Alteration or Renovation?

Alteration by the definition is a construction project, which upon its successful completion and final inspection, will always result in the issuance of a new Certificate of Occupancy (CO). Work that does not result in the issuance of a new Certificate of Occupancy is considered a renovation project. But NYC DOB has its own classification.

Types of alterations (how DOB classifies them)

Alteration Type – I –  This is described as a major change to the Certificate of Occupancy (CO). It could be a commercial to residential conversion or vice versa. Or an additional building or space…

Alteration Type – II – These are alterations that do not change the use or occupancy of the building but require several types of work – which could be plumbing or construction.   When this application is filed under directive 14 the applicant may sign off after Final Inspection has been completed.

Alteration Type – III – This is a minor alteration that involves minimal work such as the cutting of a curb or a construction fence. In some instances detailed plans are not required and these can be filed by a non-professional.