Most construction in New York City requires approval and permits from the Department of Buildings.
Work that does not require a permit is typically cosmetic, such as:
Owners considering performing work on their home should consult a licensed Professional Engineer or Registered Architect to assess whether a permit is required.
Check out the Department's Tool Kits
Before hiring a professional to work on your home, owners should make sure that the individual holds a valid license (if necessary).
Hiring a Professional