28 Underrock Rd is a 1,200 square foot house on a 0.46 acre lot. - it last sold on October 01, 1978 for $57,000. Based on Redfin's Sparta data, we estimate the home's value is $477,395.
Single-familyProperty Type
1962Year Built
0.46 acresLot Size
$398Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$477,395
$420K since sold in October 1978$5,000 since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 10.6% lower than the average sale price ($534K) of 6 comparable homes.
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning
R-2
Residential Zone
This zone is designed for single family residential use. Other uses are also permitted where the criteria below and other applicable sections of this Code are also satisfied.
Permitted uses
Include but are not limited to:
Agriculture
Housing-Single unit
Property details
Exterior
Exterior Information
Building Style Type: Ranch
Exterior Wall: Frame
Property Information
Living Sq. Ft: 1,200
# of Stories: 1
Parking & Garage Information
# of Parking Spaces: 2
Lot Information
# of Buildings: 1
Land Sq. Ft: 19,950
Legal Lot Number: 8
Legal Block Number: 35005
Municipality Name: SPARTA TWP
Acres: 0.458
Depth Footage: 175
Front Footage: 114
Zoning Code: R-2
State Use Description: RESIDENTIAL
Financial
Assessor Information
Assessment Year: 2026
Tax District County: SPARTA TWP
Public facts
Beds: —
Baths: —
Sq. Ft.: 1,200
Stories: 1.0
Lot Size: 0.46 acres
Style: Single Family Residential
Year Built: 1962
Year Renovated: —
County: Sussex County
APN: 1835005 00008
Home facts updated by county records on Aug 26, 2026
Around this home
Schools
Mohawk Avenue Elementary School
Public 3 • Assigned • 1.6mi
6/10
Sparta Middle School
Public 6-8 • Assigned • 1.6mi
6/10
Sparta High School
Public 9-12 • Assigned • 1.6mi
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
3/10 Fire Factor
0.15% chance of being 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
19% 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)
30
18
35
21
53
33
61
41
68
50
79
61
84
67
79
60
74
55
64
44
50
36
35
23
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
$454,000 – $550,000
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