NOT LISTED FOR SALE

23 Slope Dr Hackettstown, NJ 07840

Estimated Value: $434,000 - $459,000

3 Beds
2 Baths
-- Sq Ft
0.46 Acres Lot

Sale Details

Date Sold: October 15, 2025

Last sale price $450,000

Est. 1% decrease in value since last sale

Current estimated payment $2,928 / mo

14 Days on Market

About This Home

As of October 2025

This home is located at 23 Slope Dr, Hackettstown, NJ 07840 since 20 August 2025 and is currently estimated at $444,851. This property was built in 1966. 23 Slope Dr is a home located in Warren County with nearby schools including Mansfield Twp Elementary School, Warren Hills Regional Middle School, and Warren Hills Reg High School.

Last Agent to Sell the Property

Christopher Kruk

RE/MAX TOWN & VALLEY II Brokerage Phone: 973-598-1008 Listed on: 08/20/2025

RE/MAX TOWN & VALLEY II

Last Buyer's Agent

Susan J. Wintermute

RE/MAX HOUSE VALUES

RE/MAX HOUSE VALUES

Home Details

Home Type

  • Single Family

Year Built

  • Built in 1966

Lot Details

  • 20,038 Sq Ft Lot

Bedrooms and Bathrooms

  • 3 Bedrooms
  • 2 Bathrooms

Additional Features

  • Basement

Home Details

Home Type

Single Family

Year Built

Built in 1966

Lot Details

0.46 Acres

Listing Details

  • Year Built: 1966
  • County Name: Warren
  • I D: 5379590
  • Attribution Contact: 973-598-1008
  • MLS Status: Sold
  • Special Features: None
  • Property Sub Type: Detached

Interior Features

  • Bedrooms: 3
  • Bathrooms: 1.10

Lot Info

  • Total Acres: 0.46

Ownership History

Date Name Owned For Owner Type

Purchase Details

Listed on
Aug 20, 2025
Closed on
Oct 14, 2025
Sold by
Mary L Heitmann Irrevocable Trust and Heitmann Michael
Bought by
Mann Derek and Mann Kelsey
Seller's Agent
Christopher Kruk
RE/MAX TOWN & VALLEY II
Buyer's Agent
Susan J. Wintermute
RE/MAX HOUSE VALUES
List Price
$425,000
Sold Price
$450,000
Premium/Discount to List
$25,000
5.88%
Views
95
Current Estimated Value
$444,851

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Estimated Appreciation
-$5,149
Avg. Annual Appreciation
-2.03%
Original Mortgage
$405,000
Interest Rate
6.27%
Mortgage Type
New Conventional

Purchase Details

Listed on
Aug 20, 2025
Closed on
Oct 8, 2025
Sold by
Heitmann Mary L and Heitmann Mary
Bought by
Mary L Heitmann Irrevocable Trust and Heitmann
Seller's Agent
Christopher Kruk
RE/MAX TOWN & VALLEY II
Buyer's Agent
Susan J. Wintermute
RE/MAX HOUSE VALUES
List Price
$425,000
Sold Price
$450,000
Premium/Discount to List
$25,000
5.88%
Views
95

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$405,000
Interest Rate
6.27%
Mortgage Type
New Conventional

Purchase Details

Closed on
Aug 30, 2013
Sold by
Heitmann Mary L
Bought by
The Mary L Heitmann Irrevocable Trust
Source: Public Records

Range of Values:

--
Value Increase
--
Percent Increase
--
Adjusted for Inflation
Collateral Analytics

Collateral Analytics Collateral Analytics AVMs (Automated Valuation Model) employ a number of statistical approaches combined with neighborhood-specific comparable selection guarantees the most up-to-date and precise valuations.

Not Available

Collateral Analytics does not have data for the current month. Please view the chart for historical values.

ICE

ICE Mortgage Technology ICE Mortgage Technology’s AVM (Automated Valuation Model) is a state-of-the-art online residential property valuation tool that provides a quick and accurate estimate of the value of almost any home in the U.S.

Not Available

ICE Mortgage Technology does not have data for the current month. Please view the chart for historical values.

First American

First American First American Data & Analytics’ next-generation AVM combines unrivaled data assets with a blended ensemble of valuation models to produce highly accurate, reliable valuations you can trust.

Not Available

First American does not have data for the current month. Please view the chart for historical values.

Quantarium

Quantarium Quantarium’s valuation service, repeatedly proven the industry’s most accurate and comprehensive, is supercharged with a self-learning and auto-tuning AI engine that continually becomes smarter and more accurate as it processes daily inputs from the industry’s leading RE data lake.

Not Available

Quantarium does not have data for the current month. Please view the chart for historical values.

Average Value
Not Available
List Price
Sold Price
Create a Home Valuation Report for This Property
The Home Valuation Report is an in-depth analysis detailing your home's value as well as a comparison with similar homes in the area

Home Values in the Area

Source: Public Records

Average Home Value in this Area

Source: Public Records

Purchase History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Buyer Sale Price Title Company
Mann Derek $450,000 Westcor Land Title
Mary L Heitmann Irrevocable Trust -- Westcor Land Title
The Mary L Heitmann Irrevocable Trust -- None Available
Source: Public Records

Mortgage History

We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.

Date Status Borrower Loan Amount
Previous Owner Mann Derek $405,000
Source: Public Records

Property History

Date Event Price List to Sale Price per Sq Ft
10/15/2025 10/15/25 Sold $450,000 +5.9% --
09/03/2025 09/03/25 Pending -- -- --
08/20/2025 08/20/25 For Sale $425,000 -- --
Source: Garden State MLS

Tax History

Year Tax Paid Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. Land Improvement
2025 $6,236 $176,300 $78,400 $97,900
2024 $6,262 $176,300 $78,400 $97,900
2023 $6,151 $176,300 $78,400 $97,900
2022 $4,409 $176,300 $78,400 $97,900
2021 $5,044 $176,300 $78,400 $97,900
2020 $6,132 $176,300 $78,400 $97,900
2019 $5,933 $176,300 $78,400 $97,900
2018 $5,514 $176,300 $78,400 $97,900
2017 $5,807 $176,300 $78,400 $97,900
2016 $5,675 $176,300 $78,400 $97,900
2015 $5,555 $176,300 $78,400 $97,900
2014 $5,379 $176,300 $78,400 $97,900
Source: Public Records

Agents Affiliated with this Home

  • Christopher Kruk

    Seller's Agent in 2025

    Christopher Kruk

    RE/MAX

    (973) 573-7000

    10 in this area

    192 Total Sales

    Christopher Kruk
    Section Image
  • Susan J. Wintermute

    Buyer's Agent in 2025

    Susan J. Wintermute

    RE/MAX

    (973) 713-7165

    1 in this area

    57 Total Sales

    Susan J. Wintermute
    Section Image
See All Agents

Map

Source: Garden State MLS

MLS Number: 3982240

Garden State MLS

APN: 16-02106-0000-00003

New Jersey Warren County Hackettstown 07840

23 Slope Dr, Hackettstown, NJ

Disclaimer: Certain information contained herein is derived from information provided by parties other than Homes.com. All information provided is deemed reliable, but is not guaranteed to be accurate and should be independently verified.

Garden State MLS The data relating to real estate for sale on this website comes in part from the IDX Program of Garden State Multiple Listing Service, L.L.C. Real estate listings held by other brokerage firms are marked as IDX Listing.

Information deemed reliable but not guaranteed.
Copyright © 2026 Garden State Multiple Listing Service, L.L.C. All rights reserved.

Notice: The dissemination of listings on this website does not constitute the consent required by N.J.A.C. 11:5.6.1 (n) for the advertisement of listings exclusively for sale by another broker. Any such consent must be obtained in writing from the listing broker.



This information is being provided for Consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties Consumers may be interested in purchasing.

Nearby Homes
Your Personal Tour Guide

Ask me questions while you tour the home.