Concrete
- Sidewalks and Curbs
- ADA Curb Ramps
- Driveways
- Patios and Slabs
- Foundations and Footings

Mercer County is home to Trenton, the state capital, and to Hamilton, Ewing, Lawrence, Princeton and the Windsors. We build and repair sidewalks, curbs, ADA ramps, driveways, steps, masonry, patios and walls across the county. Trenton and Princeton both have historic districts with their own review rules.
The Mercer County Division of Engineering issues permits for work in county road rights-of-way: road openings, road construction permits for driveways and curbing, and right-of-way occupancy permits for sidewalks.
Mercer County permit packet (PDF)Checked on official county and municipal websites in October 2026. Rules change, so confirm before work starts. General information, not legal advice.
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