Code: NB (New building job type)
Description: NB (New Building) is the DOB job type used when you file plans to construct an entirely new building rather than alter an existing one. It is not used when any part of the existing building will remain, which normally requires an Alteration Type 1 or a related category instead.
Practical Meaning: If your project is filed as NB, DOB is treating it as new construction, so you are planning a new building instead of just changing an existing one. This usually means more complex plans, reviews, and inspections, and it can affect how much work you must budget for and how long approvals will take
Where You May See It: You may see NB on DOB job records in BIS or DOB NOW, on permit applications, on plan approval documents, and in emails from your architect or expediter about filing status. It is also used in guides and articles that explain NYC building permit application types.
Why It Matters: Filing your project as NB instead of an alteration can change the design requirements, reviews, and costs for the entire project, including how zoning, egress, and Certificates of Occupancy are handled. If you keep any part of the existing building but use the wrong filing type, you may face extra DOB questions, delays, or enforcement to correct the filing.
Source: More about NB job type