Sussex County and Sparta Township property records for 45 addresses on Underrock Rd, Sparta, NJ · Last verified August 2026
| Properties | 45 |
|---|---|
| Median Sale Price | $723,000 |
| Deeds and Mortgages on File | 56 |
| Median Price per Sqft | $201 |
| Owner Occupied | 91% |
| Median Annual Tax Bill | $17,445 |
| Median Year Built | 1992 |
| Median Ownership Tenure | 8 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
1,416 sqft · built 1950 · 0.424 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Apr 1998 | $9,4162025 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
1,560 sqft · built 1978 · 0.557 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $415,000Nov 2024 | $9,0562025 | Amount on Record Mar 2013 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
1,722 sqft · built 1951 · 0.424 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $407,500Jun 2021 | $10,1792025 | Amount on Record Dec 2017 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
1,078 sqft · built 1958 · 0.459 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $8,6862025 | 2 Names on Record Owner Occupied | AssessorUpdated Jul 2026 |
1,863 sqft · built 1951 · 0.447 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $350,000Sep 2019 | $10,3512025 | Amount on Record Apr 2016 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
1,104 sqft · built 1956 · 0.459 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $160,000Jun 2012 | $9,2582025 | Amount on Record Nov 2010 | 2 Names on Record Owner Occupied | AssessorUpdated Jul 2026 |
1,530 sqft · built 1951 · 0.438 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $130,000Sep 1996 | $10,1382025 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
910 sqft · built 1953 · 0.459 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $289,000Aug 2019 | $7,6112025 | Amount on Record Mar 2006 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
1,740 sqft · built 1955 · 0.512 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $205,000Nov 2001 | $9,4052025 | 2 Names on Record Owner Occupied | AssessorUpdated Jul 2026 |
1,965 sqft · built 1960 · 0.585 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $168,000Aug 2001 | $11,3232025 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
1,188 sqft · built 1958 · 0.496 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $17,500Feb 1978 | $8,6422025 | 2 Names on Record | Assessor + 1 DocumentUpdated Jul 2026 |
1,848 sqft · built 1957 · 0.467 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $365,000Jul 2007 | $9,6292025 | Amount on Record Feb 2003 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
950 sqft · built 1952 · 0.554 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $7,3582025 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
1,344 sqft · built 1953 · 0.433 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $290,000Mar 2022 | $8,8442025 | Amount on Record Apr 1997 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
1,200 sqft · built 1962 · 0.457 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $57,000Oct 1978 | $9,1042025 | 2 Names on Record Owner Occupied | AssessorUpdated Jul 2026 |
2,018 sqft · built 1955 · 0.469 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $395,000Jun 2021 | $11,0662025 | Amount on Record Oct 2009 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
3,718 sqft · built 1992 · 1 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $440,000Jan 2009 | $17,5292025 | Amount on Record Feb 2008 | 1 Name on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
3,301 sqft · built 1995 · 1.43 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $319,900May 1995 | $16,9722025 | 2 Names on Record Owner Occupied | AssessorUpdated Jul 2026 |
4,126 sqft · built 1992 · 1.56 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $570,000Jun 2016 | $19,6272025 | Amount on Record Jun 2005 | 2 Names on Record Owner Occupied | AssessorUpdated Jul 2026 |
4,195 sqft · built 1993 · 1.01 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $600,000Oct 2020 | $18,5932025 | Amount on Record Jul 1999 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
3,919 sqft · built 1993 · 1.6 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $560,000Dec 2021 | $19,4662025 | Amount on Record Jul 2013 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
4,212 sqft · built 1993 · 1.61 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $525,000Jan 2020 | $19,8622025 | Amount on Record Jul 1999 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
3,668 sqft · built 1992 · 1.03 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $17,4452025 | 1 Name on Record Owner Occupied | AssessorUpdated Jul 2026 |
3,886 sqft · built 1993 · 2.85 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $660,000Aug 2021 | $17,6142025 | Amount on Record Oct 2008 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
3,902 sqft · built 1992 · 1.31 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $367,000Oct 1992 | $17,7572025 | 2 Names on Record Owner Occupied | AssessorUpdated Jul 2026 |
3,233 sqft · built 1993 · 1.91 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $740,000Sep 2021 | $16,2972025 | Amount on Record Aug 2003 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
4,360 sqft · built 1993 · 1.48 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $369,700Oct 1993 | $19,8002025 | 2 Names on Record Owner Occupied | AssessorUpdated Jul 2026 |
3,503 sqft · built 1992 · 1.76 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $875,000Aug 2026 | $16,2462025 | Amount on Record Sep 1994 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
6,948 sqft · built 2002 · 4.78 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,400,000Nov 2025 | $39,3362025 | Amount on Record May 2016 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
1,447 sqft · built 1950 · 0.447 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Feb 1989 | $9,3312025 | 2 Names on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
5,162 sqft · built 1992 · 1.2 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $20,4672025 | 1 Name on Record | AssessorUpdated Jul 2026 |
3,826 sqft · built 1992 · 1.03 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $775,000Mar 2021 | $19,3962025 | Amount on Record Jun 2018 | 2 Names on Record Owner Occupied | Assessor + 5 DocumentsUpdated Jul 2026 |
3,395 sqft · built 1992 · 1.03 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $820,000May 2006 | $17,8632025 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
3,823 sqft · built 1993 · 1.91 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $446,300Sep 1993 | $20,4862025 | 2 Names on Record Owner Occupied | AssessorUpdated Jul 2026 |
3,822 sqft · built 1991 · 1.01 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $18,5232025 | 1 Name on Record Owner Occupied | AssessorUpdated Jul 2026 |
3,054 sqft · built 1991 · 1.01 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $515,500Jan 2018 | $17,0202025 | Amount on Record Aug 2005 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
3,672 sqft · built 1991 · 1.01 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $480,000Jul 2002 | $17,4232025 | Amount on Record May 1997 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
4,024 sqft · built 1992 · 1.31 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $520,000Aug 2019 | $19,8002025 | —Jan 2018 | 1 Name on Record Owner Occupied | Assessor + 7 DocumentsUpdated Jul 2026 |
5,220 sqft · built 1991 · 1.13 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $770,000Oct 2025 | $23,8052025 | Amount on Record Sep 2003 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
4,274 sqft · built 1992 · 1.7 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $950,000Sep 2022 | $21,4832025 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
4,287 sqft · built 1990 · 1.66 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $480,000Aug 1990 | $20,8562025 | 2 Names on Record Owner Occupied | AssessorUpdated Jul 2026 |
4,364 sqft · built 1994 · 1.71 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $723,000Dec 2021 | $21,2082025 | Amount on Record Mar 2012 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
4,403 sqft · built 1993 · 2.18 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $720,000Aug 2013 | $21,6012025 | Amount on Record Sep 1994 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
6,211 sqft · built 1993 · 1.7 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,160,000Sep 2025 | $25,0782025 | Amount on Record Jan 2021 | 2 Names on Record Owner Occupied | Assessor + 4 DocumentsUpdated Jul 2026 |
3,728 sqft · built 1993 · 1.9 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $555,000Jun 2018 | $19,1582025 | Amount on Record Apr 1990 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
Source: USDA Forest Service Wildfire Risk to Communities · 2nd edition (2024), fuels as of 2020
| Wildfire Risk | Low this street's cells rank above 17% of the US · above 31% of New Jersey |
|---|---|
| Wildfire Likelihood | About 1 in 5,988 per year |
| Exposure | Direct 9 of 10 cells directly exposed · 10 adjoin burnable vegetation |