Development reports · Mercer County, NJ
What's being built in Mercer County, NJ: Q1 2026
7 development projects in Mercer County, NJ had a new filing in Q1 2026 (January to March), up from 2 in Q4 2025 and 8 in Q1 2025. Together they propose 271,310 sq ft of non-residential space, roughly $35.6M in estimated construction value. The busiest towns were Hopewell Township (2) and Hamilton Township (2). The most common project type was apartments, followed by warehouse & storage.
7projects filed
0new homes proposed
271,310sq ft non-residential
$35.6Mest. construction value
Biggest projects
Filed 2026-01-05
$29.1M est. value
223,884 sq ft|Warehouse & storage
Storage building on Block 2596, Lot 5.01
Hamilton Township, Mercer County, NJ
Filed 2026-02-11
$5.5M est. value
42,357 sq ft|Warehouse & storage
Storage building, Robbinsville Township
Robbinsville Township, Mercer County, NJ
Filed 2026-03-11
$1.0M est. value
5,069 sq ft|Office
1030 State Highway 33 business building
Hamilton Township, Mercer County, NJ
By type
| Type | Projects | Homes | Sq ft |
|---|---|---|---|
| Apartments | 3 | 0 | 0 |
| Warehouse & storage | 2 | 0 | 266,241 |
| Office | 1 | 0 | 5,069 |
| Single-family homes | 1 | 0 | 0 |
By town
| Town | Projects | Homes |
|---|---|---|
| Hamilton Township | 2 | 0 |
| Hopewell Township | 2 | 0 |
| Ewing Township | 1 | 0 |
| Robbinsville Township | 1 | 0 |
| Trenton City | 1 | 0 |
Every project filed in Q1 2026
| Received | Project | Town | Type | Homes | Sq ft |
|---|---|---|---|---|---|
| 2026-03-24 | Samuel Sutphin Drive multifamily buildings | Hopewell Township | Apartments | ||
| 2026-03-13 | Multifamily building, Block 344 Lot 37.02 | Ewing Township | Apartments | ||
| 2026-03-11 | 1030 State Highway 33 business building | Hamilton Township | Office | 5,069 | |
| 2026-03-05 | 2500 Pennington Rd | Hopewell Township | Apartments | ||
| 2026-02-11 | Storage building, Robbinsville Township | Robbinsville Township | Warehouse & storage | 42,357 | |
| 2026-01-23 | 148 E State St | Trenton City | Single-family homes | ||
| 2026-01-05 | Storage building on Block 2596, Lot 5.01 | Hamilton Township | Warehouse & storage | 223,884 |
← Q3 2025 · All Mercer County reports · Q2 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 Mercer County page for every project since 2024.