Google street view image for 71 Underrock Rd, Sparta, NJ 07871

Off market dec 1991 for $355K

$951,463

Est. refi paymentEst. refi $2,224/mo

—

•

— ba

•

3,822

sq ft

71 Underrock Rd, Sparta, NJ 07871

About this home

71 Underrock Rd is a 3,822 square foot house on a 1.02 acre lot. - it last sold on December 26, 1991 for $355,000. Based on Redfin's Sparta data, we estimate the home's value is $951,463.

Single-familyProperty Type

1991Year Built

1.02 acresLot Size

$249Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$951,463

$596K since sold in December 1991$14K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 8.9% higher than the average sale price ($874K) of 6 comparable homes.

SOLD OCT 2, 2026
$457,500
A
3 beds2 baths— sq ft
103 Arapaho Trl, Sparta, NJ 07871-3102
SOLD JUL 29, 2026
$900,000
B
4 beds3.6 baths— sq ft
1 Hunters Ln, Sparta, NJ 07871-2308
SOLD MAY 20, 2026
5 Pheasant Walk, Sparta, NJ 07871-3854
$975,000
C
4 beds3 baths— sq ft
5 Pheasant Walk, Sparta, NJ 07871-3854
SOLD JUL 10, 2026
30 Hidden Glen Dr, Sparta, NJ 07871-3800
$910,000
D
5 beds4.5 baths— sq ft
30 Hidden Glen Dr, Sparta, NJ 07871-3800
SOLD AUG 7, 2026
36 Waters Edge, Sparta, NJ 07871-3849
$850,000
E
4 beds2.5 baths— sq ft
36 Waters Edge, Sparta, NJ 07871-3849
SOLD MAY 26, 2026
6 Mackenzie Ct, Sparta, NJ 07871-3864
$1,150,000
F
4 beds3.5 baths— sq ft
6 Mackenzie Ct, Sparta, NJ 07871-3864

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Earn from this home

Sell

$894,764

Est. take-home

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Refinance

Est. cash available

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Market trends in 07871, NJ

Last updated September 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

103.1%

0.5% MoM

Median sale price

$650K

$3K MoM

Avg. days on market

24d

8 days MoM

Recently sold homes

9 MoM

New listings for sale

OPEN SUN, 12PM TO 3PM
$1,250,000
5 beds3.5 baths5,250 sq ft
42 Lambert Dr, Sparta, NJ 07871-1128
COMING SOON
$579,000
3 beds3.5 baths— sq ft
15 Village Ln, Sparta, NJ 07871-8606
OPEN SUN, 12PM TO 3PM
$850,000
4 beds3 baths— sq ft
34 Deire Dr, Sparta, NJ 07871-1134
COMING SOON
25 Bridle Way #25, Sparta, NJ 07871-1738
$499,000
2 beds2.5 baths— sq ft
25 Bridle Way #25, Sparta, NJ 07871-1738
$600,000
5 beds3 baths— sq ft
51 Whippoorwill Ln, Sparta, NJ 07871-1331
$719,000
4 beds3.5 baths3,316 sq ft
11 Mountain View Ter, Sparta, NJ 07871-2806
$890,000
4 beds2.5 baths— sq ft
8 Saddle Ridge Rd, Sparta, NJ 07871-3217
$550,000
4 beds2.5 baths— sq ft
73 Pinkneyville Rd, Sparta, NJ 07871-4006
EARLY ACCESS
$979,000
4 beds3 baths3,405 sq ft
36 Skyview Dr, Sparta, NJ 07871
$485,000
3 beds2 baths— sq ft
3 Ranger Trl, Sparta, NJ 07871-1220
See all

Provided by Redfin

Sale history for 71 Underrock Rd

Year

Property tax

Land + Additions

Assessment*

2025

$18,523 (+2.2%)

$155,200 + $349,800

$505,000

2024

$18,124 (+3.0%)

$155,200 + $349,800

$505,000

2023

$17,604 (+2.5%)

$155,200 + $349,800

$505,000

2022

$17,180 (+1.6%)

$155,200 + $349,800

$505,000

2021

$16,907 (−1.5%)

$155,200 + $349,800

$505,000

2020

$17,170 (+2.7%)

$155,200 + $349,800

$505,000

2019

$16,726 (+2.2%)

$155,200 + $349,800

$505,000

2018

$16,372 (+1.2%)

$155,200 + $349,800

$505,000

2017

$16,170 (+2.4%)

$155,200 + $349,800

$505,000

2016

$15,791 (−2.3%)

$155,200 + $349,800

$505,000

2014

$16,157 (+2.2%)

$125,200 + $297,100

$422,300

2013

$15,815 (+2.5%)

$125,200 + $297,100

$422,300

2012

$15,431 (+4.0%)

$125,200 + $297,100

$422,300

2011

$14,840 (−9.4%)

$125,200 + $297,100

$422,300

2010

$16,378 (+4.7%)

$125,200 + $297,100

$422,300

2009

$15,642

$150,400 + $350,300

$500,700

Tax history for 71 Underrock Rd

Year

Property tax

Land + Additions

Assessment*

2025

$18,523 (+2.2%)

$155,200 + $349,800

$505,000

2024

$18,124 (+3.0%)

$155,200 + $349,800

$505,000

2023

$17,604 (+2.5%)

$155,200 + $349,800

$505,000

2022

$17,180 (+1.6%)

$155,200 + $349,800

$505,000

2021

$16,907 (−1.5%)

$155,200 + $349,800

$505,000

2020

$17,170 (+2.7%)

$155,200 + $349,800

$505,000

2019

$16,726 (+2.2%)

$155,200 + $349,800

$505,000

2018

$16,372 (+1.2%)

$155,200 + $349,800

$505,000

2017

$16,170 (+2.4%)

$155,200 + $349,800

$505,000

2016

$15,791 (−2.3%)

$155,200 + $349,800

$505,000

2014

$16,157 (+2.2%)

$125,200 + $297,100

$422,300

2013

$15,815 (+2.5%)

$125,200 + $297,100

$422,300

2012

$15,431 (+4.0%)

$125,200 + $297,100

$422,300

2011

$14,840 (−9.4%)

$125,200 + $297,100

$422,300

2010

$16,378 (+4.7%)

$125,200 + $297,100

$422,300

2009

$15,642

$150,400 + $350,300

$500,700

*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: Colonial
Exterior Wall: Frame

Property Information
Subdivision Name: SUNSET LAKES
Living Sq. Ft: 3,822
# of Stories: 2

Lot Information
# of Buildings: 1
Land Sq. Ft: 44,431
Legal Lot Number: 79
Legal Block Number: 35006
Municipality Name: SPARTA TWP
Acres: 1.02
Zoning Code: RR
State Use Description: RESIDENTIAL

Financial

Assessor Information
Assessment Year: 2026
Tax District County: SPARTA TWP

Public facts

Beds: —
Baths: —
Sq. Ft.: 3,822
Stories: 2.0
Lot Size: 1.02 acres
Style: Single Family Residential
Year Built: 1991
Year Renovated: —
County: Sussex County
APN: 1835006 00079

Home facts updated by county records on Sep 8, 2026

Around this home

Schools

Mohawk Avenue Elementary School

Public 3 • Assigned • 1.8mi

6/10

Sparta Middle School

Public 6-8 • Assigned • 1.9mi

6/10

Sparta High School

Public 9-12 • Assigned • 2.0mi

7/10

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

3/10 Heat Factor

7 days above 94° expected this year, 15 days in 30 years

4/10 Wind Factor

18% chance of strong winds in next 30 years

2/10 Air Factor

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

Provided by First Street

Historical weather

Sparta, NJ • 07871

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 8.6 hours in June and 3.9 hours in December, placing it below the U.S. average for solar exposure.

8.6 hrs

3.9 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$904,000 – $1.10M

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Nearby similar homes

$399,000

2 beds1 bath900 sq ft

78 Woodlawn Rd, Sparta, NJ 07871-2026

OPEN SAT, 12PM TO 2PM

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4 beds3.5 baths— sq ft

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$649,900

4 beds1.5 baths1,914 sq ft

32 W Lakeview Trl, Wharton, NJ 07885-2946

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3 beds1.5 baths— sq ft

364 E Shore Trl, Sparta, NJ 07871-2010

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3 beds1 bath— sq ft

44 Signal Hill Trl, Sparta, NJ 07871-2532

$2,150,000

4 beds3.5 baths3,792 sq ft

56 Crestwood Trl, Sparta, NJ 07871-1633

New listings for sale in 07871-1128

OPEN SUN, 12PM TO 3PM

$1,250,000

5 beds3.5 baths5,250 sq ft

42 Lambert Dr, Sparta, NJ 07871-1128

COMING SOON

$579,000

3 beds3.5 baths— sq ft

15 Village Ln, Sparta, NJ 07871-8606

OPEN SUN, 12PM TO 3PM

$850,000

4 beds3 baths— sq ft

34 Deire Dr, Sparta, NJ 07871-1134

COMING SOON

$499,000

2 beds2.5 baths— sq ft

25 Bridle Way #25, Sparta, NJ 07871-1738

$600,000

5 beds3 baths— sq ft

51 Whippoorwill Ln, Sparta, NJ 07871-1331

$719,000

4 beds3.5 baths3,316 sq ft

11 Mountain View Ter, Sparta, NJ 07871-2806

$890,000

4 beds2.5 baths— sq ft

8 Saddle Ridge Rd, Sparta, NJ 07871-3217

$550,000

4 beds2.5 baths— sq ft

73 Pinkneyville Rd, Sparta, NJ 07871-4006

EARLY ACCESSCOLDWELL BANKER REALTY COMING SOON

$979,000

4 beds3 baths3,405 sq ft

36 Skyview Dr, Sparta, NJ 07871

Home values near 71 Underrock Rd

Data from public records.

Address	Redfin Estimate
55 Underrock Rd, Sparta, NJ 4 Beds \| 2.5 Baths \| - Sq. Ft.	$868,215
75 Underrock Rd, Sparta, NJ 4 Beds \| 2.5 Baths \| - Sq. Ft.	$920,428

Address	Redfin Estimate
59 Underrock Rd, Sparta, NJ - Beds \| - Baths \| 5162 Sq. Ft.	$938,366
79 Underrock Rd, Sparta, NJ - Beds \| - Baths \| 3672 Sq. Ft.	$875,737

Address	Redfin Estimate
67 Underrock Rd, Sparta, NJ - Beds \| - Baths \| 3395 Sq. Ft.	$912,154
87 Underrock Rd, Sparta, NJ 4 Beds \| 3 Baths \| - Sq. Ft.	$1,072,410

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About this home

Redfin Estimate

Earn from this home

Market trends in 07871, NJ

Sale history for 71 Underrock Rd

Tax history for 71 Underrock Rd

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 07871-1128

Home values near 71 Underrock Rd

More real estate resources