What's being built in Warren County, NJ: Q4 2025

6 development projects in Warren County, NJ had a new filing in Q4 2025 (October to December), up from 5 in Q3 and 7 in Q4 2024. Together they propose 1 new home and 32,007 sq ft of non-residential space, roughly $4.3M in estimated construction value. The most common project type was single-family homes, followed by industrial.

6projects filed

1new homes proposed

32,007sq ft non-residential

$4.3Mest. construction value

Biggest projects

Filed 2025-11-20

$3.9M est. value

30,000 sq ft|Industrial

Industrial building on State Route 94

Knowlton Township, Warren County, NJ

Filed 2025-11-26

$401K est. value

2,007 sq ft|Single-family homes

The Inn at Millrace Pond

Hope Township, Warren County, NJ

Filed 2025-12-29

1 home

1 home|Single-family homes

Block 1401, Lot 19 single-family home

Frelinghuysen Township, Warren County, NJ

By type

Type	Projects	Homes	Sq ft
Single-family homes	3	1	2,007
Industrial	1	0	30,000
Office	1	0	0
Mixed use	1	0	0

By town

Town	Projects	Homes
Hackettstown Town	2	0
Franklin Township	1	0
Frelinghuysen Township	1	1
Hope Township	1	0
Knowlton Township	1	0

Every project filed in Q4 2025

Received	Project	Town	Type	Homes	Sq ft
2025-12-29	Block 1401, Lot 19 single-family home	Frelinghuysen Township	Single-family homes	1
2025-12-09	Solar Landscape-Franklin Township	Franklin Township	Single-family homes
2025-11-26	The Inn at Millrace Pond	Hope Township	Single-family homes		2,007
2025-11-20	Industrial building on State Route 94	Knowlton Township	Industrial		30,000
2025-10-15	Advanced Cardiology, LLC	Hackettstown Town	Office
2025-10-02	Berkowitz Property Management	Hackettstown Town	Mixed use

← Q3 2025 · All Warren County reports · Q1 2026 →

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.