New certificate of occupancy for reno?

Hi Blondelle,

In general, if you have an existing legal apartment in your building and you renovate it without changing the boundaries of the apartment, or the position of the exits, you can file and ALT-2 job and you will not need a new CO. If you are not changing the layout of such an apartment at all, you do not to file anything at all to change the finishes you describe. If you have a 1-family house and you want to create an apartment by renovating, then you would need to file an ALT-1 and apply for a new CO.

If you do have 2 separate apartments in your building, that does not mean they are legal. You must check on ny bis if you have a CO that properly describes the configuration of the building. If there is no CO because the building predates their use, then you can obtain something called a letter of no objection that allows you to continue the historical use of a building if you can demonstrate that it had that configuration before a certain date.

Urbandad