Google street view image for 309 Walnut St, Dunellen, NJ 08812

Off Market Sep 1994 for $149K

$570,991

Est. refi paymentEst. refi $1,164/mo

—

•

— ba

•

1,708

sq ft

309 Walnut St, Dunellen, NJ 08812

About this home

309 Walnut St is a 1,708 square foot house on a 5,397 square foot lot. - it last sold on September 07, 1994 for $149,995. Based on Redfin's Dunellen data, we estimate the home's value is $570,991.

Single-familyProperty Type

1976Year Built

5,397 sq ftLot Size

$334Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$570,991

$421K since sold in September 1994$7,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 6.6% higher than the average sale price ($536K) of 6 comparable homes.

SOLD JUL 27, 2026
$263,100
A
3 beds2 baths— sq ft
1894 4th St, Dunellen, NJ 08812
SOLD JUN 22, 2026
$705,000
B
4 beds3 baths1,936 sq ft
107 Madison Ave, Dunellen, NJ 08812
SOLD APR 8, 2026
$565,000
C
4 beds1.5 baths— sq ft
1621 Albert St, Piscataway, NJ 08854
SOLD AUG 7, 2026
$565,000
D
3 beds2 baths1,500 sq ft
729 Walnut St, Dunellen, NJ 08812
SOLD JUN 21, 2026
$560,000
E
3 beds2 baths1,569 sq ft
13 Buchman St, Piscataway, NJ 08854
SOLD MAY 29, 2026
$555,000
F
4 beds2 baths1,872 sq ft
241 Orange St, Dunellen, NJ 08812

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Earn from this home

Sell

$536,131

Est. take-home

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Refinance

Est. cash available

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Market trends in 08812, NJ

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

101.2%

0.5% MoM

Median sale price

$610K

$5K MoM

Avg. days on market

26d

5 days MoM

Recently sold homes

7 MoM

New listings for sale

$595,000
3 beds3 baths1,618 sq ft
82 Depot Way, Dunellen, NJ 08812
COMING SOON
$519,555
4 beds1.5 baths— sq ft
414 S Madison Ave, Dunellen, NJ 08812-1526
$549,000
3 beds1.5 baths1,216 sq ft
214 Madison Ave, Dunellen, NJ 08812
OPEN TODAY, 4PM TO 7:30PM
$579,000
3 beds2.5 baths2,010 sq ft
616 Center St, Dunellen, NJ 08812-1511
$750,000
4 beds2.5 baths2,080 sq ft
35 Rock Rd W, Green Brook, NJ 08812-2045
$1,250,000
4 beds4.5 baths— sq ft
1121 N Washington Ave, Green Brook, NJ 08812
$395,000
2 beds2 baths1,173 sq ft
1233 King Ct, Green Brook, NJ 08812-1731
$495,000
3 beds1 bath— sq ft
610 Front St, Dunellen, NJ 08812
See all

Provided by Redfin

Sale history for 309 Walnut St

Year

Property tax

Land + Additions

Assessment*

2025

$12,722 (+9.3%)

$96,900 + $432,700

$529,600

2024

$11,642 (+3.7%)

$96,900 + $422,800

$519,700

2023

$11,225 (+7.9%)

$96,900 + $367,300

$464,200

2022

$10,403 (+6.0%)

$96,900 + $317,600

$414,500

2021

$9,815 (+3.5%)

$96,900 + $279,900

$376,800

2020

$9,484 (+4.7%)

$96,900 + $218,900

$315,800

2019

$9,061 (+3.8%)

$92,600 + $199,400

$292,000

2018

$8,725 (+4.2%)

$92,600 + $199,400

$292,000

2017

$8,372 (+3.8%)

$19,400 + $45,200

$64,600

2016

$8,066 (+4.8%)

$19,400 + $45,200

$64,600

2014

$7,699 (+1.2%)

$19,400 + $45,200

$64,600

2013

$7,604 (+1.4%)

$19,400 + $45,200

$64,600

2011

$7,498 (+2.7%)

$19,400 + $45,200

$64,600

2010

$7,298 (+3.8%)

$19,400 + $45,200

$64,600

2009

$7,030

$19,400 + $45,200

$64,600

Tax history for 309 Walnut St

Year

Property tax

Land + Additions

Assessment*

2025

$12,722 (+9.3%)

$96,900 + $432,700

$529,600

2024

$11,642 (+3.7%)

$96,900 + $422,800

$519,700

2023

$11,225 (+7.9%)

$96,900 + $367,300

$464,200

2022

$10,403 (+6.0%)

$96,900 + $317,600

$414,500

2021

$9,815 (+3.5%)

$96,900 + $279,900

$376,800

2020

$9,484 (+4.7%)

$96,900 + $218,900

$315,800

2019

$9,061 (+3.8%)

$92,600 + $199,400

$292,000

2018

$8,725 (+4.2%)

$92,600 + $199,400

$292,000

2017

$8,372 (+3.8%)

$19,400 + $45,200

$64,600

2016

$8,066 (+4.8%)

$19,400 + $45,200

$64,600

2014

$7,699 (+1.2%)

$19,400 + $45,200

$64,600

2013

$7,604 (+1.4%)

$19,400 + $45,200

$64,600

2011

$7,498 (+2.7%)

$19,400 + $45,200

$64,600

2010

$7,298 (+3.8%)

$19,400 + $45,200

$64,600

2009

$7,030

$19,400 + $45,200

$64,600

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

Property details

Exterior

Exterior Information
Building Style Type: Bi-Level
Exterior Wall: Frame

Property Information
Living Sq. Ft: 1,708
# of Stories: 2

Lot Information
# of Buildings: 1
Land Sq. Ft: 5,397
Legal Lot Number: 1.02
Legal Block Number: 76
Municipality Name: DUNELLEN BORO
Acres: 0.1239
Depth Footage: 83
Front Footage: 65
Zoning Code: RA
State Use Description: RESIDENTIAL

Financial

Assessor Information
Assessment Year: 2026
Tax District County: DUNELLEN BORO

Public facts

Beds: —
Baths: —
Sq. Ft.: 1,708
Stories: 2.0
Lot Size: 5,397 square feet
Style: Single Family Residential
Year Built: 1976
Year Renovated: —
County: Middlesex County
APN: 0300076 00001 02

Home facts updated by county records on Jul 6, 2026

Around this home

Schools

John P. Faber Elementary School

Public PreK-5 • Assigned • 0.5mi

6/10

Lincoln Middle School

Public 6-8 • Assigned • 0.6mi

4/10

Dunellen High School

Public 9-12 • Assigned • 0.7mi

3/10

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

1/10 Fire Factor

Unlikely to be in a wildfire in next 30 years

7/10 Heat Factor

7 days above 101° expected this year, 15 days in 30 years

6/10 Wind Factor

27% chance of strong winds in next 30 years

3/10 Air Factor

2 unhealthy days expected this year, 3 days in 30 years

Provided by First Street

Historical weather

Dunellen, NJ • 08812

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 8.7 hours in June and 4.3 hours in December, placing it below the U.S. average for solar exposure.

8.7 hrs

4.3 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$543,000 – $657,000

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Nearby similar homes

$695,000

4 beds2 baths— sq ft

260 S Washington Ave, Dunellen, NJ 08812

$639,999

4 beds2.5 baths2,064 sq ft

1738 W 3rd St W, Piscataway, NJ 08854

NEW 20 HRS AGO

$599,000

4 beds2 baths1,799 sq ft

11 Demarest Pl, Piscataway, NJ 08854

$519,900

3 beds2 baths1,062 sq ft

3 Buchman St, Piscataway, NJ 08854

$549,000

3 beds1.5 baths1,216 sq ft

214 Madison Ave, Dunellen, NJ 08812

$625,000

3 beds2.5 baths— sq ft

1746 Elk St, Piscataway, NJ 08854

New listings for sale in 08812

$595,000

3 beds3 baths1,618 sq ft

82 Depot Way, Dunellen, NJ 08812

COMING SOON

$519,555

4 beds1.5 baths— sq ft

414 S Madison Ave, Dunellen, NJ 08812-1526

$549,000

3 beds1.5 baths1,216 sq ft

214 Madison Ave, Dunellen, NJ 08812

OPEN TODAY, 4PM TO 7:30PM

$579,000

3 beds2.5 baths2,010 sq ft

616 Center St, Dunellen, NJ 08812-1511

$750,000

4 beds2.5 baths2,080 sq ft

35 Rock Rd W, Green Brook, NJ 08812-2045

$1,250,000

4 beds4.5 baths— sq ft

1121 N Washington Ave, Green Brook, NJ 08812

$395,000

2 beds2 baths1,173 sq ft

1233 King Ct, Green Brook, NJ 08812-1731

$495,000

3 beds1 bath— sq ft

610 Front St, Dunellen, NJ 08812

Home values near 309 Walnut St

Data from public records.

Address	Redfin Estimate
308 Walnut Street, Dunellen, NJ - Beds \| - Baths \| 2048 Sq. Ft.	$590,456
318 Walnut Street, Dunellen, NJ 3 Beds \| 1.5 Baths \| - Sq. Ft.	$502,315

Address	Redfin Estimate
302 Walnut Street, Dunellen, NJ 5 Beds \| 2 Baths \| - Sq. Ft.	$584,058
314 Walnut Street, Dunellen, NJ 3 Beds \| 2 Baths \| 2053 Sq. Ft.	$577,268

Address	Redfin Estimate
322 Walnut Street, Dunellen, NJ - Beds \| - Baths \| 1454 Sq. Ft.	$547,655
331 Walnut Street, Dunellen, NJ - Beds \| - Baths \| 1303 Sq. Ft.	$531,983

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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 08812, NJ

Sale history for 309 Walnut St

Tax history for 309 Walnut St

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 08812

Home values near 309 Walnut St

More real estate resources