Mercer County, New Jersey
Ewing Township is a township in Mercer County, New Jersey. Ewing Township adopts its own zoning, so inside its limits Ewing Township’s rules apply, not the county’s. 17 rules below are quoted from official sources and independently re-checked, most recently on October 12, 2026. Rules for unincorporated land are on the Mercer County page.
Land inside Ewing Township.
“No building shall hereafter be used, erected, altered, converted, enlarged, added to, moved or reduced [...] except in conformity with this chapter.”
Zoning districts and map inside Ewing Township.
number of zoning district classes: 15 classes
“For the purposes of this chapter, the Township is hereby subdivided into 15 classes of zoning districts.”
Principal buildings in the R-1 Residential District.
corner lot area: >= 22500 square feet · interior lot area: >= 18750 square feet
“Lot area, corner lot: 22,500 square feet, minimum. Lot area, interior lot: 18,750 square feet, minimum.”
“Lot area, corner lot: 12,100 square feet, minimum. Lot area, interior lot: 10,000 square feet, minimum.”
“Lot area, corner lot: 10,000 square feet, minimum. Lot area, interior lot: 7,500 square feet, minimum.”
Principal buildings in the R-1 Residential District.
front yard: >= 50 feet · each side yard: >= 20 feet · rear yard: >= 40 feet
“Front yard: 50 feet, minimum. Side yard, each: 20 feet, minimum. Rear yard: 40 feet, minimum.”
“Front yard: 40 feet, minimum. Side yard, each: 10 feet, minimum. Rear yard: 35 feet, minimum.”
“Front yard: 25 feet, minimum. Side yard, each: 10 feet, minimum. Rear yard: 25 feet, minimum.”
Principal buildings and total impervious coverage in the R-1 Residential District.
principal building coverage: 15 percent · total impervious coverage: 22 percent (May increase to 24% under stated stormwater conditions.)
“Principal building: 15%. Total impervious: 22%. Total impervious coverage may increase to 24%”
“Principal building: 18%. Total impervious: 26%. Total impervious coverage may increase to 28%”
“Principal building: 23%. Total impervious: 30%. Total impervious coverage may increase to 32%”
Principal buildings in the R-1 Residential District.
maximum stories: 2 1/2 stories · maximum height: <= 35 feet
“Height: 2 1/2 stories, not to exceed; 35 feet, maximum.”
“Height: 2 1/2 stories, not to exceed; 35 feet, maximum.”
“Height: 2 1/2 stories, not to exceed; 35 feet, maximum.”
Development governed by Ewing Township zoning provisions that require public utilities.
“All buildings and uses shall be served by public water and sewerage.”
Subdivision and site-plan development inside Ewing Township.
“§ 215-82 Submission of minor subdivision plats and minor site plans.”
Development applications inside Ewing Township.
“Article VIII Development Application Review Procedures”
We looked and could not find an official answer yet. Silence is not permission; ask Ewing Township or Mercer County directly.
Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.
Unanswered questions are usually a sign that Ewing Township publishes no rule on the point, not that none exists. Mercer County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Ewing Township means bringing your own water and power. The kit we’d start with:
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