As the MLS and public records start to fill up, we'll list the details here.
Year
Property tax
Land + Additions
Assessment*
2025
$10,058 (+2.2%)
$131,200 + $143,000
$274,200
2024
$9,841 (+3.0%)
$131,200 + $143,000
$274,200
2023
$9,559 (+2.5%)
$131,200 + $143,000
$274,200
2022
$9,328 (+1.6%)
$131,200 + $143,000
$274,200
2021
$9,180 (−1.5%)
$131,200 + $143,000
$274,200
2020
$9,323 (+2.7%)
$131,200 + $143,000
$274,200
2019
$9,082 (+2.2%)
$131,200 + $143,000
$274,200
2018
$8,890 (+1.2%)
$131,200 + $143,000
$274,200
2017
$8,780 (+2.4%)
$131,200 + $143,000
$274,200
2016
$8,574 (+0.9%)
$131,200 + $143,000
$274,200
2014
$8,501 (+2.2%)
$85,700 + $136,500
$222,200
2013
$8,321 (+2.5%)
$85,700 + $136,500
$222,200
2012
$8,119 (+4.0%)
$85,700 + $136,500
$222,200
2011
$7,808 (+7.4%)
$85,700 + $136,500
$222,200
2010
$7,268 (+4.7%)
$85,700 + $136,500
$222,200
2009
$6,942
$85,700 + $136,500
$222,200
Tax history for 257 W Mountain Rd
Year
Property tax
Land + Additions
Assessment*
2025
$10,058 (+2.2%)
$131,200 + $143,000
$274,200
2024
$9,841 (+3.0%)
$131,200 + $143,000
$274,200
2023
$9,559 (+2.5%)
$131,200 + $143,000
$274,200
2022
$9,328 (+1.6%)
$131,200 + $143,000
$274,200
2021
$9,180 (−1.5%)
$131,200 + $143,000
$274,200
2020
$9,323 (+2.7%)
$131,200 + $143,000
$274,200
2019
$9,082 (+2.2%)
$131,200 + $143,000
$274,200
2018
$8,890 (+1.2%)
$131,200 + $143,000
$274,200
2017
$8,780 (+2.4%)
$131,200 + $143,000
$274,200
2016
$8,574 (+0.9%)
$131,200 + $143,000
$274,200
2014
$8,501 (+2.2%)
$85,700 + $136,500
$222,200
2013
$8,321 (+2.5%)
$85,700 + $136,500
$222,200
2012
$8,119 (+4.0%)
$85,700 + $136,500
$222,200
2011
$7,808 (+7.4%)
$85,700 + $136,500
$222,200
2010
$7,268 (+4.7%)
$85,700 + $136,500
$222,200
2009
$6,942
$85,700 + $136,500
$222,200
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning
R-1
Residential Zone
This zone is designated for detached 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: Colonial
Exterior Wall: Frame
Property Information
Living Sq. Ft: 1,862
# of Stories: 2
Parking & Garage Information
# of Parking Spaces: 1
Parking Type: Undefined Type - 1 Car Garage
Garage / Carport Type: Undefined Type - 1 Car
Lot Information
# of Buildings: 1
Land Sq. Ft: 45,302
Legal Lot Number: 5
Legal Block Number: 25002
Municipality Name: SPARTA TWP
Acres: 1.04
Zoning Code: R-1
State Use Description: RESIDENTIAL
Financial
Assessor Information
Assessment Year: 2026
Tax District County: SPARTA TWP
Public facts
Beds: —
Baths: —
Sq. Ft.: 1,862
Stories: 2.0
Lot Size: 1.04 acres
Style: Single Family Residential
Year Built: 1970
Year Renovated: —
County: Sussex County
APN: 1825002 00005
Home facts updated by county records on Sep 8, 2026
Around this home
Schools
K - 12
Preschool & daycare
Mohawk Avenue Elementary School
Public 3 • Assigned • 2.5mi
6/10
Sparta Middle School
Public 6-8 • Assigned • 1.0mi
6/10
Sparta High School
Public 9-12 • Assigned • 1.0mi
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
3/10 Fire Factor
0.15% chance of being in a wildfire in next 30 years
4/10 Heat Factor
7 days above 97° 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
1 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
83
66
79
59
75
56
62
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
$514,000 – $622,000
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