Est. $3,519 per month, based on comparable rentals
Sale and tax history for 20 William Penn Rd
Sale History
Tax History
Date
Event
Price
GSMLS #4017154
May 19, 2026
Sold
$1,300,000
Apr 12, 2026
Pending
—
Mar 27, 2026
Listed
$1,199,000
Year
Property tax
Land + Additions
Assessment*
2025
$16,919 (+3.2%)
$571,200 + $457,800
$1,029,000
2024
$16,399 (+1.4%)
$536,300 + $429,400
$965,700
2023
$16,169 (+1.1%)
$491,300 + $400,900
$892,200
2022
$15,999 (−0.9%)
$459,200 + $375,100
$834,300
2021
$16,151 (+1.0%)
$445,700 + $359,500
$805,200
2020
$15,997 (−3.4%)
$428,800 + $349,200
$778,000
2019
$16,553 (+2.9%)
$428,800 + $344,000
$772,800
2018
$16,081
$463,100 + $349,100
$812,200
2017
$16,067 (+0.3%)
$463,100 + $346,200
$809,300
2016
$16,015 (+3.2%)
$441,000 + $367,200
$808,200
2014
$15,511 (+1.6%)
$428,100 + $352,900
$781,000
2013
$15,267 (+4.7%)
$428,100 + $333,400
$761,500
2011
$14,585 (+2.6%)
$450,600 + $321,600
$772,200
2010
$14,211 (−0.2%)
$409,600 + $317,100
$726,700
2009
$14,237
$386,600 + $308,300
$694,900
Public record
Public record
Zoning
Beds
—
Baths
—
Stories
2
Lot width
—
Lot depth
—
Lot size
1.5 Acres
Year renovated
—
Sq. Ft.
3,363
Year built
1981
Style
Single Family Residential
County
Somerset County
APN
2000036 0100011
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Jul 6, 2026.
R-65
Rural Residential District
The R-65 district encompasses the majority of existing 1 1/2 acre lot single family neighborhoods of Warren Township. The standards and requirements of this district are designed to recognize the existing developed neighborhood character and to further the goals of the Warren Township Master Plan.
Permitted uses
Include but are not limited to:
Agriculture
Livestock production
Housing-Single unit
Golf related
Property details
Exterior
Lot Information
Approximate Lot Size: 1.5
Public facts
Beds: —
Baths: —
Sq. Ft.: 3,363
Stories: 2.0
Lot Size: 1.5 acres
Style: Single Family Residential
Year Built: 1981
Year Renovated: —
County: Somerset County
APN: 2000036 0100011
Home facts updated by county records on Jul 6, 2026
Other
Listing Information
Attribution Contact: 908-325-5000
Around this home
Schools
Mount Horeb Elementary School
Public PreK-5 • Assigned • 1.8mi
7/10
Middle School
Public 6-8 • Assigned • 2.7mi
8/10
Provided by GreatSchools
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
7 days above 100° 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
Warren, NJ • 07059-5047
Average low and high temperatures (°F)
35
20
39
23
56
34
63
42
70
51
80
61
88
69
82
60
77
57
68
45
56
36
40
25
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
83/ 100
Very good sunlight
Sunscore
There appears to be minimal shading by surrounding buildings, terrain, and vegetation.
10.1 hrs
3.8 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.26M – $1.53M
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