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Off market jan 2024 for $930K

$1,098,952

Est. refi paymentEst. refi $2,906/mo

•

3 ba

•

1,755

sq ft

20831 Timberline Ln, Walnut, CA 91789

About this home

RARELY ON MARKET IN RONALD REGAN PARK AREA OF DIAMOND BAR. BUILT IN YEAR 1989. THE LARGEST 3 BEDROOM 2.5 BATHROOM MODEL IN THIS TRACT. CORNER LOT WITH SPACIOUS YARD. SPACIOUS FLOOR PLAN WITH CATHEDRAL CEILING IN LIVING ROOM. SEPARATE FORMAL DINING ROOM. OPEN AND BRIGHT FAMILY ROOM WITH FIREPLACE. MASTER BEDROOM HAS LARGE BALCONY. TWO CAR ATTACHED GARAGE. NEWLY INSTALLED CUSTOM WOOD FLOORING THROUGHOUT THIS PROPERTY. HIGHLY ACCLAIMED WALNUT SCHOOL DISTRICT. SHORT WALK TO DIAMOND BAR HIGH SCHOOL AND SOUTH POINT MIDDLE SCHOOL.

Single-familyProperty Type

1989Year Built

4,352 sq ftLot Size

$626Est. Price/Sq.Ft.

2 car garageParking

Listed by Andy Huang •DRE #01887240 • Presidential Incorporated

Bought with DAVID TANG •DRE #01084381 • S & D REALTY

Source:CRMLS #OC13185371

Redfin Estimate

$1,098,952

$169K since sold in January 2024$11K since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 4.6% 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 DEC 9, 2025
$1,116,000
B
3 beds2.5 baths1,755 sq ft
2707 S Rockridge Ln, Walnut, CA 91789
SOLD OCT 23, 2026
$1,075,000
C
4 beds3 baths2,178 sq ft
20951 High Country, Walnut, CA 91789
SOLD NOV 25, 2025
$1,308,000
D
3 beds2.5 baths1,755 sq ft
20834 E Boulder, Walnut, CA 91789
SOLD MAR 19, 2026
$1,060,000
E
3 beds2.5 baths1,546 sq ft
20700 Aspenwood, Walnut, CA 91789
Circa Properties, Inc.
SOLD MAY 13, 2026
$1,250,000
F
4 beds3 baths2,150 sq ft
20899 Starshine, Walnut, CA 91789

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Earn from this home

Sell

$332,332

Est. take-home

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Refinance

Est. cash available

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Rent

$3,930/mo

Redfin rental estimate

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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

$1,388,888
4 beds3 baths2,668 sq ft
2630 Pointer, Walnut, CA 91789
OPEN SAT, 12PM TO 4PM
$1,550,000
4 beds3 baths1,874 sq ft
322 La Tortola, Walnut, CA 91789
$1,288,000
6 beds3 baths3,000 sq ft
20548 Missionary Rdg, Walnut, CA 91789
$1,450,000
4 beds2 baths2,053 sq ft
20092 Wildcat Canyon Rd, Walnut, CA 91789
Century 21 Masters
$1,488,888
4 beds2 baths2,053 sq ft
20859 E Yellow Feather Cir, Walnut, CA 91789
$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
$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
See all

Provided by Redfin

Sale history for 20831 Timberline Ln

Date

Event

Price

Public Records

Jan 16, 2024

Sold

$930,000

$530/sq ft

CRMLS #AR23171061

Dec 14, 2023

Listing Removed

—

Oct 18, 2023

Price Changed

$960,000

$547/sq ft

Sep 20, 2023

Listed

$1,088,000

$620/sq ft

CRMLS #OC13185371

Oct 15, 2013

Sold

$638,000

$364/sq ft

Sep 20, 2013

Pending

—

Sep 12, 2013

Listed

$649,000

$370/sq ft

Public Records

Apr 23, 1991

Sold

$256,000

$146/sq ft

Public Records

Sep 1, 1988

Sold

$180,500

$103/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$12,462 (+16.2%)

$700,813 + $266,758

$967,571

2024

$10,727 (+2.5%)

$687,072 + $261,528

$948,600

2023

$10,466 (+2.2%)

$348,173 + $476,997

$825,170

2022

$10,243 (+1.9%)

$341,347 + $467,645

$808,992

2021

$10,050 (+4.4%)

$334,654 + $458,476

$793,130

2020

$9,624 (+1.9%)

$328,093 + $449,487

$777,580

2019

$9,442 (+3.7%)

$324,729 + $444,879

$769,608

2018

$9,108 (+4.7%)

$318,362 + $436,156

$754,518

2017

$8,698 (+2.9%)

$306,000 + $419,220

$725,220

2016

$8,456 (+6.3%)

$306,000 + $419,220

$725,220

2015

$7,954

$300,000 + $411,000

$711,000

2014

$7,959 (+61.6%)

$399,100 + $238,900

$638,000

2012

$4,925 (+2.8%)

$245,339 + $129,621

$374,960

2011

$4,790 (+0.8%)

$240,529 + $127,080

$367,609

2010

$4,754 (+0.4%)

$235,813 + $124,589

$360,402

2009

$4,736 (+2.7%)

$234,051 + $123,658

$357,709

2008

$4,612

$234,608 + $123,952

$358,560

Tax history for 20831 Timberline Ln

Year

Property tax

Land + Additions

Assessment*

2025

$12,462 (+16.2%)

$700,813 + $266,758

$967,571

2024

$10,727 (+2.5%)

$687,072 + $261,528

$948,600

2023

$10,466 (+2.2%)

$348,173 + $476,997

$825,170

2022

$10,243 (+1.9%)

$341,347 + $467,645

$808,992

2021

$10,050 (+4.4%)

$334,654 + $458,476

$793,130

2020

$9,624 (+1.9%)

$328,093 + $449,487

$777,580

2019

$9,442 (+3.7%)

$324,729 + $444,879

$769,608

2018

$9,108 (+4.7%)

$318,362 + $436,156

$754,518

2017

$8,698 (+2.9%)

$306,000 + $419,220

$725,220

2016

$8,456 (+6.3%)

$306,000 + $419,220

$725,220

2015

$7,954

$300,000 + $411,000

$711,000

2014

$7,959 (+61.6%)

$399,100 + $238,900

$638,000

2012

$4,925 (+2.8%)

$245,339 + $129,621

$374,960

2011

$4,790 (+0.8%)

$240,529 + $127,080

$367,609

2010

$4,754 (+0.4%)

$235,813 + $124,589

$360,402

2009

$4,736 (+2.7%)

$234,051 + $123,658

$357,709

2008

$4,612

$234,608 + $123,952

$358,560

*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: 1,755
# of Units: 1
Legal Description: TR=45268 LOT 86

Lot Information
# of Buildings: 1
Land Sq. Ft: 4,352
Legal Lot Number: 86
Municipality Name: DIAMOND BAR
Acres: 0.0999
Zoning Code: LCRPD100006U*
County Use Description: SINGLE FAMILY RESID

Location Information
Parcel Location Influence: Corner

Financial

Assessor Information
Assessment Year: 2026

Public facts

Beds: 3
Baths: 3.0
Sq. Ft.: 1,755
Stories: —
Lot Size: 4,352 square feet
Style: Single Family Residential
Year Built: 1989
Year Renovated: 1989
County: Los Angeles County
APN: 8765009091

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 • 0.8mi

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...
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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

5/10 Heat Factor

5 days above 99° expected this year, 16 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

$1.05M – $1.26M

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Home values near 20831 Timberline Ln

Data from public records.

Address	Redfin Estimate
20836 Timberline Lane, Walnut, CA 3 Beds \| 3 Baths \| 1546 Sq. Ft.	$991,884
20824 Timberline Lane, Walnut, CA 3 Beds \| 3 Baths \| 1755 Sq. Ft.	$1,073,988
20812 Timberline Lane, Walnut, CA 3 Beds \| 3 Baths \| 1546 Sq. Ft.	$966,271
20811 Timberline Lane, Walnut, CA 3 Beds \| 2.5 Baths \| 1755 Sq. Ft.	$1,098,062
20835 Timberline Lane, Walnut, CA 3 Beds \| 3 Baths \| 1546 Sq. Ft.	$959,537
20847 Timberline Lane, Walnut, CA 3 Beds \| 2.5 Baths \| 1546 Sq. Ft.	$1,011,273
2829 Eaglecrest Place, Walnut, CA 3 Beds \| 2 Baths \| 1306 Sq. Ft.	$974,158

Address	Redfin Estimate
20832 Timberline Lane, Walnut, CA 3 Beds \| 3 Baths \| 1755 Sq. Ft.	$1,021,877
20820 Timberline Lane, Walnut, CA 3 Beds \| 3 Baths \| 1546 Sq. Ft.	$952,556
20808 Timberline Lane, Walnut, CA 3 Beds \| 2 Baths \| 1306 Sq. Ft.	$902,310
20815 Timberline Lane, Walnut, CA 3 Beds \| 2 Baths \| 1306 Sq. Ft.	$936,952
20839 Timberline Lane, Walnut, CA 3 Beds \| 2.5 Baths \| 1814 Sq. Ft.	$933,857
2837 Eaglecrest Place, Walnut, CA 3 Beds \| - Baths \| 1755 Sq. Ft.	$1,054,009
2810 Woodview Court, Walnut, CA 3 Beds \| 3 Baths \| 1755 Sq. Ft.	$1,029,499

Address	Redfin Estimate
20828 Timberline Lane, Walnut, CA 3 Beds \| 2.5 Baths \| 1546 Sq. Ft.	$1,073,208
20816 Timberline Lane, Walnut, CA 3 Beds \| 3 Baths \| 1755 Sq. Ft.	$1,004,750
20807 Timberline Lane, Walnut, CA 3 Beds \| 3 Baths \| 1546 Sq. Ft.	$991,131
20819 Timberline Lane, Walnut, CA 3 Beds \| 3 Baths \| 1546 Sq. Ft.	$983,997
20843 Timberline Lane, Walnut, CA 3 Beds \| 2 Baths \| 1306 Sq. Ft.	$968,383
2833 Eaglecrest Place, Walnut, CA 3 Beds \| 3 Baths \| 1546 Sq. Ft.	$967,631
2814 Woodview Court, Walnut, CA 3 Beds \| 3 Baths \| 1546 Sq. Ft.	$1,026,763

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About this home

Redfin Estimate

Earn from this home

Market trends in 91789, CA

Sale history for 20831 Timberline Ln

Tax history for 20831 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 20831 Timberline Ln

More real estate resources