Alteration Application

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Alteration Application

The legalization process begins with the filing of an alteration application, also known as a Plan/Work Approval Type-1 Application (PW1) with the New York City Department of Buildings (DOB). The application is a request for DOB to issue a permit authorizing the performance of certain construction work in the IMD building.

The application must be filed by a New York State licensed Professional Engineer (PE) or Registered Architect (RA) and requires the submission of building plans with certain forms. The plans and forms are submitted to DOB on behalf of the building owner. For detailed information on the application process, please refer to How to Obtain a Permit on DOB's website. 

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