Warren County and Hackettstown Town property records for 64 addresses on Mountain Ave, Hackettstown, NJ · Last verified August 2026
| Properties | 64 |
|---|---|
| Median Sale Price | $575,000 |
| Deeds and Mortgages on File | 47 |
| Median Price per Sqft | $183 |
| Owner Occupied | 11% |
| Median Annual Tax Bill | $22,827 |
| Median Year Built | 1900 |
| Median Ownership Tenure | 16 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
510 sqft · 0.599 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,780,471Apr 2026 | $25,2082025 | Amount on Record Jul 2016 | 2 Names on Record | Assessor + 1 DocumentUpdated Jul 2026 |
8,066 sqft · Built 1850 · 0.618 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $740,000Jul 2016 | $27,0892025 | Amount on Record Jan 1995 | 1 Name on Record | Assessor + 3 DocumentsUpdated Jul 2026 |
1,288 sqft · Built 1910 · 0.08 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $140,000May 2018 | $6,3182025 | 1 Name on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
3,016 sqft · Built 1870 · 0.299 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $325,000Oct 2008 | $11,3112025 | 1 Name on Record | AssessorUpdated Jul 2026 |
1,630 sqft · Built 1900 · 0.199 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $65,283Mar 2001 | $6,8672025 | —Mar 2001 | 1 Name on Record | AssessorUpdated Jul 2026 |
1,840 sqft · Built 1875 · 0.29 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $85,000May 1987 | $9,3082025 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
1,680 sqft · Built 1800 · 0.153 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $140,000Feb 2014 | $8,2652025 | Amount on Record Jan 2003 | 1 Name on Record | AssessorUpdated Jul 2026 |
1,680 sqft · Built 1880 · 0.148 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $150,000Feb 2021 | $6,9922025 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
1,241 sqft · Built 1800 · 0.153 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $55,000Dec 1999 | $5,8972025 | —Dec 1999 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
1,352 sqft · Built 1850 · 0.153 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $140,000Dec 2002 | $6,8292025 | —Dec 2002 | 1 Name on Record | AssessorUpdated Jul 2026 |
1,497 sqft · Built 1800 · 0.123 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $200,000Nov 2025 | $7,9102025 | Amount on Record Aug 2002 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
1,264 sqft · Built 1850 · 0.26 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $95,000May 2001 | $6,7592025 | —May 2001 | 1 Name on Record | AssessorUpdated Jul 2026 |
1,020 sqft · Built 1880 · 0.25 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $200,000Feb 2005 | $8,7032025 | Amount on Record Mar 2003 | 1 Name on Record | AssessorUpdated Jul 2026 |
2,080 sqft · Built 1900 · 0.332 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $296,000Oct 2003 | $9,5692025 | Amount on Record Oct 1997 | 1 Name on Record | AssessorUpdated Jul 2026 |
1,920 sqft · Built 1880 · 0.246 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $114,000Nov 1992 | $9,4992025 | 2 Names on Record Owner Occupied | AssessorUpdated Jul 2026 |
1,882 sqft · Built 1880 · 0.203 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $169,900Jun 2009 | $9,8892025 | —Dec 2008 | 1 Name on Record | AssessorUpdated Jul 2026 |
1,512 sqft · Built 1880 · 1.85 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $89,000Jul 1999 | $163,5722025 | 1 Name on Record | Assessor + 4 DocumentsUpdated Aug 2026 |
8,597 sqft · Built 1850 · 0.707 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $46,9402025 | 1 Name on Record | AssessorUpdated Jul 2026 |
11,100 sqft · Built 1986 · 1.31 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,000,000May 2022 | $52,4302025 | Amount on Record Feb 2015 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
3,168 sqft · Built 1990 · 0.598 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $575,000Feb 2022 | $22,6012025 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
5,274 sqft · Built 1946 · 0.9 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Jun 1998 | $25,2082025 | 1 Name on Record | AssessorUpdated Jul 2026 |
21,418 sqft · 1.21 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,050,000Nov 2001 | $57,6872025 | Amount on Record Jan 1998 | 1 Name on Record | AssessorUpdated Jul 2026 |
3.9 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 1 Name on Record | AssessorUpdated Jul 2026 |
1,818 sqft · Built 1973 · 0.26 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $333,000Jul 2024 | $7,7052025 | 2 Names on Record Owner Occupied | AssessorUpdated Jul 2026 |
1,028 sqft · Built 2005 · 0.795 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $315,000Jan 2010 | $22,8932025 | Amount on Record Dec 2000 | 1 Name on Record | AssessorUpdated Jul 2026 |
840 sqft · Built 1952 · 0.053 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $180,000Feb 2022 | $5,9282025 | Amount on Record May 2016 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
812 sqft · Built 1952 · 0.051 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $59,500Nov 2017 | $3,3452025 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
1,408 sqft · Built 1920 · 0.165 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $245,000Jan 2024 | $6,6062025 | Amount on Record Jan 2012 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
2,912 sqft · 0.245 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $400,000Apr 2014 | $14,5722025 | 1 Name on Record | AssessorUpdated Jul 2026 |
1,536 sqft · Built 1973 · 0.353 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $228,700Dec 1992 | $22,8272025 | 1 Name on Record | AssessorUpdated Jul 2026 |
2,043 sqft · 0.798 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $13,5712025 | 2 Names on Record | AssessorUpdated Jul 2026 |
0.288 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $50,000Nov 1996 | $8902025 | 2 Names on Record | AssessorUpdated Jul 2026 |
0.306 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $100,000Jun 1995 | $24,2282025 | —Sep 2005 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
1,980 sqft · Built 1850 · 0.139 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $335,000Jul 2007 | $10,3062025 | Amount on Record Aug 2000 | 1 Name on Record | AssessorUpdated Jul 2026 |
40,021 sqft · 3.4 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $984,857Jan 2013 | $194,7122025 | —Jan 2013 | 1 Name on Record | AssessorUpdated Jul 2026 |
1,814 sqft · Built 1860 · 0.094 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $375,000Sep 2024 | $8,9192025 | Amount on Record Sep 2023 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
0.506 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $50,000Dec 2003 | —Dec 2003 | 1 Name on Record | AssessorUpdated Jul 2026 |
11,108 sqft · Built 1873 · 1.98 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,140,000Sep 1999 | $45,2012025 | 1 Name on Record | AssessorUpdated Jul 2026 |
4,769 sqft · 0.487 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $35,0382025 | 1 Name on Record | AssessorUpdated Jul 2026 |
12,302 sqft · Built 1995 · 1.38 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,000,000Aug 2024 | $90,4052025 | Amount on Record May 2012 | 1 Name on Record | Assessor + 1 DocumentUpdated Aug 2026 |
4.21 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $23,9842025 | 1 Name on Record | AssessorUpdated Jul 2026 |
3,060 sqft · Built 1930 · 0.661 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $450,000Aug 2015 | $18,8982025 | Amount on Record Nov 2001 | 1 Name on Record | AssessorUpdated Jul 2026 |
4,300 sqft · Built 1910 · 0.516 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $390,000Jan 2000 | $24,9232025 | Amount on Record Jan 1996 | 1 Name on Record | AssessorUpdated Jul 2026 |
3,288 sqft · Built 1900 · 5.3 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 1 Name on Record Owner Occupied | AssessorUpdated Jul 2026 |
15,760 sqft · Built 1965 · 5.46 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $11,500,000Aug 2013 | $289,7382025 | Amount on Record Aug 2008 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
2,430 sqft · 0.468 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $27,5412025 | 1 Name on Record | AssessorUpdated Aug 2026 |
133,042 sqft · 23.2 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $11,171,231Aug 2003 | $806,9392025 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
660 sqft · 0.863 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $680,000Apr 1998 | $23,4702025 | 1 Name on Record | AssessorUpdated Jul 2026 |
4,102 sqft · 1.13 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $33,6922025 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
2,531 sqft · 0.459 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $952,558Jul 2010 | $33,4382025 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
4,872 sqft · 0.067 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $900,000Feb 2017 | $51,4872025 | Amount on Record Sep 1986 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
2,576 sqft · Built 1984 · 0.833 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,100,000May 2014 | $34,1062025 | Amount on Record Jul 2012 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
1,116 sqft · 0.3 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $179,900Oct 2008 | $4,3462025 | Amount on Record Aug 2004 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
5,585 sqft · Built 2018 · 1.81 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,800,000May 2019 | $137,3422025 | Amount on Record Apr 2018 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
4,016 sqft · 0.53 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $495,000Jun 2019 | $22,8542025 | Amount on Record Jul 2001 | 1 Name on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
13.9 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,200,000Jun 2008 | $126,0412025 | 1 Name on Record | Assessor + 4 DocumentsUpdated Jul 2026 |
3,188 sqft · Built 1980 · 0.788 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,135,000Sep 2022 | $36,8532025 | Amount on Record Oct 2021 | 1 Name on Record | Assessor + 3 DocumentsUpdated Jul 2026 |
2,542 sqft · 0.818 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $58,6192025 | 1 Name on Record | AssessorUpdated Jul 2026 |
5,084 sqft · Built 1955 · 0.652 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,300,000Nov 2024 | $19,4852025 | Amount on Record Dec 2016 | 1 Name on Record | Assessor + 3 DocumentsUpdated Jul 2026 |
1,867 sqft · 0.348 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $400,000Oct 2003 | $15,4142025 | 2 Names on Record | AssessorUpdated Jul 2026 |
17,475 sqft · 1.67 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $800,000Aug 2017 | $41,7242025 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
4,006 sqft · 0.528 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $19,2142025 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
1,594 sqft · 1.98 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $27,8922025 | 1 Name on Record | AssessorUpdated Jul 2026 |
3,584 sqft · 0.378 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $15,0482025 | 2 Names on Record | AssessorUpdated Jul 2026 |