Google street view image for 548 Diamond Pl, Walnut, CA 91789

Off market

$1,137,191

•

3 ba

•

2,133

sq ft

548 Diamond Pl, Walnut, CA 91789

About this home

548 Diamond Pl is a 2,133 square foot house on a 9,154 square foot lot with 4 bedrooms and 3 bathrooms. Based on Redfin's Walnut data, we estimate the home's value is $1,137,191.

Single-familyProperty Type

1987Year Built

9,154 sq ftLot Size

$533Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$1,137,191

$13K since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 6.5% lower than the average sale price ($1.22M) of 6 comparable homes.

SOLD NOV 5, 2026
$1,025,000
A
4 beds3 baths1,880 sq ft
19061 Gold, Walnut, CA 91789
SOLD OCT 15, 2026
$1,500,000
B
4 beds3 baths2,084 sq ft
810 N San Miguel Rd, Walnut, CA 91789
SOLD JUN 25, 2026
$1,168,000
C
4 beds3 baths2,226 sq ft
19075 Shakespeare, Walnut, CA 91789
SOLD SEP 3, 2026
$1,328,000
D
4 beds3 baths2,082 sq ft
19356 Colina Dr, Walnut, CA 91789
SOLD OCT 20, 2026
$1,060,000
E
4 beds2.5 baths2,046 sq ft
19320 EUREKA RIVER Pl, Walnut, CA 91789
SOLD MAY 29, 2026
$1,220,000
F
4 beds3 baths1,785 sq ft
831 Colusa Dr, Walnut, CA 91789

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Earn from this home

Sell

$1,074,501

Est. take-home

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Rent

$4,094/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

98.3%

0.5% MoM

Median sale price

$1.2M

$21K MoM

Avg. days on market

40d

1 days MoM

Recently sold homes

2 MoM

New listings for sale

OPEN TODAY, 1:30PM TO 4PM
$1,430,000
4 beds4 baths2,571 sq ft
20926 Northview, Walnut, CA 91789
$1,200,000
4 beds2.5 baths2,144 sq ft
20132 Emerald Mdw, Walnut, CA 91789
OPEN SUN, 1AM TO 3AM
$1,198,000
4 beds2.5 baths2,140 sq ft
1371 Point Loma, Walnut, CA 91789
RE/MAX 2000 REALTY
$2,800,000
6 beds5 baths6,623 sq ft
20401 Blue Mountain Dr, Walnut, CA 91789
$1,490,000
5 beds3 baths2,984 sq ft
1264 S Lemon Ave, Walnut, CA 91789
OPEN SUN, 2:30PM TO 4:30PM
$739,000
3 beds2.5 baths1,697 sq ft
1135 Loxley Pl, Walnut, CA 91789
$1,388,888
4 beds3 baths2,668 sq ft
2630 Pointer, Walnut, CA 91789
OPEN TODAY, 1PM TO 4PM
$1,550,000
4 beds3 baths1,874 sq ft
322 La Tortola, Walnut, CA 91789
$1,268,000
6 beds3 baths3,000 sq ft
20548 Missionary Rdg, 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
See all

Provided by Redfin

Sale history for 548 Diamond Pl

As the MLS and public records start to fill up, we'll list the details here.

Year

Property tax

Land + Additions

Assessment*

2025

$6,994 (+4.1%)

$150,913 + $357,593

$508,506

2024

$6,719 (+3.3%)

$147,954 + $350,582

$498,536

2023

$6,504 (+2.1%)

$145,053 + $343,708

$488,761

2022

$6,370 (+1.7%)

$142,209 + $336,969

$479,178

2021

$6,265 (+1.2%)

$139,421 + $330,362

$469,783

2020

$6,189 (+1.7%)

$136,688 + $323,885

$460,573

2019

$6,087 (+4.6%)

$135,287 + $320,564

$455,851

2018

$5,821 (+1.9%)

$132,635 + $314,279

$446,914

2017

$5,713 (+1.9%)

$127,486 + $302,076

$429,562

2016

$5,606 (+1.6%)

$127,486 + $302,076

$429,562

2015

$5,520 (+0.1%)

$124,987 + $296,153

$421,140

2014

$5,512 (+5.2%)

$120,699 + $285,991

$406,690

2012

$5,240 (+2.9%)

$120,154 + $284,699

$404,853

2011

$5,094 (+2.1%)

$117,799 + $279,117

$396,916

2010

$4,988 (+0.9%)

$115,490 + $273,645

$389,135

2009

$4,945 (+2.1%)

$114,627 + $271,600

$386,227

2008

$4,842

$114,900 + $272,246

$387,146

Tax history for 548 Diamond Pl

Year

Property tax

Land + Additions

Assessment*

2025

$6,994 (+4.1%)

$150,913 + $357,593

$508,506

2024

$6,719 (+3.3%)

$147,954 + $350,582

$498,536

2023

$6,504 (+2.1%)

$145,053 + $343,708

$488,761

2022

$6,370 (+1.7%)

$142,209 + $336,969

$479,178

2021

$6,265 (+1.2%)

$139,421 + $330,362

$469,783

2020

$6,189 (+1.7%)

$136,688 + $323,885

$460,573

2019

$6,087 (+4.6%)

$135,287 + $320,564

$455,851

2018

$5,821 (+1.9%)

$132,635 + $314,279

$446,914

2017

$5,713 (+1.9%)

$127,486 + $302,076

$429,562

2016

$5,606 (+1.6%)

$127,486 + $302,076

$429,562

2015

$5,520 (+0.1%)

$124,987 + $296,153

$421,140

2014

$5,512 (+5.2%)

$120,699 + $285,991

$406,690

2012

$5,240 (+2.9%)

$120,154 + $284,699

$404,853

2011

$5,094 (+2.1%)

$117,799 + $279,117

$396,916

2010

$4,988 (+0.9%)

$115,490 + $273,645

$389,135

2009

$4,945 (+2.1%)

$114,627 + $271,600

$386,227

2008

$4,842

$114,900 + $272,246

$387,146

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

Property details

Interior

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

Exterior

Property Information
Subdivision Name: 39514
Living Sq. Ft: 2,133
# of Units: 1
Legal Description: TR=39514 LOT 4

Lot Information
# of Buildings: 1
Land Sq. Ft: 9,154
Legal Lot Number: 4
Municipality Name: WALNUT
Acres: 0.2101
Zoning Code: WARPD148002.5U
County Use Description: SINGLE FAMILY RESID

Financial

Assessor Information
Assessment Year: 2026

Public facts

Beds: 4
Baths: 3.0
Sq. Ft.: 2,133
Stories: —
Lot Size: 9,154 square feet
Style: Single Family Residential
Year Built: 1987
Year Renovated: 1987
County: Los Angeles County
APN: 8734050015

Home facts updated by county records on Oct 7, 2026

Around this home

Schools

K - 12
Preschool & daycare

Stanley G. Oswalt Academy

Public K-8 • Assigned • 0.5mi

8/10

Nogales High School

Public 9-12 • Assigned • 0.6mi

4/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

Walnut remains a competitive market, with strong demand for well-priced homes even as buyers have more inventory to choose from. If you’re considering a move in Walnut, I’d be happy to provide a personalized market analysis.
2 weeks ago • Walnut
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

1/10 Fire Factor

Unlikely to be 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)

70°

49°

72°

51°

75°

53°

73°

53°

77°

58°

82°

61°

87°

64°

90°

66°

86°

66°

80°

58°

73°

52°

71°

50°

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sun exposure

In this area, properties receive around 9.9 hours in June and 6.8 hours in December, placing it above the U.S. average for solar exposure.

9.9 hrs

6.8 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$1.08M – $1.31M

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New listings for sale in 91789

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OPEN SUN, 1AM TO 3AM

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Contemporary home • Open floor plan • Large center island

RE/MAX 2000 REALTY

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6 beds5 baths6,623 sq ft

20401 Blue Mountain Dr, Walnut, CA 91789

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5 beds3 baths2,984 sq ft

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0.26 acre lot • 3 garage spots • Built 1987

OPEN SUN, 2:30PM TO 4:30PM

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3 beds2.5 baths1,697 sq ft

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Tesla solar system • Tesla powerwalls • 133 sq. ft. lot

OPEN TODAY, 1PM TO 4PM

$1,550,000

4 beds3 baths1,874 sq ft

322 La Tortola, Walnut, CA 91789

Custom finishes • Electric fireplace • Chef's kitchen

$1,268,000

6 beds3 baths3,000 sq ft

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Front and back yard • Golf course view • City light view

Home values near 548 Diamond Pl

Data from public records.

Address	Redfin Estimate
508 Diamond Pl, Walnut, CA 3 Beds \| 3 Baths \| 1647 Sq. Ft.	$991,367
538 Diamond Pl, Walnut, CA 4 Beds \| 3 Baths \| 1880 Sq. Ft.	$1,124,375
578 Diamond Pl, Walnut, CA 3 Beds \| 3 Baths \| 1647 Sq. Ft.	$1,118,785
19202 Amalfi Ct, Walnut, CA 4 Beds \| 3 Baths \| 2376 Sq. Ft.	$1,192,733
19221 Robinwood Ln, Walnut, CA 3 Beds \| 2 Baths \| 1727 Sq. Ft.	$972,906
19200 Robinwood Ln, Walnut, CA 4 Beds \| 3 Baths \| 2271 Sq. Ft.	$1,233,875
19231 Shakespeare Dr, Walnut, CA 3 Beds \| 2.5 Baths \| 1647 Sq. Ft.	$1,078,976

Address	Redfin Estimate
518 Diamond Pl, Walnut, CA 4 Beds \| 3 Baths \| 2139 Sq. Ft.	$1,143,564
558 Diamond Pl, Walnut, CA 3 Beds \| 3 Baths \| 1647 Sq. Ft.	$1,075,851
19079 Garnet Way, Walnut, CA 4 Beds \| 3 Baths \| 2374 Sq. Ft.	$1,446,415
19222 Amalfi Ct, Walnut, CA 4 Beds \| 3 Baths \| 2271 Sq. Ft.	$1,145,684
19211 Robinwood Ln, Walnut, CA 3 Beds \| - Baths \| 1727 Sq. Ft.	$1,012,508
19210 Robinwood Ln, Walnut, CA 5 Beds \| 3 Baths \| 2748 Sq. Ft.	$1,345,123
19221 Shakespeare Dr, Walnut, CA 4 Beds \| 3 Baths \| 2133 Sq. Ft.	$1,172,858

Address	Redfin Estimate
528 Diamond Pl, Walnut, CA 3 Beds \| 3 Baths \| 1647 Sq. Ft.	$1,037,427
568 Diamond Pl, Walnut, CA 4 Beds \| 3 Baths \| 2475 Sq. Ft.	$1,206,759
19201 Amalfi Ct, Walnut, CA 4 Beds \| 3 Baths \| 2928 Sq. Ft.	$1,603,148
19242 Amalfi Ct, Walnut, CA 3 Beds \| 2 Baths \| 1727 Sq. Ft.	$1,025,487
19201 Robinwood Ln, Walnut, CA 3 Beds \| 2.5 Baths \| 1942 Sq. Ft.	$901,930
19220 Robinwood Ln, Walnut, CA 3 Beds \| 2 Baths \| 1727 Sq. Ft.	$1,003,892
19211 Shakespeare Dr, Walnut, CA 3 Beds \| 3 Baths \| 1647 Sq. Ft.	$1,014,842

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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 548 Diamond Pl

Tax history for 548 Diamond Pl

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 548 Diamond Pl

More real estate resources