New Jersey installation guides.
New Jersey’s Uniform Construction Code is enforced by state-licensed municipal construction officials. A construction permit is needed for mechanical and other work on existing buildings, and the town must act on a complete application within 20 business days.
NJ DCA: The New Jersey State Uniform Construction Code (PDF)Choose your city.
Princeton
Mercer County / Central JerseyPrinceton’s adopted Historic Guidelines send removing, modifying or installing a chimney on a locally designated property to full Historic Preservation Commission review, while a chimney cap can be approved administratively.
Read the guideTrenton
Mercer County / Central JerseyTrenton’s code exempts interior work from historic review, but a visible change to a facade or roofline in its eight historic districts needs a certificate first.
Read the guide
We add guides as local research is completed. Rules and business coverage vary by address. Explore national planning guides for areas not yet covered.