Development reports · Warren County, NJ
What's being built in Warren County, NJ: Q3 2025
5 development projects in Warren County, NJ had a new filing in Q3 2025 (July to September), down from 8 in Q2 and 10 in Q3 2024. Together they propose 280 new homes and 1,860 sq ft of non-residential space, roughly $67.5M in estimated construction value. The busiest towns were Hackettstown Town (2) and Washington Township (2). The most common project type was apartments, followed by single-family homes.
5projects filed
280new homes proposed
1,860sq ft non-residential
$67.5Mest. construction value
Biggest projects
Filed 2025-08-18
$66.0M est. value
275 homes|Apartments
Vermella Hackettstown
Hackettstown Town, Warren County, NJ
Filed 2025-08-08
$960K est. value
4 homes|Apartments
Ashley Avenue residential site plan
Hackettstown Town, Warren County, NJ
Filed 2025-07-30
$582K est. value
1,664 sq ft|Institutional
Washburn Avenue Fire Station Amended Minor Site
Washington Township, Warren County, NJ
Filed 2025-08-05
1 home
1 home|Single-family homes
Block 74, Lot 6
Washington Township, Warren County, NJ
Filed 2025-07-30
Single-family homes
196 sq ft|Single-family homes
The Carriage House
Mansfield Township, Warren County, NJ
By type
| Type | Projects | Homes | Sq ft |
|---|---|---|---|
| Apartments | 2 | 279 | 0 |
| Single-family homes | 2 | 1 | 196 |
| Institutional | 1 | 0 | 1,664 |
By town
| Town | Projects | Homes |
|---|---|---|
| Hackettstown Town | 2 | 279 |
| Washington Township | 2 | 1 |
| Mansfield Township | 1 | 0 |
Every project filed in Q3 2025
| Received | Project | Town | Type | Homes | Sq ft |
|---|---|---|---|---|---|
| 2025-08-18 | Vermella Hackettstown | Hackettstown Town | Apartments | 275 | |
| 2025-08-08 | Ashley Avenue residential site plan | Hackettstown Town | Apartments | 4 | |
| 2025-08-05 | Block 74, Lot 6 | Washington Township | Single-family homes | 1 | |
| 2025-07-30 | The Carriage House | Mansfield Township | Single-family homes | 196 | |
| 2025-07-30 | Washburn Avenue Fire Station Amended Minor Site | Washington Township | Institutional | 1,664 |
← Q2 2025 · All Warren County reports · Q4 2025 →
Counted by each project's latest filing date. Figures are the totals filed with the county and state, and construction values are rough estimates. See the Warren County page for every project since 2024.