Warren County and Mansfield Township property records for 4 addresses on O Brien Rd, Hackettstown, NJ · Last verified August 2026
| Properties | 4 |
|---|---|
| Median Sale Price | $410,000 |
| Deeds and Mortgages on File | 10 |
| Median Price per Sqft | $34 |
| Owner Occupied | 75% |
| Median Annual Tax Bill | $10,832 |
| Median Year Built | 1956 |
| Median Ownership Tenure | 1 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
38.2 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,000,000Jul 2026 | 1 Name on Record Owner Occupied | Assessor + 3 DocumentsUpdated Aug 2026 |
1,114 sqft · Built 1954 · 1 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $10,000Apr 2025 | $16,4082025 | Amount on Record Oct 2022 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
2,060 sqft · Built 1956 · 3.38 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $410,000Jan 2021 | $10,3902025 | —Aug 2018 | 1 Name on Record Owner Occupied | Assessor + 4 DocumentsUpdated Jul 2026 |
1,620 sqft · Built 1994 · 4.03 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $56,500Jul 1994 | $10,8322025 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |