Certificate of Occupancy Complaint

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Housing Used for Short-Term Rental (Vacation Rentals or Illegal Home-Sharing)
Building Conversion or Occupancy Complaint for space changed from a legally approved use or occupancy, or a commercial space that is being used for other purposes
Certificate of Occupancy and Letter of No Objection to get a copy of a Certificate of Occupancy
Place of Assembly Complaint to report an establishment that does not have a Place of Assembly permit posted

You can report a building with no Certificate of Occupancy or an illegal one.

You can also report an illegal change in the use of the Certificate of Occupancy, such as:

An overcrowded apartment
Illegal rooftop occupancy
Commercial building units being used as residential apartments

A Certificate of Occupancy documents the legal use or occupancy of a building. Every building built after 1938 requires a Certificate of Occupancy.

Report a problem with a building's Certificate of Occupancy.

Unauthorized Certificate of Occupancy

A Certificate of Occupancy (CO) is used to certify the legal use and occupancy of a building. The Certificate describes how a building may be occupied.

An unauthorized/improper Certificate of Occupancy can include the following:

Not having the proper documentation for a CO
Not having a valid CO
Using the building contrary to the intended purpose as described on its CO

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