years

6/10 Heat Factor

6 days above 99° expected this year, 17 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

Walnut, 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

$928,000 – $1.12M

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Home values near 20807 Timberline Ln

Data from public records.

Address	Redfin Estimate
20828 Timberline Ln, Walnut, CA 3 Beds \| 2.5 Baths \| 1546 Sq. Ft.	$1,086,114
20816 Timberline Ln, Walnut, CA 3 Beds \| 3 Baths \| 1755 Sq. Ft.	$994,868
20804 Timberline Ln, Walnut, CA 3 Beds \| 3 Baths \| 1755 Sq. Ft.	$971,018
20778 Timberline Ln, Walnut, CA 3 Beds \| - Baths \| 1546 Sq. Ft.	$991,653
20771 Timberline Ln, Walnut, CA 3 Beds \| 3 Baths \| 1755 Sq. Ft.	$983,518
20811 Timberline Ln, Walnut, CA 3 Beds \| 2.5 Baths \| 1755 Sq. Ft.	$1,117,954
20831 Timberline Ln, Walnut, CA 3 Beds \| 3 Baths \| 1755 Sq. Ft.	$1,106,451

Address	Redfin Estimate
20824 Timberline Ln, Walnut, CA 3 Beds \| 3 Baths \| 1755 Sq. Ft.	$1,073,258
20812 Timberline Ln, Walnut, CA 3 Beds \| 3 Baths \| 1546 Sq. Ft.	$952,015
20800 Timberline Ln, Walnut, CA 3 Beds \| 3 Baths \| 1546 Sq. Ft.	$973,658
20774 Timberline, Walnut, CA 3 Beds \| 3 Baths \| 1755 Sq. Ft.	$1,209,939
20775 Timberline Ln, Walnut, CA 3 Beds \| 2 Baths \| 1306 Sq. Ft.	$958,247
20815 Timberline Ln, Walnut, CA 3 Beds \| 2 Baths \| 1306 Sq. Ft.	$915,297
2811 Woodview Ct, Walnut, CA 3 Beds \| 2 Baths \| 1306 Sq. Ft.	$879,923

Address	Redfin Estimate
20820 Timberline Ln, Walnut, CA 3 Beds \| 3 Baths \| 1546 Sq. Ft.	$917,722
20808 Timberline Ln, Walnut, CA 3 Beds \| 2 Baths \| 1306 Sq. Ft.	$906,167
20782 Timberline Ln, Walnut, CA 3 Beds \| - Baths \| 1306 Sq. Ft.	$956,200
20767 Timberline Ln, Walnut, CA 3 Beds \| 3 Baths \| 1676 Sq. Ft.	$953,358
20803 Timberline Ln, Walnut, CA 3 Beds \| 2.5 Baths \| 1755 Sq. Ft.	$1,111,216
20819 Timberline Ln, Walnut, CA 3 Beds \| 3 Baths \| 1546 Sq. Ft.	$963,785
2807 Woodview Ct, Walnut, CA 3 Beds \| 3 Baths \| 1546 Sq. Ft.	$978,336

Property information provided by CRMLS when last listed in 2024. This data may not match . Learn more.

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About this home

Redfin Estimate

Earn from this home

Market trends in 91789, CA

Sale history for 20807 Timberline Ln

Tax history for 20807 Timberline Ln

Zoning

Property details

Around this home

Schools

Lifestyle

Local insights from Redfin agents

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 91789

Home values near 20807 Timberline Ln

More real estate resources